1
00:00:06,370 --> 00:00:20,230

satellite from now on McNair pilot Mike

2
00:00:20,230 --> 00:00:20,240
satellite from now on McNair pilot Mike
 

3
00:00:20,240 --> 00:00:22,150
satellite from now on McNair pilot Mike
Smith followed by Christa McAuliffe

4
00:00:22,150 --> 00:00:22,160
Smith followed by Christa McAuliffe
 

5
00:00:22,160 --> 00:00:23,580
Smith followed by Christa McAuliffe
featuring faith

6
00:00:23,580 --> 00:00:23,590
featuring faith
 

7
00:00:23,590 --> 00:00:26,560
featuring faith
Ellison Onizuka and payload specialist

8
00:00:26,560 --> 00:00:26,570
Ellison Onizuka and payload specialist
 

9
00:00:26,570 --> 00:00:32,170
Ellison Onizuka and payload specialist
Greg Jarvis big smiles today confidently

10
00:00:32,170 --> 00:00:32,180
Greg Jarvis big smiles today confidently
 

11
00:00:32,180 --> 00:00:35,079
Greg Jarvis big smiles today confidently
getting into the van we're going to go

12
00:00:35,079 --> 00:00:35,089
getting into the van we're going to go
 

13
00:00:35,089 --> 00:00:38,369
getting into the van we're going to go
to that pad and attempt a second try

14
00:00:38,369 --> 00:00:38,379
to that pad and attempt a second try
 

15
00:00:38,379 --> 00:00:41,819
to that pad and attempt a second try
second loss second try at launch today

16
00:00:41,819 --> 00:00:41,829
second loss second try at launch today
 

17
00:00:41,829 --> 00:00:44,110
second loss second try at launch today
it will take a few minutes for the

18
00:00:44,110 --> 00:00:44,120
it will take a few minutes for the
 

19
00:00:44,120 --> 00:00:50,310
it will take a few minutes for the
astronaut van to get to the pad

20
00:00:50,310 --> 00:00:50,320

 

21
00:00:50,320 --> 00:00:54,490

the orbiter and the first crew member

22
00:00:54,490 --> 00:00:54,500
the orbiter and the first crew member
 

23
00:00:54,500 --> 00:00:57,279
the orbiter and the first crew member
commander dick Scobee now in the white

24
00:00:57,279 --> 00:00:57,289
commander dick Scobee now in the white
 

25
00:00:57,289 --> 00:01:01,180
commander dick Scobee now in the white
room taking off his jacket along with

26
00:01:01,180 --> 00:01:01,190
room taking off his jacket along with
 

27
00:01:01,190 --> 00:01:09,070
room taking off his jacket along with
Mike Smith who is the the pilot dick

28
00:01:09,070 --> 00:01:09,080
Mike Smith who is the the pilot dick
 

29
00:01:09,080 --> 00:01:13,960
Mike Smith who is the the pilot dick
Scobee became a military pilot and later

30
00:01:13,960 --> 00:01:13,970
Scobee became a military pilot and later
 

31
00:01:13,970 --> 00:01:18,160
Scobee became a military pilot and later
a test pilot the hard way the he

32
00:01:18,160 --> 00:01:18,170
a test pilot the hard way the he
 

33
00:01:18,170 --> 00:01:21,070
a test pilot the hard way the he
enlisted in the Air Force in 1957 and

34
00:01:21,070 --> 00:01:21,080
enlisted in the Air Force in 1957 and
 

35
00:01:21,080 --> 00:01:23,649
enlisted in the Air Force in 1957 and
was trained as a reciprocating engine

36
00:01:23,649 --> 00:01:23,659
was trained as a reciprocating engine
 

37
00:01:23,659 --> 00:01:27,070
was trained as a reciprocating engine
mechanic however he went to night school

38
00:01:27,070 --> 00:01:27,080
mechanic however he went to night school
 

39
00:01:27,080 --> 00:01:32,529
mechanic however he went to night school
during the time he was down at Kelly Air

40
00:01:32,529 --> 00:01:32,539
during the time he was down at Kelly Air
 

41
00:01:32,539 --> 00:01:35,290
during the time he was down at Kelly Air
Force Base and earned two years of

42
00:01:35,290 --> 00:01:35,300
Force Base and earned two years of
 

43
00:01:35,300 --> 00:01:37,570
Force Base and earned two years of
college credit which helped lead to his

44
00:01:37,570 --> 00:01:37,580
college credit which helped lead to his
 

45
00:01:37,580 --> 00:01:40,419
college credit which helped lead to his
selection as for the Airman's education

46
00:01:40,419 --> 00:01:40,429
selection as for the Airman's education
 

47
00:01:40,429 --> 00:01:43,029
selection as for the Airman's education
and commissioning program he graduated

48
00:01:43,029 --> 00:01:43,039
and commissioning program he graduated
 

49
00:01:43,039 --> 00:01:45,340
and commissioning program he graduated
from the University of Arizona with a

50
00:01:45,340 --> 00:01:45,350
from the University of Arizona with a
 

51
00:01:45,350 --> 00:01:47,949
from the University of Arizona with a
degree in aerospace engineering received

52
00:01:47,949 --> 00:01:47,959
degree in aerospace engineering received
 

53
00:01:47,959 --> 00:01:51,180
degree in aerospace engineering received
his commission in 1965 and his wings in

54
00:01:51,180 --> 00:01:51,190
his commission in 1965 and his wings in
 

55
00:01:51,190 --> 00:01:54,700
his commission in 1965 and his wings in
1966 eyes completed a number of

56
00:01:54,700 --> 00:01:54,710
1966 eyes completed a number of
 

57
00:01:54,710 --> 00:01:57,910
1966 eyes completed a number of
assignments for the Air Force including

58
00:01:57,910 --> 00:01:57,920
assignments for the Air Force including
 

59
00:01:57,920 --> 00:02:02,649
assignments for the Air Force including
becoming an Air Force test pilot he was

60
00:02:02,649 --> 00:02:02,659
becoming an Air Force test pilot he was
 

61
00:02:02,659 --> 00:02:06,069
becoming an Air Force test pilot he was
the pilot of the 41 C mission which

62
00:02:06,069 --> 00:02:06,079
the pilot of the 41 C mission which
 

63
00:02:06,079 --> 00:02:08,169
the pilot of the 41 C mission which
deployed the long-duration exposure

64
00:02:08,169 --> 00:02:08,179
deployed the long-duration exposure
 

65
00:02:08,179 --> 00:02:10,630
deployed the long-duration exposure
facility which is still in orbit and

66
00:02:10,630 --> 00:02:10,640
facility which is still in orbit and
 

67
00:02:10,640 --> 00:02:12,970
facility which is still in orbit and
captured and repaired the solar maximum

68
00:02:12,970 --> 00:02:12,980
captured and repaired the solar maximum
 

69
00:02:12,980 --> 00:02:15,970
captured and repaired the solar maximum
mission satellite and placed it in orbit

70
00:02:15,970 --> 00:02:15,980
mission satellite and placed it in orbit
 

71
00:02:15,980 --> 00:02:18,569
mission satellite and placed it in orbit
where it is functioning better than ever

72
00:02:18,569 --> 00:02:18,579
where it is functioning better than ever
 

73
00:02:18,579 --> 00:02:22,180
where it is functioning better than ever
Mike Smith putting on his egress harness

74
00:02:22,180 --> 00:02:22,190
Mike Smith putting on his egress harness
 

75
00:02:22,190 --> 00:02:24,759
Mike Smith putting on his egress harness
to they're going to be going very fast

76
00:02:24,759 --> 00:02:24,769
to they're going to be going very fast
 

77
00:02:24,769 --> 00:02:27,370
to they're going to be going very fast
two days to get out of the cold and into

78
00:02:27,370 --> 00:02:27,380
two days to get out of the cold and into
 

79
00:02:27,380 --> 00:02:30,759
two days to get out of the cold and into
the cabin he was one of the Mike Smith

80
00:02:30,759 --> 00:02:30,769
the cabin he was one of the Mike Smith
 

81
00:02:30,769 --> 00:02:32,650
the cabin he was one of the Mike Smith
is one of the few rookies on board this

82
00:02:32,650 --> 00:02:32,660
is one of the few rookies on board this
 

83
00:02:32,660 --> 00:02:34,870
is one of the few rookies on board this
flight he's a graduate of the US Naval

84
00:02:34,870 --> 00:02:34,880
flight he's a graduate of the US Naval
 

85
00:02:34,880 --> 00:02:37,360
flight he's a graduate of the US Naval
Academy in Annapolis and received his

86
00:02:37,360 --> 00:02:37,370
Academy in Annapolis and received his
 

87
00:02:37,370 --> 00:02:41,410
Academy in Annapolis and received his
naval aviator wings in 1969 he had a

88
00:02:41,410 --> 00:02:41,420
naval aviator wings in 1969 he had a
 

89
00:02:41,420 --> 00:02:45,009
naval aviator wings in 1969 he had a
two-year tour of duty in Vietnam and as

90
00:02:45,009 --> 00:02:45,019
two-year tour of duty in Vietnam and as
 

91
00:02:45,019 --> 00:02:46,780
two-year tour of duty in Vietnam and as
a graduate of the Navy test pilot school

92
00:02:46,780 --> 00:02:46,790
a graduate of the Navy test pilot school
 

93
00:02:46,790 --> 00:02:49,420
a graduate of the Navy test pilot school
where he also served as an instructor

94
00:02:49,420 --> 00:02:49,430
where he also served as an instructor
 

95
00:02:49,430 --> 00:02:51,750
where he also served as an instructor
for 18 months

96
00:02:51,750 --> 00:02:51,760
for 18 months
 

97
00:02:51,760 --> 00:02:54,729
for 18 months
altogether he's flown about 28 different

98
00:02:54,729 --> 00:02:54,739
altogether he's flown about 28 different
 

99
00:02:54,739 --> 00:02:57,300
altogether he's flown about 28 different
types of civilian and military aircraft

100
00:02:57,300 --> 00:02:57,310
types of civilian and military aircraft
 

101
00:02:57,310 --> 00:03:02,000
types of civilian and military aircraft
logging over 43 hundred hours

102
00:03:02,000 --> 00:03:02,010
logging over 43 hundred hours
 

103
00:03:02,010 --> 00:03:05,250
logging over 43 hundred hours
he's taken on a number of tasks while

104
00:03:05,250 --> 00:03:05,260
he's taken on a number of tasks while
 

105
00:03:05,260 --> 00:03:08,040
he's taken on a number of tasks while
he's been in the astronaut corps he

106
00:03:08,040 --> 00:03:08,050
he's been in the astronaut corps he
 

107
00:03:08,050 --> 00:03:10,110
he's been in the astronaut corps he
served as commander in the shuttle

108
00:03:10,110 --> 00:03:10,120
served as commander in the shuttle
 

109
00:03:10,120 --> 00:03:12,450
served as commander in the shuttle
avionics integration laboratory in

110
00:03:12,450 --> 00:03:12,460
avionics integration laboratory in
 

111
00:03:12,460 --> 00:03:14,640
avionics integration laboratory in
Houston which tests all of the

112
00:03:14,640 --> 00:03:14,650
Houston which tests all of the
 

113
00:03:14,650 --> 00:03:16,470
Houston which tests all of the
instrumentation and computers and

114
00:03:16,470 --> 00:03:16,480
instrumentation and computers and
 

115
00:03:16,480 --> 00:03:19,110
instrumentation and computers and
software for the shuttle he also was

116
00:03:19,110 --> 00:03:19,120
software for the shuttle he also was
 

117
00:03:19,120 --> 00:03:21,560
software for the shuttle he also was
deputy chief of aircraft operations and

118
00:03:21,560 --> 00:03:21,570
deputy chief of aircraft operations and
 

119
00:03:21,570 --> 00:03:24,090
deputy chief of aircraft operations and
technical assistant to the director of

120
00:03:24,090 --> 00:03:24,100
technical assistant to the director of
 

121
00:03:24,100 --> 00:03:27,330
technical assistant to the director of
flight operations George Abby he also

122
00:03:27,330 --> 00:03:27,340
flight operations George Abby he also
 

123
00:03:27,340 --> 00:03:29,100
flight operations George Abby he also
served in the astronaut office

124
00:03:29,100 --> 00:03:29,110
served in the astronaut office
 

125
00:03:29,110 --> 00:03:35,970
served in the astronaut office
development and test group after the

126
00:03:35,970 --> 00:03:35,980
development and test group after the
 

127
00:03:35,980 --> 00:03:39,270
development and test group after the
scrub yesterday the crew went back to

128
00:03:39,270 --> 00:03:39,280
scrub yesterday the crew went back to
 

129
00:03:39,280 --> 00:03:42,150
scrub yesterday the crew went back to
the crew quarters where they relaxed for

130
00:03:42,150 --> 00:03:42,160
the crew quarters where they relaxed for
 

131
00:03:42,160 --> 00:03:44,010
the crew quarters where they relaxed for
a while and were able to have dinner

132
00:03:44,010 --> 00:03:44,020
a while and were able to have dinner
 

133
00:03:44,020 --> 00:03:47,940
a while and were able to have dinner
with their spouses in the crew quarters

134
00:03:47,940 --> 00:03:47,950
with their spouses in the crew quarters
 

135
00:03:47,950 --> 00:03:51,900
with their spouses in the crew quarters
dining room but they had to be in bed by

136
00:03:51,900 --> 00:03:51,910
dining room but they had to be in bed by
 

137
00:03:51,910 --> 00:03:54,840
dining room but they had to be in bed by
about 7 o'clock so they could be up and

138
00:03:54,840 --> 00:03:54,850
about 7 o'clock so they could be up and
 

139
00:03:54,850 --> 00:04:00,510
about 7 o'clock so they could be up and
on their way this morning Mike Smith

140
00:04:00,510 --> 00:04:00,520
on their way this morning Mike Smith
 

141
00:04:00,520 --> 00:04:02,430
on their way this morning Mike Smith
shaking hands with the closeout crew

142
00:04:02,430 --> 00:04:02,440
shaking hands with the closeout crew
 

143
00:04:02,440 --> 00:04:04,920
shaking hands with the closeout crew
which has assisted him in in getting

144
00:04:04,920 --> 00:04:04,930
which has assisted him in in getting
 

145
00:04:04,930 --> 00:04:10,140
which has assisted him in in getting
ready they take a look at his feet and

146
00:04:10,140 --> 00:04:10,150
ready they take a look at his feet and
 

147
00:04:10,150 --> 00:04:11,850
ready they take a look at his feet and
then wipe those out to make sure he's

148
00:04:11,850 --> 00:04:11,860
then wipe those out to make sure he's
 

149
00:04:11,860 --> 00:04:14,910
then wipe those out to make sure he's
not carrying any debris into the cabin

150
00:04:14,910 --> 00:04:14,920
not carrying any debris into the cabin
 

151
00:04:14,920 --> 00:04:28,980
not carrying any debris into the cabin
with him

152
00:04:28,980 --> 00:04:28,990

 

153
00:04:28,990 --> 00:04:31,500

this is shuttle launch control at one

154
00:04:31,500 --> 00:04:31,510
this is shuttle launch control at one
 

155
00:04:31,510 --> 00:04:34,770
this is shuttle launch control at one
hour 58 minutes 57 seconds in counting

156
00:04:34,770 --> 00:04:34,780
hour 58 minutes 57 seconds in counting
 

157
00:04:34,780 --> 00:04:39,150
hour 58 minutes 57 seconds in counting
and dr. Judy Resnik who was mission

158
00:04:39,150 --> 00:04:39,160
and dr. Judy Resnik who was mission
 

159
00:04:39,160 --> 00:04:41,880
and dr. Judy Resnik who was mission
specialist for the st 41 D mission on

160
00:04:41,880 --> 00:04:41,890
specialist for the st 41 D mission on
 

161
00:04:41,890 --> 00:04:44,220
specialist for the st 41 D mission on
her first flight is in the white room

162
00:04:44,220 --> 00:04:44,230
her first flight is in the white room
 

163
00:04:44,230 --> 00:04:46,350
her first flight is in the white room
now preparing to put on her egress

164
00:04:46,350 --> 00:04:46,360
now preparing to put on her egress
 

165
00:04:46,360 --> 00:04:48,750
now preparing to put on her egress
harness and get ready for her entrance

166
00:04:48,750 --> 00:04:48,760
harness and get ready for her entrance
 

167
00:04:48,760 --> 00:04:52,920
harness and get ready for her entrance
into the orbiter on her first flight

168
00:04:52,920 --> 00:04:52,930
into the orbiter on her first flight
 

169
00:04:52,930 --> 00:04:56,430
into the orbiter on her first flight
three satellites were deployed and she

170
00:04:56,430 --> 00:04:56,440
three satellites were deployed and she
 

171
00:04:56,440 --> 00:05:00,240
three satellites were deployed and she
was responsible for operating the remote

172
00:05:00,240 --> 00:05:00,250
was responsible for operating the remote
 

173
00:05:00,250 --> 00:05:02,550
was responsible for operating the remote
manipulator arm on that particular

174
00:05:02,550 --> 00:05:02,560
manipulator arm on that particular
 

175
00:05:02,560 --> 00:05:04,980
manipulator arm on that particular
flight she's also responsible for

176
00:05:04,980 --> 00:05:04,990
flight she's also responsible for
 

177
00:05:04,990 --> 00:05:07,410
flight she's also responsible for
operating the arm for placing the

178
00:05:07,410 --> 00:05:07,420
operating the arm for placing the
 

179
00:05:07,420 --> 00:05:09,870
operating the arm for placing the
Spartan Halley's spacecraft in orbit and

180
00:05:09,870 --> 00:05:09,880
Spartan Halley's spacecraft in orbit and
 

181
00:05:09,880 --> 00:05:12,480
Spartan Halley's spacecraft in orbit and
then recovering it later in flight that

182
00:05:12,480 --> 00:05:12,490
then recovering it later in flight that
 

183
00:05:12,490 --> 00:05:16,110
then recovering it later in flight that
will be put in orbit over the side of on

184
00:05:16,110 --> 00:05:16,120
will be put in orbit over the side of on
 

185
00:05:16,120 --> 00:05:18,390
will be put in orbit over the side of on
the second day the orbiter will move

186
00:05:18,390 --> 00:05:18,400
the second day the orbiter will move
 

187
00:05:18,400 --> 00:05:20,940
the second day the orbiter will move
about five miles away and allow it to

188
00:05:20,940 --> 00:05:20,950
about five miles away and allow it to
 

189
00:05:20,950 --> 00:05:24,240
about five miles away and allow it to
function and look at Halley's Comet for

190
00:05:24,240 --> 00:05:24,250
function and look at Halley's Comet for
 

191
00:05:24,250 --> 00:05:27,150
function and look at Halley's Comet for
40 hours and then go back and pick it up

192
00:05:27,150 --> 00:05:27,160
40 hours and then go back and pick it up
 

193
00:05:27,160 --> 00:05:29,970
40 hours and then go back and pick it up
and bring it back to earth her

194
00:05:29,970 --> 00:05:29,980
and bring it back to earth her
 

195
00:05:29,980 --> 00:05:32,610
and bring it back to earth her
undergraduate degree was from Carnegie

196
00:05:32,610 --> 00:05:32,620
undergraduate degree was from Carnegie
 

197
00:05:32,620 --> 00:05:35,670
undergraduate degree was from Carnegie
Mellon University and she earned her PhD

198
00:05:35,670 --> 00:05:35,680
Mellon University and she earned her PhD
 

199
00:05:35,680 --> 00:05:38,130
Mellon University and she earned her PhD
in electrical engineering from the

200
00:05:38,130 --> 00:05:38,140
in electrical engineering from the
 

201
00:05:38,140 --> 00:05:42,680
in electrical engineering from the
University of Maryland

202
00:05:42,680 --> 00:05:42,690

 

203
00:05:42,690 --> 00:05:46,830

prior to joining NASA in 1978 as a

204
00:05:46,830 --> 00:05:46,840
prior to joining NASA in 1978 as a
 

205
00:05:46,840 --> 00:05:49,830
prior to joining NASA in 1978 as a
mission specialist Judy Resnik worked as

206
00:05:49,830 --> 00:05:49,840
mission specialist Judy Resnik worked as
 

207
00:05:49,840 --> 00:05:51,810
mission specialist Judy Resnik worked as
a senior systems engineer in product

208
00:05:51,810 --> 00:05:51,820
a senior systems engineer in product
 

209
00:05:51,820 --> 00:05:54,240
a senior systems engineer in product
development for the Xerox Corporation in

210
00:05:54,240 --> 00:05:54,250
development for the Xerox Corporation in
 

211
00:05:54,250 --> 00:05:57,680
development for the Xerox Corporation in
California she's a native of Akron Ohio

212
00:05:57,680 --> 00:05:57,690
California she's a native of Akron Ohio
 

213
00:05:57,690 --> 00:06:00,870
California she's a native of Akron Ohio
and also a classical pianist and enjoys

214
00:06:00,870 --> 00:06:00,880
and also a classical pianist and enjoys
 

215
00:06:00,880 --> 00:06:03,770
and also a classical pianist and enjoys
flying and bicycling in their spare time

216
00:06:03,770 --> 00:06:03,780
flying and bicycling in their spare time
 

217
00:06:03,780 --> 00:06:07,290
flying and bicycling in their spare time
Ellison Onizuka also in the white room

218
00:06:07,290 --> 00:06:07,300
Ellison Onizuka also in the white room
 

219
00:06:07,300 --> 00:06:09,150
Ellison Onizuka also in the white room
actually everybody is going to be in

220
00:06:09,150 --> 00:06:09,160
actually everybody is going to be in
 

221
00:06:09,160 --> 00:06:14,450
actually everybody is going to be in
there shortly as they get ready the

222
00:06:14,450 --> 00:06:14,460
there shortly as they get ready the
 

223
00:06:14,460 --> 00:06:19,020
there shortly as they get ready the
teacher observer of Christa McAuliffe

224
00:06:19,020 --> 00:06:19,030
teacher observer of Christa McAuliffe
 

225
00:06:19,030 --> 00:06:22,800
teacher observer of Christa McAuliffe
has been handed an apple by the closeout

226
00:06:22,800 --> 00:06:22,810
has been handed an apple by the closeout
 

227
00:06:22,810 --> 00:06:27,510
has been handed an apple by the closeout
crew Ellison Onizuka Nell getting his

228
00:06:27,510 --> 00:06:27,520
crew Ellison Onizuka Nell getting his
 

229
00:06:27,520 --> 00:06:30,300
crew Ellison Onizuka Nell getting his
egress harness on

230
00:06:30,300 --> 00:06:30,310
egress harness on
 

231
00:06:30,310 --> 00:06:33,840
egress harness on
the native of Hawaii is a graduate of

232
00:06:33,840 --> 00:06:33,850
the native of Hawaii is a graduate of
 

233
00:06:33,850 --> 00:06:37,020
the native of Hawaii is a graduate of
our Konawaena high school and earn both

234
00:06:37,020 --> 00:06:37,030
our Konawaena high school and earn both
 

235
00:06:37,030 --> 00:06:39,060
our Konawaena high school and earn both
a bachelor and Master of Science degree

236
00:06:39,060 --> 00:06:39,070
a bachelor and Master of Science degree
 

237
00:06:39,070 --> 00:06:41,129
a bachelor and Master of Science degree
in aerospace engineering from the

238
00:06:41,129 --> 00:06:41,139
in aerospace engineering from the
 

239
00:06:41,139 --> 00:06:44,670
in aerospace engineering from the
versity of colorado after receiving his

240
00:06:44,670 --> 00:06:44,680
versity of colorado after receiving his
 

241
00:06:44,680 --> 00:06:46,619
versity of colorado after receiving his
commission in the Air Force he served as

242
00:06:46,619 --> 00:06:46,629
commission in the Air Force he served as
 

243
00:06:46,629 --> 00:06:49,529
commission in the Air Force he served as
a flight test engineer and participated

244
00:06:49,529 --> 00:06:49,539
a flight test engineer and participated
 

245
00:06:49,539 --> 00:06:52,679
a flight test engineer and participated
in the flight programs and system safety

246
00:06:52,679 --> 00:06:52,689
in the flight programs and system safety
 

247
00:06:52,689 --> 00:06:55,110
in the flight programs and system safety
engineering for a wide variety of

248
00:06:55,110 --> 00:06:55,120
engineering for a wide variety of
 

249
00:06:55,120 --> 00:06:58,260
engineering for a wide variety of
aircraft he graduated from the Air Force

250
00:06:58,260 --> 00:06:58,270
aircraft he graduated from the Air Force
 

251
00:06:58,270 --> 00:07:00,689
aircraft he graduated from the Air Force
test pilot school and then served on the

252
00:07:00,689 --> 00:07:00,699
test pilot school and then served on the
 

253
00:07:00,699 --> 00:07:04,050
test pilot school and then served on the
staff on azúcar is one of the astronauts

254
00:07:04,050 --> 00:07:04,060
staff on azúcar is one of the astronauts
 

255
00:07:04,060 --> 00:07:06,239
staff on azúcar is one of the astronauts
known as the Cape Crusaders who were

256
00:07:06,239 --> 00:07:06,249
known as the Cape Crusaders who were
 

257
00:07:06,249 --> 00:07:09,390
known as the Cape Crusaders who were
assigned to KSC for a period of time of

258
00:07:09,390 --> 00:07:09,400
assigned to KSC for a period of time of
 

259
00:07:09,400 --> 00:07:11,939
assigned to KSC for a period of time of
several launches and work with the

260
00:07:11,939 --> 00:07:11,949
several launches and work with the
 

261
00:07:11,949 --> 00:07:14,100
several launches and work with the
orbiter test and check-out teams and the

262
00:07:14,100 --> 00:07:14,110
orbiter test and check-out teams and the
 

263
00:07:14,110 --> 00:07:18,300
orbiter test and check-out teams and the
launch support crews the astronaut

264
00:07:18,300 --> 00:07:18,310
launch support crews the astronaut
 

265
00:07:18,310 --> 00:07:22,230
launch support crews the astronaut
support person on board are Sonny Billy

266
00:07:22,230 --> 00:07:22,240
support person on board are Sonny Billy
 

267
00:07:22,240 --> 00:07:25,230
support person on board are Sonny Billy
Bob Carter is also one of the Cape

268
00:07:25,230 --> 00:07:25,240
Bob Carter is also one of the Cape
 

269
00:07:25,240 --> 00:07:49,720
Bob Carter is also one of the Cape
Crusaders at the present time

270
00:07:49,720 --> 00:07:49,730

 

271
00:07:49,730 --> 00:07:53,440

right up here

272
00:07:53,440 --> 00:07:53,450

 

273
00:07:53,450 --> 00:08:17,720

go ahead up here

274
00:08:17,720 --> 00:08:17,730

 

275
00:08:17,730 --> 00:08:22,830

Buhler curricula to a social position

276
00:08:22,830 --> 00:08:22,840
Buhler curricula to a social position
 

277
00:08:22,840 --> 00:08:55,949
Buhler curricula to a social position
complete specific for five for five

278
00:08:55,949 --> 00:08:55,959

 

279
00:08:55,959 --> 00:09:41,060

okay terrific

280
00:09:41,060 --> 00:09:41,070

 

281
00:09:41,070 --> 00:09:45,860

I'll be Sufi LCCC okay apparently one of

282
00:09:45,860 --> 00:09:45,870
I'll be Sufi LCCC okay apparently one of
 

283
00:09:45,870 --> 00:09:47,870
I'll be Sufi LCCC okay apparently one of
the crew left their gloves in the

284
00:09:47,870 --> 00:09:47,880
the crew left their gloves in the
 

285
00:09:47,880 --> 00:09:48,439
the crew left their gloves in the
astro-man

286
00:09:48,439 --> 00:09:48,449
astro-man
 

287
00:09:48,449 --> 00:09:52,220
astro-man
now between the orbiter the firing room

288
00:09:52,220 --> 00:09:52,230
now between the orbiter the firing room
 

289
00:09:52,230 --> 00:09:56,590
now between the orbiter the firing room
here at Kennedy Space Center in Houston

290
00:09:56,590 --> 00:09:56,600
here at Kennedy Space Center in Houston
 

291
00:09:56,600 --> 00:10:00,639
here at Kennedy Space Center in Houston
the booster engine gimbal now underway

292
00:10:00,639 --> 00:10:00,649
the booster engine gimbal now underway
 

293
00:10:00,649 --> 00:10:11,269
the booster engine gimbal now underway
t-minus 15 seconds t-minus 10 9 8 7 6 we

294
00:10:11,269 --> 00:10:11,279
t-minus 15 seconds t-minus 10 9 8 7 6 we
 

295
00:10:11,279 --> 00:10:15,019
t-minus 15 seconds t-minus 10 9 8 7 6 we
have main engine start four three two

296
00:10:15,019 --> 00:10:15,029
have main engine start four three two
 

297
00:10:15,029 --> 00:10:20,150
have main engine start four three two
one and liftoff liftoff of the 25th

298
00:10:20,150 --> 00:10:20,160
one and liftoff liftoff of the 25th
 

299
00:10:20,160 --> 00:10:22,249
one and liftoff liftoff of the 25th
space shuttle mission and it has cleared

300
00:10:22,249 --> 00:10:22,259
space shuttle mission and it has cleared
 

301
00:10:22,259 --> 00:10:31,180
space shuttle mission and it has cleared
the tower

302
00:10:31,180 --> 00:10:31,190

 

303
00:10:31,190 --> 00:10:35,180

good roll program confirmed challenger

304
00:10:35,180 --> 00:10:35,190
good roll program confirmed challenger
 

305
00:10:35,190 --> 00:10:44,280
good roll program confirmed challenger
now heading down range

306
00:10:44,280 --> 00:10:44,290

 

307
00:10:44,290 --> 00:10:47,320

engines beginning throttling down now at

308
00:10:47,320 --> 00:10:47,330
engines beginning throttling down now at
 

309
00:10:47,330 --> 00:10:50,950
engines beginning throttling down now at
94% normal titles for most of the flight

310
00:10:50,950 --> 00:10:50,960
94% normal titles for most of the flight
 

311
00:10:50,960 --> 00:10:56,400
94% normal titles for most of the flight
104 percent will travel down to 65%

312
00:10:56,400 --> 00:10:56,410
104 percent will travel down to 65%
 

313
00:10:56,410 --> 00:11:03,190
104 percent will travel down to 65%
shortly engines at 65% three engines

314
00:11:03,190 --> 00:11:03,200
shortly engines at 65% three engines
 

315
00:11:03,200 --> 00:11:05,110
shortly engines at 65% three engines
running normally karika fuel cells

316
00:11:05,110 --> 00:11:05,120
running normally karika fuel cells
 

317
00:11:05,120 --> 00:11:11,560
running normally karika fuel cells
triggered ap use velocity 2257 feet per

318
00:11:11,560 --> 00:11:11,570
triggered ap use velocity 2257 feet per
 

319
00:11:11,570 --> 00:11:13,720
triggered ap use velocity 2257 feet per
second altitude 4.3 nautical miles

320
00:11:13,720 --> 00:11:13,730
second altitude 4.3 nautical miles
 

321
00:11:13,730 --> 00:11:20,220
second altitude 4.3 nautical miles
downrange distance 3 nautical miles

322
00:11:20,220 --> 00:11:20,230

 

323
00:11:20,230 --> 00:11:22,480

engines throttling up 3 engines and out

324
00:11:22,480 --> 00:11:22,490
engines throttling up 3 engines and out
 

325
00:11:22,490 --> 00:11:31,170
engines throttling up 3 engines and out
104 percent challenger go at throttle up

326
00:11:31,170 --> 00:11:31,180

 

327
00:11:31,180 --> 00:11:34,330

1 minute 15 seconds velocity 2,900 feet

328
00:11:34,330 --> 00:11:34,340
1 minute 15 seconds velocity 2,900 feet
 

329
00:11:34,340 --> 00:11:36,190
1 minute 15 seconds velocity 2,900 feet
per second altitude nautical miles

330
00:11:36,190 --> 00:11:36,200
per second altitude nautical miles
 

331
00:11:36,200 --> 00:12:07,540
per second altitude nautical miles
downrange distance $7 off

332
00:12:07,540 --> 00:12:07,550

 

333
00:12:07,550 --> 00:12:09,470

my controllers here looking very

334
00:12:09,470 --> 00:12:09,480
my controllers here looking very
 

335
00:12:09,480 --> 00:12:13,130
my controllers here looking very
carefully at the situation obviously a

336
00:12:13,130 --> 00:12:13,140
carefully at the situation obviously a
 

337
00:12:13,140 --> 00:12:19,180
carefully at the situation obviously a
major malfunction

338
00:12:19,180 --> 00:12:19,190

 

339
00:12:19,190 --> 00:12:59,560

we have no down Lee

340
00:12:59,560 --> 00:12:59,570

 

341
00:12:59,570 --> 00:13:01,480

we have a report from the flight

342
00:13:01,480 --> 00:13:01,490
we have a report from the flight
 

343
00:13:01,490 --> 00:13:03,129
we have a report from the flight
dynamics officer that the vehicle has

344
00:13:03,129 --> 00:13:03,139
dynamics officer that the vehicle has
 

345
00:13:03,139 --> 00:13:05,530
dynamics officer that the vehicle has
exploded flight director confirms that

346
00:13:05,530 --> 00:13:05,540
exploded flight director confirms that
 

347
00:13:05,540 --> 00:13:08,199
exploded flight director confirms that
we are looking at checking with the

348
00:13:08,199 --> 00:13:08,209
we are looking at checking with the
 

349
00:13:08,209 --> 00:13:10,210
we are looking at checking with the
recovery forces to see what can be done

350
00:13:10,210 --> 00:13:10,220
recovery forces to see what can be done
 

351
00:13:10,220 --> 00:13:20,680
recovery forces to see what can be done
at this point contingency procedures are

352
00:13:20,680 --> 00:13:20,690
at this point contingency procedures are
 

353
00:13:20,690 --> 00:13:29,720
at this point contingency procedures are
in effect

354
00:13:29,720 --> 00:13:29,730

 

355
00:13:29,730 --> 00:13:32,599

we will report more as we have

356
00:13:32,599 --> 00:13:32,609
we will report more as we have
 

357
00:13:32,609 --> 00:13:36,289
we will report more as we have
information available again or repeat we

358
00:13:36,289 --> 00:13:36,299
information available again or repeat we
 

359
00:13:36,299 --> 00:13:38,689
information available again or repeat we
have a report relayed through the flight

360
00:13:38,689 --> 00:13:38,699
have a report relayed through the flight
 

361
00:13:38,699 --> 00:13:41,239
have a report relayed through the flight
dynamics officer that the vehicle has

362
00:13:41,239 --> 00:13:41,249
dynamics officer that the vehicle has
 

363
00:13:41,249 --> 00:13:45,679
dynamics officer that the vehicle has
exploded we are now looking at all the

364
00:13:45,679 --> 00:13:45,689
exploded we are now looking at all the
 

365
00:13:45,689 --> 00:13:48,409
exploded we are now looking at all the
contingency operations and waiting the

366
00:13:48,409 --> 00:13:48,419
contingency operations and waiting the
 

367
00:13:48,419 --> 00:13:51,079
contingency operations and waiting the
report from any recovery of horses in

368
00:13:51,079 --> 00:13:51,089
report from any recovery of horses in
 

369
00:13:51,089 --> 00:15:55,170
report from any recovery of horses in
the downrange field

370
00:15:55,170 --> 00:15:55,180

 

371
00:15:55,180 --> 00:15:57,189

flight of the space shuttle Challenger

372
00:15:57,189 --> 00:15:57,199
flight of the space shuttle Challenger
 

373
00:15:57,199 --> 00:16:00,939
flight of the space shuttle Challenger
on mission 51 L the 25th flight of the

374
00:16:00,939 --> 00:16:00,949
on mission 51 L the 25th flight of the
 

375
00:16:00,949 --> 00:16:03,550
on mission 51 L the 25th flight of the
space shuttle program began at 11:38

376
00:16:03,550 --> 00:16:03,560
space shuttle program began at 11:38
 

377
00:16:03,560 --> 00:16:06,939
space shuttle program began at 11:38
a.m. Eastern Standard Time on January 28

378
00:16:06,939 --> 00:16:06,949
a.m. Eastern Standard Time on January 28
 

379
00:16:06,949 --> 00:16:11,470
a.m. Eastern Standard Time on January 28
1986 it ended 73 seconds later in a

380
00:16:11,470 --> 00:16:11,480
1986 it ended 73 seconds later in a
 

381
00:16:11,480 --> 00:16:13,569
1986 it ended 73 seconds later in a
structural breakup of the external tank

382
00:16:13,569 --> 00:16:13,579
structural breakup of the external tank
 

383
00:16:13,579 --> 00:16:15,549
structural breakup of the external tank
and orbiter in which the seven crew

384
00:16:15,549 --> 00:16:15,559
and orbiter in which the seven crew
 

385
00:16:15,559 --> 00:16:18,939
and orbiter in which the seven crew
members perished the solid rocket

386
00:16:18,939 --> 00:16:18,949
members perished the solid rocket
 

387
00:16:18,949 --> 00:16:21,340
members perished the solid rocket
boosters continued in flight and were

388
00:16:21,340 --> 00:16:21,350
boosters continued in flight and were
 

389
00:16:21,350 --> 00:16:23,249
boosters continued in flight and were
destroyed by the Range Safety Officer

390
00:16:23,249 --> 00:16:23,259
destroyed by the Range Safety Officer
 

391
00:16:23,259 --> 00:16:38,410
destroyed by the Range Safety Officer
110 seconds after launch

392
00:16:38,410 --> 00:16:38,420

 

393
00:16:38,420 --> 00:16:41,380

the delivery and assembly of 51l launch

394
00:16:41,380 --> 00:16:41,390
the delivery and assembly of 51l launch
 

395
00:16:41,390 --> 00:16:43,630
the delivery and assembly of 51l launch
vehicle components began months prior to

396
00:16:43,630 --> 00:16:43,640
vehicle components began months prior to
 

397
00:16:43,640 --> 00:16:45,270
vehicle components began months prior to
launch

398
00:16:45,270 --> 00:16:45,280
launch
 

399
00:16:45,280 --> 00:16:48,070
launch
the solid rocket booster segments were

400
00:16:48,070 --> 00:16:48,080
the solid rocket booster segments were
 

401
00:16:48,080 --> 00:16:50,110
the solid rocket booster segments were
transported by rail to the Kennedy Space

402
00:16:50,110 --> 00:16:50,120
transported by rail to the Kennedy Space
 

403
00:16:50,120 --> 00:16:59,230
transported by rail to the Kennedy Space
Center the SRBs were inspected and

404
00:16:59,230 --> 00:16:59,240
Center the SRBs were inspected and
 

405
00:16:59,240 --> 00:17:01,020
Center the SRBs were inspected and
partially assembled at the rotation

406
00:17:01,020 --> 00:17:01,030
partially assembled at the rotation
 

407
00:17:01,030 --> 00:17:10,300
partially assembled at the rotation
processing and storage facility the

408
00:17:10,300 --> 00:17:10,310
processing and storage facility the
 

409
00:17:10,310 --> 00:17:12,100
processing and storage facility the
segments were then moved to the Vehicle

410
00:17:12,100 --> 00:17:12,110
segments were then moved to the Vehicle
 

411
00:17:12,110 --> 00:17:14,590
segments were then moved to the Vehicle
Assembly Building or VAB where they were

412
00:17:14,590 --> 00:17:14,600
Assembly Building or VAB where they were
 

413
00:17:14,600 --> 00:17:26,590
Assembly Building or VAB where they were
stacked on the mobile launch platform

414
00:17:26,590 --> 00:17:26,600

 

415
00:17:26,600 --> 00:17:29,259

the external tank arrived at KSC by

416
00:17:29,259 --> 00:17:29,269
the external tank arrived at KSC by
 

417
00:17:29,269 --> 00:17:32,529
the external tank arrived at KSC by
barge and was moved into the VAB where

418
00:17:32,529 --> 00:17:32,539
barge and was moved into the VAB where
 

419
00:17:32,539 --> 00:17:34,480
barge and was moved into the VAB where
it was checked out and made it to the

420
00:17:34,480 --> 00:17:34,490
it was checked out and made it to the
 

421
00:17:34,490 --> 00:17:45,519
it was checked out and made it to the
stacked solid rocket boosters after

422
00:17:45,519 --> 00:17:45,529
stacked solid rocket boosters after
 

423
00:17:45,529 --> 00:17:47,769
stacked solid rocket boosters after
orbiter check out challenger was rolled

424
00:17:47,769 --> 00:17:47,779
orbiter check out challenger was rolled
 

425
00:17:47,779 --> 00:17:52,210
orbiter check out challenger was rolled
into the VAB and mated with the

426
00:17:52,210 --> 00:17:52,220
into the VAB and mated with the
 

427
00:17:52,220 --> 00:18:00,930
into the VAB and mated with the
assembled external tank and SRBs

428
00:18:00,930 --> 00:18:00,940

 

429
00:18:00,940 --> 00:18:04,440

the STS 51l vehicle was transported from

430
00:18:04,440 --> 00:18:04,450
the STS 51l vehicle was transported from
 

431
00:18:04,450 --> 00:18:06,810
the STS 51l vehicle was transported from
the VAB to the launch pad on December

432
00:18:06,810 --> 00:18:06,820
the VAB to the launch pad on December
 

433
00:18:06,820 --> 00:18:10,799
the VAB to the launch pad on December
22nd 1985 at a crawler speed of

434
00:18:10,799 --> 00:18:10,809
22nd 1985 at a crawler speed of
 

435
00:18:10,809 --> 00:18:13,080
22nd 1985 at a crawler speed of
approximately one mile per hour the

436
00:18:13,080 --> 00:18:13,090
approximately one mile per hour the
 

437
00:18:13,090 --> 00:18:19,169
approximately one mile per hour the
journey takes about six hours the launch

438
00:18:19,169 --> 00:18:19,179
journey takes about six hours the launch
 

439
00:18:19,179 --> 00:18:21,690
journey takes about six hours the launch
was rescheduled several times resulting

440
00:18:21,690 --> 00:18:21,700
was rescheduled several times resulting
 

441
00:18:21,700 --> 00:18:24,149
was rescheduled several times resulting
in the final countdown on January 28

442
00:18:24,149 --> 00:18:24,159
in the final countdown on January 28
 

443
00:18:24,159 --> 00:18:27,960
in the final countdown on January 28
1986 the weather was forecast to be

444
00:18:27,960 --> 00:18:27,970
1986 the weather was forecast to be
 

445
00:18:27,970 --> 00:18:29,549
1986 the weather was forecast to be
clear and cold with temperatures

446
00:18:29,549 --> 00:18:29,559
clear and cold with temperatures
 

447
00:18:29,559 --> 00:18:33,960
clear and cold with temperatures
dropping into the low 20s overnight the

448
00:18:33,960 --> 00:18:33,970
dropping into the low 20s overnight the
 

449
00:18:33,970 --> 00:18:35,969
dropping into the low 20s overnight the
fueling of the external tank began at

450
00:18:35,969 --> 00:18:35,979
fueling of the external tank began at
 

451
00:18:35,979 --> 00:18:41,070
fueling of the external tank began at
1:25 a.m. I said accumulated on the

452
00:18:41,070 --> 00:18:41,080
1:25 a.m. I said accumulated on the
 

453
00:18:41,080 --> 00:18:43,529
1:25 a.m. I said accumulated on the
launch pad during the night several

454
00:18:43,529 --> 00:18:43,539
launch pad during the night several
 

455
00:18:43,539 --> 00:18:45,570
launch pad during the night several
water systems were opened slightly and

456
00:18:45,570 --> 00:18:45,580
water systems were opened slightly and
 

457
00:18:45,580 --> 00:18:48,330
water systems were opened slightly and
allowed to flow into drains the drains

458
00:18:48,330 --> 00:18:48,340
allowed to flow into drains the drains
 

459
00:18:48,340 --> 00:18:51,629
allowed to flow into drains the drains
froze and caused overflows high wind

460
00:18:51,629 --> 00:18:51,639
froze and caused overflows high wind
 

461
00:18:51,639 --> 00:18:53,879
froze and caused overflows high wind
gusts spread the water over large areas

462
00:18:53,879 --> 00:18:53,889
gusts spread the water over large areas
 

463
00:18:53,889 --> 00:18:59,999
gusts spread the water over large areas
and ice formed the air temperature at

464
00:18:59,999 --> 00:19:00,009
and ice formed the air temperature at
 

465
00:19:00,009 --> 00:19:03,089
and ice formed the air temperature at
launch was 36 degrees Fahrenheit this

466
00:19:03,089 --> 00:19:03,099
launch was 36 degrees Fahrenheit this
 

467
00:19:03,099 --> 00:19:05,489
launch was 36 degrees Fahrenheit this
was 15 degrees colder than any previous

468
00:19:05,489 --> 00:19:05,499
was 15 degrees colder than any previous
 

469
00:19:05,499 --> 00:19:15,690
was 15 degrees colder than any previous
launch at t-minus 7 minutes and 30

470
00:19:15,690 --> 00:19:15,700
launch at t-minus 7 minutes and 30
 

471
00:19:15,700 --> 00:19:17,279
launch at t-minus 7 minutes and 30
seconds the ground launch sequencer

472
00:19:17,279 --> 00:19:17,289
seconds the ground launch sequencer
 

473
00:19:17,289 --> 00:19:20,759
seconds the ground launch sequencer
began retracting the crew access arm the

474
00:19:20,759 --> 00:19:20,769
began retracting the crew access arm the
 

475
00:19:20,769 --> 00:19:23,009
began retracting the crew access arm the
arm can be put back in place within 15

476
00:19:23,009 --> 00:19:23,019
arm can be put back in place within 15
 

477
00:19:23,019 --> 00:19:25,710
arm can be put back in place within 15
to 20 seconds if an emergency arises and

478
00:19:25,710 --> 00:19:25,720
to 20 seconds if an emergency arises and
 

479
00:19:25,720 --> 00:19:29,479
to 20 seconds if an emergency arises and
the crew must evacuate the pad at

480
00:19:29,479 --> 00:19:29,489
the crew must evacuate the pad at
 

481
00:19:29,489 --> 00:19:33,089
the crew must evacuate the pad at
t-minus 3 minutes and 15 seconds gimble

482
00:19:33,089 --> 00:19:33,099
t-minus 3 minutes and 15 seconds gimble
 

483
00:19:33,099 --> 00:19:34,919
t-minus 3 minutes and 15 seconds gimble
checks of the orbiter main engines were

484
00:19:34,919 --> 00:19:34,929
checks of the orbiter main engines were
 

485
00:19:34,929 --> 00:19:37,710
checks of the orbiter main engines were
performed all three engines move in a

486
00:19:37,710 --> 00:19:37,720
performed all three engines move in a
 

487
00:19:37,720 --> 00:19:40,019
performed all three engines move in a
pre-programmed pattern to verify a sent

488
00:19:40,019 --> 00:19:40,029
pre-programmed pattern to verify a sent
 

489
00:19:40,029 --> 00:19:43,200
pre-programmed pattern to verify a sent
flight control the gimbal sequence ends

490
00:19:43,200 --> 00:19:43,210
flight control the gimbal sequence ends
 

491
00:19:43,210 --> 00:19:44,609
flight control the gimbal sequence ends
with the engines in their start

492
00:19:44,609 --> 00:19:44,619
with the engines in their start
 

493
00:19:44,619 --> 00:19:52,049
with the engines in their start
positions at t-minus 2 minutes and 55

494
00:19:52,049 --> 00:19:52,059
positions at t-minus 2 minutes and 55
 

495
00:19:52,059 --> 00:19:54,419
positions at t-minus 2 minutes and 55
seconds external tank liquid oxygen

496
00:19:54,419 --> 00:19:54,429
seconds external tank liquid oxygen
 

497
00:19:54,429 --> 00:19:56,789
seconds external tank liquid oxygen
pressurization began and main engine

498
00:19:56,789 --> 00:19:56,799
pressurization began and main engine
 

499
00:19:56,799 --> 00:19:59,669
pressurization began and main engine
purging was completed at t-minus 2

500
00:19:59,669 --> 00:19:59,679
purging was completed at t-minus 2
 

501
00:19:59,679 --> 00:20:01,799
purging was completed at t-minus 2
minutes and 50 seconds retraction of the

502
00:20:01,799 --> 00:20:01,809
minutes and 50 seconds retraction of the
 

503
00:20:01,809 --> 00:20:05,219
minutes and 50 seconds retraction of the
gaseous oxygen vent hood began the

504
00:20:05,219 --> 00:20:05,229
gaseous oxygen vent hood began the
 

505
00:20:05,229 --> 00:20:07,169
gaseous oxygen vent hood began the
ground launch sequencer verified its

506
00:20:07,169 --> 00:20:07,179
ground launch sequencer verified its
 

507
00:20:07,179 --> 00:20:14,280
ground launch sequencer verified its
full retraction at t-minus 37 seconds

508
00:20:14,280 --> 00:20:14,290

 

509
00:20:14,290 --> 00:20:17,080

sound suppression water was started at t

510
00:20:17,080 --> 00:20:17,090
sound suppression water was started at t
 

511
00:20:17,090 --> 00:20:24,190
sound suppression water was started at t
minus 16 seconds at t minus 8 seconds

512
00:20:24,190 --> 00:20:24,200
minus 16 seconds at t minus 8 seconds
 

513
00:20:24,200 --> 00:20:26,410
minus 16 seconds at t minus 8 seconds
hydrogen igniters were turned on to burn

514
00:20:26,410 --> 00:20:26,420
hydrogen igniters were turned on to burn
 

515
00:20:26,420 --> 00:20:32,920
hydrogen igniters were turned on to burn
off any free hydrogen six point six

516
00:20:32,920 --> 00:20:32,930
off any free hydrogen six point six
 

517
00:20:32,930 --> 00:20:35,260
off any free hydrogen six point six
seconds before launch challengers liquid

518
00:20:35,260 --> 00:20:35,270
seconds before launch challengers liquid
 

519
00:20:35,270 --> 00:20:37,090
seconds before launch challengers liquid
fueled main engines were ignited in

520
00:20:37,090 --> 00:20:37,100
fueled main engines were ignited in
 

521
00:20:37,100 --> 00:20:47,100
fueled main engines were ignited in
sequence and run up to full thrust

522
00:20:47,100 --> 00:20:47,110

 

523
00:20:47,110 --> 00:20:49,690

thrust from the main engines bends the

524
00:20:49,690 --> 00:20:49,700
thrust from the main engines bends the
 

525
00:20:49,700 --> 00:20:52,030
thrust from the main engines bends the
shuttle stack when it returned to

526
00:20:52,030 --> 00:20:52,040
shuttle stack when it returned to
 

527
00:20:52,040 --> 00:20:54,010
shuttle stack when it returned to
vertical the solid rocket boosters

528
00:20:54,010 --> 00:20:54,020
vertical the solid rocket boosters
 

529
00:20:54,020 --> 00:20:57,790
vertical the solid rocket boosters
ignited at t zero the hold-down bolts

530
00:20:57,790 --> 00:20:57,800
ignited at t zero the hold-down bolts
 

531
00:20:57,800 --> 00:21:01,480
ignited at t zero the hold-down bolts
were explosively released after the

532
00:21:01,480 --> 00:21:01,490
were explosively released after the
 

533
00:21:01,490 --> 00:21:03,430
were explosively released after the
initial pre release twang motion

534
00:21:03,430 --> 00:21:03,440
initial pre release twang motion
 

535
00:21:03,440 --> 00:21:05,530
initial pre release twang motion
structural forces on the assembly are

536
00:21:05,530 --> 00:21:05,540
structural forces on the assembly are
 

537
00:21:05,540 --> 00:21:07,600
structural forces on the assembly are
dissipated through vibration at a rate

538
00:21:07,600 --> 00:21:07,610
dissipated through vibration at a rate
 

539
00:21:07,610 --> 00:21:09,550
dissipated through vibration at a rate
of three cycles per second during the

540
00:21:09,550 --> 00:21:09,560
of three cycles per second during the
 

541
00:21:09,560 --> 00:21:17,260
of three cycles per second during the
first few seconds of flight roll

542
00:21:17,260 --> 00:21:17,270
first few seconds of flight roll
 

543
00:21:17,270 --> 00:21:19,390
first few seconds of flight roll
maneuver was initiated at seven point

544
00:21:19,390 --> 00:21:19,400
maneuver was initiated at seven point
 

545
00:21:19,400 --> 00:21:24,280
maneuver was initiated at seven point
seven to four seconds the maneuver was

546
00:21:24,280 --> 00:21:24,290
seven to four seconds the maneuver was
 

547
00:21:24,290 --> 00:21:26,230
seven to four seconds the maneuver was
completed at twenty-one point one to

548
00:21:26,230 --> 00:21:26,240
completed at twenty-one point one to
 

549
00:21:26,240 --> 00:21:30,070
completed at twenty-one point one to
four seconds most of the plane hundred

550
00:21:30,070 --> 00:21:30,080
four seconds most of the plane hundred
 

551
00:21:30,080 --> 00:21:34,200
four seconds most of the plane hundred
and four percent will throttle down to

552
00:21:34,200 --> 00:21:34,210
and four percent will throttle down to
 

553
00:21:34,210 --> 00:21:36,820
and four percent will throttle down to
the main engines were throttled back to

554
00:21:36,820 --> 00:21:36,830
the main engines were throttled back to
 

555
00:21:36,830 --> 00:21:39,820
the main engines were throttled back to
65 percent at 35 point three seven nine

556
00:21:39,820 --> 00:21:39,830
65 percent at 35 point three seven nine
 

557
00:21:39,830 --> 00:21:43,000
65 percent at 35 point three seven nine
seconds for about 16 seconds in order to

558
00:21:43,000 --> 00:21:43,010
seconds for about 16 seconds in order to
 

559
00:21:43,010 --> 00:21:45,070
seconds for about 16 seconds in order to
alleviate loads during maximum dynamic

560
00:21:45,070 --> 00:21:45,080
alleviate loads during maximum dynamic
 

561
00:21:45,080 --> 00:21:50,800
alleviate loads during maximum dynamic
pressure velocity 2257 feet per second

562
00:21:50,800 --> 00:21:50,810
pressure velocity 2257 feet per second
 

563
00:21:50,810 --> 00:21:52,540
pressure velocity 2257 feet per second
altitude four point three nautical miles

564
00:21:52,540 --> 00:21:52,550
altitude four point three nautical miles
 

565
00:21:52,550 --> 00:21:54,430
altitude four point three nautical miles
downrange distance the engines were then

566
00:21:54,430 --> 00:21:54,440
downrange distance the engines were then
 

567
00:21:54,440 --> 00:21:57,190
downrange distance the engines were then
throttled up to 104 percent at fifty one

568
00:21:57,190 --> 00:21:57,200
throttled up to 104 percent at fifty one
 

569
00:21:57,200 --> 00:22:03,580
throttled up to 104 percent at fifty one
point nine one nine seconds during the

570
00:22:03,580 --> 00:22:03,590
point nine one nine seconds during the
 

571
00:22:03,590 --> 00:22:05,560
point nine one nine seconds during the
flight telemetry data gave no indication

572
00:22:05,560 --> 00:22:05,570
flight telemetry data gave no indication
 

573
00:22:05,570 --> 00:22:10,880
flight telemetry data gave no indication
of problems

574
00:22:10,880 --> 00:22:10,890

 

575
00:22:10,890 --> 00:22:13,800

minute 15 seconds velocity 2,900 feet

576
00:22:13,800 --> 00:22:13,810
minute 15 seconds velocity 2,900 feet
 

577
00:22:13,810 --> 00:22:15,660
minute 15 seconds velocity 2,900 feet
per second altitude nautical miles

578
00:22:15,660 --> 00:22:15,670
per second altitude nautical miles
 

579
00:22:15,670 --> 00:22:35,810
per second altitude nautical miles
downrange distance $7 off

580
00:22:35,810 --> 00:22:35,820

 

581
00:22:35,820 --> 00:22:38,760

the solid rocket boosters continued in

582
00:22:38,760 --> 00:22:38,770
the solid rocket boosters continued in
 

583
00:22:38,770 --> 00:22:40,769
the solid rocket boosters continued in
flight and were destroyed by the Range

584
00:22:40,769 --> 00:22:40,779
flight and were destroyed by the Range
 

585
00:22:40,779 --> 00:22:49,669
flight and were destroyed by the Range
Safety Officer 110 seconds after launch

586
00:22:49,669 --> 00:22:49,679

 

587
00:22:49,679 --> 00:22:52,529

data from nearly 200 cameras were

588
00:22:52,529 --> 00:22:52,539
data from nearly 200 cameras were
 

589
00:22:52,539 --> 00:22:55,110
data from nearly 200 cameras were
analyzed during the investigation the

590
00:22:55,110 --> 00:22:55,120
analyzed during the investigation the
 

591
00:22:55,120 --> 00:22:57,210
analyzed during the investigation the
following sequence of events is based on

592
00:22:57,210 --> 00:22:57,220
following sequence of events is based on
 

593
00:22:57,220 --> 00:22:59,549
following sequence of events is based on
the evaluation of film video and

594
00:22:59,549 --> 00:22:59,559
the evaluation of film video and
 

595
00:22:59,559 --> 00:23:04,830
the evaluation of film video and
telemetry data this graphic indicates

596
00:23:04,830 --> 00:23:04,840
telemetry data this graphic indicates
 

597
00:23:04,840 --> 00:23:07,110
telemetry data this graphic indicates
viewing angles for three cameras in the

598
00:23:07,110 --> 00:23:07,120
viewing angles for three cameras in the
 

599
00:23:07,120 --> 00:23:09,480
viewing angles for three cameras in the
vicinity of the launch site the first

600
00:23:09,480 --> 00:23:09,490
vicinity of the launch site the first
 

601
00:23:09,490 --> 00:23:12,360
vicinity of the launch site the first
view shown is from camera East 63 at the

602
00:23:12,360 --> 00:23:12,370
view shown is from camera East 63 at the
 

603
00:23:12,370 --> 00:23:16,200
view shown is from camera East 63 at the
lower right of the chart at point six

604
00:23:16,200 --> 00:23:16,210
lower right of the chart at point six
 

605
00:23:16,210 --> 00:23:18,029
lower right of the chart at point six
seven eight seconds into the flight a

606
00:23:18,029 --> 00:23:18,039
seven eight seconds into the flight a
 

607
00:23:18,039 --> 00:23:20,220
seven eight seconds into the flight a
strong puff of grey smoke can be seen

608
00:23:20,220 --> 00:23:20,230
strong puff of grey smoke can be seen
 

609
00:23:20,230 --> 00:23:22,169
strong puff of grey smoke can be seen
spurting from the vicinity of the aft

610
00:23:22,169 --> 00:23:22,179
spurting from the vicinity of the aft
 

611
00:23:22,179 --> 00:23:24,210
spurting from the vicinity of the aft
field joint on the right solid rocket

612
00:23:24,210 --> 00:23:24,220
field joint on the right solid rocket
 

613
00:23:24,220 --> 00:23:27,600
field joint on the right solid rocket
booster the vaporized material streaming

614
00:23:27,600 --> 00:23:27,610
booster the vaporized material streaming
 

615
00:23:27,610 --> 00:23:29,220
booster the vaporized material streaming
from the joint indicates there was not

616
00:23:29,220 --> 00:23:29,230
from the joint indicates there was not
 

617
00:23:29,230 --> 00:23:32,600
from the joint indicates there was not
complete sealing action within the joint

618
00:23:32,600 --> 00:23:32,610
complete sealing action within the joint
 

619
00:23:32,610 --> 00:23:36,510
complete sealing action within the joint
this second view is from camera e60 the

620
00:23:36,510 --> 00:23:36,520
this second view is from camera e60 the
 

621
00:23:36,520 --> 00:23:38,760
this second view is from camera e60 the
smoke can be seen between the right SRB

622
00:23:38,760 --> 00:23:38,770
smoke can be seen between the right SRB
 

623
00:23:38,770 --> 00:23:40,980
smoke can be seen between the right SRB
and the external tank and initially

624
00:23:40,980 --> 00:23:40,990
and the external tank and initially
 

625
00:23:40,990 --> 00:23:43,799
and the external tank and initially
moves in the upward direction the angle

626
00:23:43,799 --> 00:23:43,809
moves in the upward direction the angle
 

627
00:23:43,809 --> 00:23:46,110
moves in the upward direction the angle
between this view and a 63 is

628
00:23:46,110 --> 00:23:46,120
between this view and a 63 is
 

629
00:23:46,120 --> 00:23:56,190
between this view and a 63 is
approximately 100 degrees with a 60 and

630
00:23:56,190 --> 00:23:56,200
approximately 100 degrees with a 60 and
 

631
00:23:56,200 --> 00:23:59,340
approximately 100 degrees with a 60 and
e63 side-by-side it is clear that when

632
00:23:59,340 --> 00:23:59,350
e63 side-by-side it is clear that when
 

633
00:23:59,350 --> 00:24:02,100
e63 side-by-side it is clear that when
smoke is first visible to camera e60 it

634
00:24:02,100 --> 00:24:02,110
smoke is first visible to camera e60 it
 

635
00:24:02,110 --> 00:24:06,000
smoke is first visible to camera e60 it
is not yet visible to e63 point two

636
00:24:06,000 --> 00:24:06,010
is not yet visible to e63 point two
 

637
00:24:06,010 --> 00:24:08,909
is not yet visible to e63 point two
seconds later it becomes visible to e63

638
00:24:08,909 --> 00:24:08,919
seconds later it becomes visible to e63
 

639
00:24:08,919 --> 00:24:11,730
seconds later it becomes visible to e63
and is seen in multiple lobes or puffs

640
00:24:11,730 --> 00:24:11,740
and is seen in multiple lobes or puffs
 

641
00:24:11,740 --> 00:24:14,880
and is seen in multiple lobes or puffs
reaching maximum visibility at about 1.9

642
00:24:14,880 --> 00:24:14,890
reaching maximum visibility at about 1.9
 

643
00:24:14,890 --> 00:24:19,169
reaching maximum visibility at about 1.9
seconds a third higher resolution camera

644
00:24:19,169 --> 00:24:19,179
seconds a third higher resolution camera
 

645
00:24:19,179 --> 00:24:22,350
seconds a third higher resolution camera
D 67 was located east of the launch pad

646
00:24:22,350 --> 00:24:22,360
D 67 was located east of the launch pad
 

647
00:24:22,360 --> 00:24:25,889
D 67 was located east of the launch pad
D 67 recorded this view of the smoke at

648
00:24:25,889 --> 00:24:25,899
D 67 recorded this view of the smoke at
 

649
00:24:25,899 --> 00:24:27,990
D 67 recorded this view of the smoke at
approximately the same time of maximum

650
00:24:27,990 --> 00:24:28,000
approximately the same time of maximum
 

651
00:24:28,000 --> 00:24:30,779
approximately the same time of maximum
development smoke appears to the right

652
00:24:30,779 --> 00:24:30,789
development smoke appears to the right
 

653
00:24:30,789 --> 00:24:33,539
development smoke appears to the right
side of the SRB only while normal water

654
00:24:33,539 --> 00:24:33,549
side of the SRB only while normal water
 

655
00:24:33,549 --> 00:24:37,190
side of the SRB only while normal water
condensation vapors appear to the left

656
00:24:37,190 --> 00:24:37,200
condensation vapors appear to the left
 

657
00:24:37,200 --> 00:24:40,080
condensation vapors appear to the left
this plan shows that none of the cameras

658
00:24:40,080 --> 00:24:40,090
this plan shows that none of the cameras
 

659
00:24:40,090 --> 00:24:41,850
this plan shows that none of the cameras
directly view the surface of the right

660
00:24:41,850 --> 00:24:41,860
directly view the surface of the right
 

661
00:24:41,860 --> 00:24:45,110
directly view the surface of the right
SRB in the shaded region of the graphic

662
00:24:45,110 --> 00:24:45,120
SRB in the shaded region of the graphic
 

663
00:24:45,120 --> 00:24:47,460
SRB in the shaded region of the graphic
analysis of film from several pad

664
00:24:47,460 --> 00:24:47,470
analysis of film from several pad
 

665
00:24:47,470 --> 00:24:49,380
analysis of film from several pad
cameras indicated that the smoke

666
00:24:49,380 --> 00:24:49,390
cameras indicated that the smoke
 

667
00:24:49,390 --> 00:24:52,890
cameras indicated that the smoke
from between 270 and 310 degrees on the

668
00:24:52,890 --> 00:24:52,900
from between 270 and 310 degrees on the
 

669
00:24:52,900 --> 00:24:59,660
from between 270 and 310 degrees on the
circumference of the AFT field joint as

670
00:24:59,660 --> 00:24:59,670

 

671
00:24:59,670 --> 00:25:02,460

indicated on these preflight photos the

672
00:25:02,460 --> 00:25:02,470
indicated on these preflight photos the
 

673
00:25:02,470 --> 00:25:04,560
indicated on these preflight photos the
smoke emerged from just above the strut

674
00:25:04,560 --> 00:25:04,570
smoke emerged from just above the strut
 

675
00:25:04,570 --> 00:25:07,799
smoke emerged from just above the strut
between the SRB and ET at a point along

676
00:25:07,799 --> 00:25:07,809
between the SRB and ET at a point along
 

677
00:25:07,809 --> 00:25:10,320
between the SRB and ET at a point along
the longitudinal axis near the aft field

678
00:25:10,320 --> 00:25:10,330
the longitudinal axis near the aft field
 

679
00:25:10,330 --> 00:25:19,020
the longitudinal axis near the aft field
joint the multiple smoke puffs occurred

680
00:25:19,020 --> 00:25:19,030
joint the multiple smoke puffs occurred
 

681
00:25:19,030 --> 00:25:21,140
joint the multiple smoke puffs occurred
at a rate of about 4 times per second

682
00:25:21,140 --> 00:25:21,150
at a rate of about 4 times per second
 

683
00:25:21,150 --> 00:25:23,070
at a rate of about 4 times per second
approximating the frequency of the

684
00:25:23,070 --> 00:25:23,080
approximating the frequency of the
 

685
00:25:23,080 --> 00:25:25,230
approximating the frequency of the
structural load dynamics and resultant

686
00:25:25,230 --> 00:25:25,240
structural load dynamics and resultant
 

687
00:25:25,240 --> 00:25:29,610
structural load dynamics and resultant
joint flexing this greatly exaggerated

688
00:25:29,610 --> 00:25:29,620
joint flexing this greatly exaggerated
 

689
00:25:29,620 --> 00:25:31,799
joint flexing this greatly exaggerated
computer animation depicts the flexing

690
00:25:31,799 --> 00:25:31,809
computer animation depicts the flexing
 

691
00:25:31,809 --> 00:25:35,610
computer animation depicts the flexing
of the SRB joint this flexing increased

692
00:25:35,610 --> 00:25:35,620
of the SRB joint this flexing increased
 

693
00:25:35,620 --> 00:25:37,770
of the SRB joint this flexing increased
the gap between the tang and clevis at

694
00:25:37,770 --> 00:25:37,780
the gap between the tang and clevis at
 

695
00:25:37,780 --> 00:25:41,930
the gap between the tang and clevis at
the location of two rubber o-ring seals

696
00:25:41,930 --> 00:25:41,940
the location of two rubber o-ring seals
 

697
00:25:41,940 --> 00:25:44,580
the location of two rubber o-ring seals
last evidence of smoke above the aft

698
00:25:44,580 --> 00:25:44,590
last evidence of smoke above the aft
 

699
00:25:44,590 --> 00:25:47,789
last evidence of smoke above the aft
attached ring appears at 2.7 3 3 seconds

700
00:25:47,789 --> 00:25:47,799
attached ring appears at 2.7 3 3 seconds
 

701
00:25:47,799 --> 00:25:50,610
attached ring appears at 2.7 3 3 seconds
the last indication of smoke dispersing

702
00:25:50,610 --> 00:25:50,620
the last indication of smoke dispersing
 

703
00:25:50,620 --> 00:25:53,669
the last indication of smoke dispersing
below the F don't appear zat 3.37 5

704
00:25:53,669 --> 00:25:53,679
below the F don't appear zat 3.37 5
 

705
00:25:53,679 --> 00:25:56,090
below the F don't appear zat 3.37 5
seconds

706
00:25:56,090 --> 00:25:56,100
seconds
 

707
00:25:56,100 --> 00:25:58,590
seconds
film records of the Assembly of the

708
00:25:58,590 --> 00:25:58,600
film records of the Assembly of the
 

709
00:25:58,600 --> 00:26:00,659
film records of the Assembly of the
solid rocket booster were reviewed to

710
00:26:00,659 --> 00:26:00,669
solid rocket booster were reviewed to
 

711
00:26:00,669 --> 00:26:02,610
solid rocket booster were reviewed to
determine any evidence of cause for the

712
00:26:02,610 --> 00:26:02,620
determine any evidence of cause for the
 

713
00:26:02,620 --> 00:26:07,289
determine any evidence of cause for the
smoke photographs taken just prior to

714
00:26:07,289 --> 00:26:07,299
smoke photographs taken just prior to
 

715
00:26:07,299 --> 00:26:09,000
smoke photographs taken just prior to
mating of the booster segments at the

716
00:26:09,000 --> 00:26:09,010
mating of the booster segments at the
 

717
00:26:09,010 --> 00:26:10,830
mating of the booster segments at the
aft field joint show the o-rings

718
00:26:10,830 --> 00:26:10,840
aft field joint show the o-rings
 

719
00:26:10,840 --> 00:26:13,190
aft field joint show the o-rings
installed in the grease clevis grooves a

720
00:26:13,190 --> 00:26:13,200
installed in the grease clevis grooves a
 

721
00:26:13,200 --> 00:26:15,900
installed in the grease clevis grooves a
subtle variation was detected but

722
00:26:15,900 --> 00:26:15,910
subtle variation was detected but
 

723
00:26:15,910 --> 00:26:17,430
subtle variation was detected but
through computer enhancement was

724
00:26:17,430 --> 00:26:17,440
through computer enhancement was
 

725
00:26:17,440 --> 00:26:19,169
through computer enhancement was
determined to be a shadow caused by

726
00:26:19,169 --> 00:26:19,179
determined to be a shadow caused by
 

727
00:26:19,179 --> 00:26:22,200
determined to be a shadow caused by
irregularities in the grease no evidence

728
00:26:22,200 --> 00:26:22,210
irregularities in the grease no evidence
 

729
00:26:22,210 --> 00:26:24,630
irregularities in the grease no evidence
of oring defects was observed in any of

730
00:26:24,630 --> 00:26:24,640
of oring defects was observed in any of
 

731
00:26:24,640 --> 00:26:28,080
of oring defects was observed in any of
the stacking photography the facility

732
00:26:28,080 --> 00:26:28,090
the stacking photography the facility
 

733
00:26:28,090 --> 00:26:30,060
the stacking photography the facility
gaseous hydrogen vent arm was not

734
00:26:30,060 --> 00:26:30,070
gaseous hydrogen vent arm was not
 

735
00:26:30,070 --> 00:26:33,000
gaseous hydrogen vent arm was not
captured after retraction at launch film

736
00:26:33,000 --> 00:26:33,010
captured after retraction at launch film
 

737
00:26:33,010 --> 00:26:34,860
captured after retraction at launch film
analysis however showed that it did not

738
00:26:34,860 --> 00:26:34,870
analysis however showed that it did not
 

739
00:26:34,870 --> 00:26:37,230
analysis however showed that it did not
rebound and contact the vehicle or

740
00:26:37,230 --> 00:26:37,240
rebound and contact the vehicle or
 

741
00:26:37,240 --> 00:26:42,960
rebound and contact the vehicle or
contribute to the accident post launch

742
00:26:42,960 --> 00:26:42,970
contribute to the accident post launch
 

743
00:26:42,970 --> 00:26:44,370
contribute to the accident post launch
inspection of the hold-down posts

744
00:26:44,370 --> 00:26:44,380
inspection of the hold-down posts
 

745
00:26:44,380 --> 00:26:46,620
inspection of the hold-down posts
revealed that the kick spring assemblies

746
00:26:46,620 --> 00:26:46,630
revealed that the kick spring assemblies
 

747
00:26:46,630 --> 00:26:51,020
revealed that the kick spring assemblies
on four of the posts were missing

748
00:26:51,020 --> 00:26:51,030

 

749
00:26:51,030 --> 00:26:53,490

detailed analysis determined that the

750
00:26:53,490 --> 00:26:53,500
detailed analysis determined that the
 

751
00:26:53,500 --> 00:26:54,780
detailed analysis determined that the
assemblies could not have become

752
00:26:54,780 --> 00:26:54,790
assemblies could not have become
 

753
00:26:54,790 --> 00:26:58,200
assemblies could not have become
detached prior to t + 850 milliseconds

754
00:26:58,200 --> 00:26:58,210
detached prior to t + 850 milliseconds
 

755
00:26:58,210 --> 00:27:00,030
detached prior to t + 850 milliseconds
and were not a contributing factor to

756
00:27:00,030 --> 00:27:00,040
and were not a contributing factor to
 

757
00:27:00,040 --> 00:27:03,120
and were not a contributing factor to
the smoke observed at liftoff

758
00:27:03,120 --> 00:27:03,130
the smoke observed at liftoff
 

759
00:27:03,130 --> 00:27:05,580
the smoke observed at liftoff
the next significant event was the

760
00:27:05,580 --> 00:27:05,590
the next significant event was the
 

761
00:27:05,590 --> 00:27:07,529
the next significant event was the
development of the SRB burned through

762
00:27:07,529 --> 00:27:07,539
development of the SRB burned through
 

763
00:27:07,539 --> 00:27:15,960
development of the SRB burned through
plume camera E 2 O 7 located about 6

764
00:27:15,960 --> 00:27:15,970
plume camera E 2 O 7 located about 6
 

765
00:27:15,970 --> 00:27:18,000
plume camera E 2 O 7 located about 6
miles north of the launch pad shows the

766
00:27:18,000 --> 00:27:18,010
miles north of the launch pad shows the
 

767
00:27:18,010 --> 00:27:25,919
miles north of the launch pad shows the
growth of this plume the first evidence

768
00:27:25,919 --> 00:27:25,929
growth of this plume the first evidence
 

769
00:27:25,929 --> 00:27:27,870
growth of this plume the first evidence
of flame appeared on the right solid

770
00:27:27,870 --> 00:27:27,880
of flame appeared on the right solid
 

771
00:27:27,880 --> 00:27:29,640
of flame appeared on the right solid
rocket booster at fifty eight point

772
00:27:29,640 --> 00:27:29,650
rocket booster at fifty eight point
 

773
00:27:29,650 --> 00:27:32,340
rocket booster at fifty eight point
seven eight eight seconds this occurred

774
00:27:32,340 --> 00:27:32,350
seven eight eight seconds this occurred
 

775
00:27:32,350 --> 00:27:34,080
seven eight eight seconds this occurred
as the main engines had been throttled

776
00:27:34,080 --> 00:27:34,090
as the main engines had been throttled
 

777
00:27:34,090 --> 00:27:36,870
as the main engines had been throttled
up to 104 percent thrust and the SRBs

778
00:27:36,870 --> 00:27:36,880
up to 104 percent thrust and the SRBs
 

779
00:27:36,880 --> 00:27:41,430
up to 104 percent thrust and the SRBs
were increasing thrust camera e 203 was

780
00:27:41,430 --> 00:27:41,440
were increasing thrust camera e 203 was
 

781
00:27:41,440 --> 00:27:43,200
were increasing thrust camera e 203 was
located west of the launch site and

782
00:27:43,200 --> 00:27:43,210
located west of the launch site and
 

783
00:27:43,210 --> 00:27:46,409
located west of the launch site and
gives an aft view the exposure was set

784
00:27:46,409 --> 00:27:46,419
gives an aft view the exposure was set
 

785
00:27:46,419 --> 00:27:52,409
gives an aft view the exposure was set
for the booster nozzle plumes this

786
00:27:52,409 --> 00:27:52,419
for the booster nozzle plumes this
 

787
00:27:52,419 --> 00:27:54,330
for the booster nozzle plumes this
graphic illustrates the location of the

788
00:27:54,330 --> 00:27:54,340
graphic illustrates the location of the
 

789
00:27:54,340 --> 00:27:58,770
graphic illustrates the location of the
flare the flare was located near the aft

790
00:27:58,770 --> 00:27:58,780
flare the flare was located near the aft
 

791
00:27:58,780 --> 00:28:01,430
flare the flare was located near the aft
field joint approximately 300 degrees

792
00:28:01,430 --> 00:28:01,440
field joint approximately 300 degrees
 

793
00:28:01,440 --> 00:28:03,600
field joint approximately 300 degrees
circumferentially which is consistent

794
00:28:03,600 --> 00:28:03,610
circumferentially which is consistent
 

795
00:28:03,610 --> 00:28:05,340
circumferentially which is consistent
with the location of the smoke emissions

796
00:28:05,340 --> 00:28:05,350
with the location of the smoke emissions
 

797
00:28:05,350 --> 00:28:12,750
with the location of the smoke emissions
at liftoff within half a second the

798
00:28:12,750 --> 00:28:12,760
at liftoff within half a second the
 

799
00:28:12,760 --> 00:28:14,640
at liftoff within half a second the
flame had grown into a continuous and

800
00:28:14,640 --> 00:28:14,650
flame had grown into a continuous and
 

801
00:28:14,650 --> 00:28:17,279
flame had grown into a continuous and
well-defined plume at about the same

802
00:28:17,279 --> 00:28:17,289
well-defined plume at about the same
 

803
00:28:17,289 --> 00:28:19,560
well-defined plume at about the same
time telemetry showed a divergence and

804
00:28:19,560 --> 00:28:19,570
time telemetry showed a divergence and
 

805
00:28:19,570 --> 00:28:21,120
time telemetry showed a divergence and
chamber pressures between the right and

806
00:28:21,120 --> 00:28:21,130
chamber pressures between the right and
 

807
00:28:21,130 --> 00:28:24,390
chamber pressures between the right and
left SRBs pressure in the right SRB

808
00:28:24,390 --> 00:28:24,400
left SRBs pressure in the right SRB
 

809
00:28:24,400 --> 00:28:26,340
left SRBs pressure in the right SRB
chamber was lower as a result of the

810
00:28:26,340 --> 00:28:26,350
chamber was lower as a result of the
 

811
00:28:26,350 --> 00:28:30,180
chamber was lower as a result of the
growing leak the plume is seen here in

812
00:28:30,180 --> 00:28:30,190
growing leak the plume is seen here in
 

813
00:28:30,190 --> 00:28:32,070
growing leak the plume is seen here in
pinching directly onto the surface of

814
00:28:32,070 --> 00:28:32,080
pinching directly onto the surface of
 

815
00:28:32,080 --> 00:28:33,840
pinching directly onto the surface of
the external tank and the lower aft

816
00:28:33,840 --> 00:28:33,850
the external tank and the lower aft
 

817
00:28:33,850 --> 00:28:35,970
the external tank and the lower aft
strut at sixty point two four eight

818
00:28:35,970 --> 00:28:35,980
strut at sixty point two four eight
 

819
00:28:35,980 --> 00:28:39,840
strut at sixty point two four eight
seconds at about sixty two seconds the

820
00:28:39,840 --> 00:28:39,850
seconds at about sixty two seconds the
 

821
00:28:39,850 --> 00:28:42,149
seconds at about sixty two seconds the
control system elements began to respond

822
00:28:42,149 --> 00:28:42,159
control system elements began to respond
 

823
00:28:42,159 --> 00:28:48,200
control system elements began to respond
to the forces caused by the plume as

824
00:28:48,200 --> 00:28:48,210

 

825
00:28:48,210 --> 00:28:52,020

recorded on e 207 and E 204 the first

826
00:28:52,020 --> 00:28:52,030
recorded on e 207 and E 204 the first
 

827
00:28:52,030 --> 00:28:53,909
recorded on e 207 and E 204 the first
visual indication that the anomalous

828
00:28:53,909 --> 00:28:53,919
visual indication that the anomalous
 

829
00:28:53,919 --> 00:28:56,039
visual indication that the anomalous
plume penetrated the external tank was

830
00:28:56,039 --> 00:28:56,049
plume penetrated the external tank was
 

831
00:28:56,049 --> 00:28:58,560
plume penetrated the external tank was
seen at sixty four point six six seconds

832
00:28:58,560 --> 00:28:58,570
seen at sixty four point six six seconds
 

833
00:28:58,570 --> 00:29:00,360
seen at sixty four point six six seconds
as an abrupt change in the shape and

834
00:29:00,360 --> 00:29:00,370
as an abrupt change in the shape and
 

835
00:29:00,370 --> 00:29:03,390
as an abrupt change in the shape and
color of the plume this is an indication

836
00:29:03,390 --> 00:29:03,400
color of the plume this is an indication
 

837
00:29:03,400 --> 00:29:05,310
color of the plume this is an indication
of hydrogen leaking from the external

838
00:29:05,310 --> 00:29:05,320
of hydrogen leaking from the external
 

839
00:29:05,320 --> 00:29:09,610
of hydrogen leaking from the external
tank

840
00:29:09,610 --> 00:29:09,620

 

841
00:29:09,620 --> 00:29:12,520

at sixty four point seven oh five

842
00:29:12,520 --> 00:29:12,530
at sixty four point seven oh five
 

843
00:29:12,530 --> 00:29:14,560
at sixty four point seven oh five
seconds a bright sustained glow

844
00:29:14,560 --> 00:29:14,570
seconds a bright sustained glow
 

845
00:29:14,570 --> 00:29:16,420
seconds a bright sustained glow
developed between the orbiter and the

846
00:29:16,420 --> 00:29:16,430
developed between the orbiter and the
 

847
00:29:16,430 --> 00:29:21,790
developed between the orbiter and the
external tank slight changes in the

848
00:29:21,790 --> 00:29:21,800
external tank slight changes in the
 

849
00:29:21,800 --> 00:29:23,620
external tank slight changes in the
hydrogen tank pressure telemetry data

850
00:29:23,620 --> 00:29:23,630
hydrogen tank pressure telemetry data
 

851
00:29:23,630 --> 00:29:25,930
hydrogen tank pressure telemetry data
confirmed the leak two point two seconds

852
00:29:25,930 --> 00:29:25,940
confirmed the leak two point two seconds
 

853
00:29:25,940 --> 00:29:28,210
confirmed the leak two point two seconds
later at sixty six point eight seconds

854
00:29:28,210 --> 00:29:28,220
later at sixty six point eight seconds
 

855
00:29:28,220 --> 00:29:29,950
later at sixty six point eight seconds
when the LH two tank pressurization

856
00:29:29,950 --> 00:29:29,960
when the LH two tank pressurization
 

857
00:29:29,960 --> 00:29:32,200
when the LH two tank pressurization
system could no longer maintain its

858
00:29:32,200 --> 00:29:32,210
system could no longer maintain its
 

859
00:29:32,210 --> 00:29:34,870
system could no longer maintain its
normal repressurization rate at seventy

860
00:29:34,870 --> 00:29:34,880
normal repressurization rate at seventy
 

861
00:29:34,880 --> 00:29:37,210
normal repressurization rate at seventy
two point six seconds the LH to tank

862
00:29:37,210 --> 00:29:37,220
two point six seconds the LH to tank
 

863
00:29:37,220 --> 00:29:39,030
two point six seconds the LH to tank
pressure could no longer be maintained

864
00:29:39,030 --> 00:29:39,040
pressure could no longer be maintained
 

865
00:29:39,040 --> 00:29:40,960
pressure could no longer be maintained
indicating that the leak path had

866
00:29:40,960 --> 00:29:40,970
indicating that the leak path had
 

867
00:29:40,970 --> 00:29:42,940
indicating that the leak path had
significantly increased and was growing

868
00:29:42,940 --> 00:29:42,950
significantly increased and was growing
 

869
00:29:42,950 --> 00:29:47,320
significantly increased and was growing
rapidly at seventy two point two seconds

870
00:29:47,320 --> 00:29:47,330
rapidly at seventy two point two seconds
 

871
00:29:47,330 --> 00:29:49,150
rapidly at seventy two point two seconds
the guidance system showed that right

872
00:29:49,150 --> 00:29:49,160
the guidance system showed that right
 

873
00:29:49,160 --> 00:29:51,640
the guidance system showed that right
SRB motion diverged from the orbiter and

874
00:29:51,640 --> 00:29:51,650
SRB motion diverged from the orbiter and
 

875
00:29:51,650 --> 00:29:54,520
SRB motion diverged from the orbiter and
left SRB indicating that the lower ET

876
00:29:54,520 --> 00:29:54,530
left SRB indicating that the lower ET
 

877
00:29:54,530 --> 00:29:59,580
left SRB indicating that the lower ET
SRB strut was severed or pulled loose

878
00:29:59,580 --> 00:29:59,590

 

879
00:29:59,590 --> 00:30:02,500

during this timeframe exaggerated

880
00:30:02,500 --> 00:30:02,510
during this timeframe exaggerated
 

881
00:30:02,510 --> 00:30:04,299
during this timeframe exaggerated
steering commands and control system

882
00:30:04,299 --> 00:30:04,309
steering commands and control system
 

883
00:30:04,309 --> 00:30:06,250
steering commands and control system
responses registered in telemetry data

884
00:30:06,250 --> 00:30:06,260
responses registered in telemetry data
 

885
00:30:06,260 --> 00:30:11,200
responses registered in telemetry data
and approximately 73 seconds both liquid

886
00:30:11,200 --> 00:30:11,210
and approximately 73 seconds both liquid
 

887
00:30:11,210 --> 00:30:13,270
and approximately 73 seconds both liquid
hydrogen and liquid oxygen pressure to

888
00:30:13,270 --> 00:30:13,280
hydrogen and liquid oxygen pressure to
 

889
00:30:13,280 --> 00:30:15,220
hydrogen and liquid oxygen pressure to
the main engines showed a significant

890
00:30:15,220 --> 00:30:15,230
the main engines showed a significant
 

891
00:30:15,230 --> 00:30:18,280
the main engines showed a significant
drop this was followed at seventy three

892
00:30:18,280 --> 00:30:18,290
drop this was followed at seventy three
 

893
00:30:18,290 --> 00:30:20,169
drop this was followed at seventy three
point one to four seconds by the

894
00:30:20,169 --> 00:30:20,179
point one to four seconds by the
 

895
00:30:20,179 --> 00:30:22,090
point one to four seconds by the
appearance of a circumferential white

896
00:30:22,090 --> 00:30:22,100
appearance of a circumferential white
 

897
00:30:22,100 --> 00:30:24,030
appearance of a circumferential white
pattern around the ET aft region

898
00:30:24,030 --> 00:30:24,040
pattern around the ET aft region
 

899
00:30:24,040 --> 00:30:28,290
pattern around the ET aft region
suggesting LH to tank structural failure

900
00:30:28,290 --> 00:30:28,300
suggesting LH to tank structural failure
 

901
00:30:28,300 --> 00:30:31,450
suggesting LH to tank structural failure
13 milliseconds later at seventy three

902
00:30:31,450 --> 00:30:31,460
13 milliseconds later at seventy three
 

903
00:30:31,460 --> 00:30:33,820
13 milliseconds later at seventy three
point one three seven seconds vapor was

904
00:30:33,820 --> 00:30:33,830
point one three seven seconds vapor was
 

905
00:30:33,830 --> 00:30:36,130
point one three seven seconds vapor was
observed at the inner tank indicative of

906
00:30:36,130 --> 00:30:36,140
observed at the inner tank indicative of
 

907
00:30:36,140 --> 00:30:38,890
observed at the inner tank indicative of
the liquid oxygen tank failing this can

908
00:30:38,890 --> 00:30:38,900
the liquid oxygen tank failing this can
 

909
00:30:38,900 --> 00:30:40,570
the liquid oxygen tank failing this can
be attributed to have normal loads

910
00:30:40,570 --> 00:30:40,580
be attributed to have normal loads
 

911
00:30:40,580 --> 00:30:43,240
be attributed to have normal loads
induced by either the right SRB rotation

912
00:30:43,240 --> 00:30:43,250
induced by either the right SRB rotation
 

913
00:30:43,250 --> 00:30:45,340
induced by either the right SRB rotation
at the forward attach point or the

914
00:30:45,340 --> 00:30:45,350
at the forward attach point or the
 

915
00:30:45,350 --> 00:30:47,650
at the forward attach point or the
propulsive forces created by the yell h2

916
00:30:47,650 --> 00:30:47,660
propulsive forces created by the yell h2
 

917
00:30:47,660 --> 00:30:52,830
propulsive forces created by the yell h2
tank aft bulkhead failure probably both

918
00:30:52,830 --> 00:30:52,840

 

919
00:30:52,840 --> 00:30:55,960

within milliseconds liquid oxygen was

920
00:30:55,960 --> 00:30:55,970
within milliseconds liquid oxygen was
 

921
00:30:55,970 --> 00:30:57,850
within milliseconds liquid oxygen was
observed streaming along the external

922
00:30:57,850 --> 00:30:57,860
observed streaming along the external
 

923
00:30:57,860 --> 00:31:03,040
observed streaming along the external
tank at seventy three point one nine one

924
00:31:03,040 --> 00:31:03,050
tank at seventy three point one nine one
 

925
00:31:03,050 --> 00:31:05,890
tank at seventy three point one nine one
seconds a flash was observed between the

926
00:31:05,890 --> 00:31:05,900
seconds a flash was observed between the
 

927
00:31:05,900 --> 00:31:07,960
seconds a flash was observed between the
ET and orbiter that was immediately

928
00:31:07,960 --> 00:31:07,970
ET and orbiter that was immediately
 

929
00:31:07,970 --> 00:31:10,120
ET and orbiter that was immediately
followed by the start of total vehicle

930
00:31:10,120 --> 00:31:10,130
followed by the start of total vehicle
 

931
00:31:10,130 --> 00:31:12,340
followed by the start of total vehicle
breakup at seventy three point two one

932
00:31:12,340 --> 00:31:12,350
breakup at seventy three point two one
 

933
00:31:12,350 --> 00:31:16,450
breakup at seventy three point two one
three seconds during the next 100

934
00:31:16,450 --> 00:31:16,460
three seconds during the next 100
 

935
00:31:16,460 --> 00:31:19,000
three seconds during the next 100
milliseconds additional flashes occur in

936
00:31:19,000 --> 00:31:19,010
milliseconds additional flashes occur in
 

937
00:31:19,010 --> 00:31:22,960
milliseconds additional flashes occur in
the SRB forward attach area as the ET

938
00:31:22,960 --> 00:31:22,970
the SRB forward attach area as the ET
 

939
00:31:22,970 --> 00:31:23,379
the SRB forward attach area as the ET
broke

940
00:31:23,379 --> 00:31:23,389
broke
 

941
00:31:23,389 --> 00:31:25,899
broke
the released fluids vaporized rapidly

942
00:31:25,899 --> 00:31:25,909
the released fluids vaporized rapidly
 

943
00:31:25,909 --> 00:31:28,239
the released fluids vaporized rapidly
producing an expanding cloud of gases

944
00:31:28,239 --> 00:31:28,249
producing an expanding cloud of gases
 

945
00:31:28,249 --> 00:31:31,119
producing an expanding cloud of gases
vapors and cryogenic fluid with embedded

946
00:31:31,119 --> 00:31:31,129
vapors and cryogenic fluid with embedded
 

947
00:31:31,129 --> 00:31:33,459
vapors and cryogenic fluid with embedded
debris and localized combustion of mixed

948
00:31:33,459 --> 00:31:33,469
debris and localized combustion of mixed
 

949
00:31:33,469 --> 00:31:36,940
debris and localized combustion of mixed
gases no shockwave or other evidence of

950
00:31:36,940 --> 00:31:36,950
gases no shockwave or other evidence of
 

951
00:31:36,950 --> 00:31:38,949
gases no shockwave or other evidence of
a violent explosion was detected in the

952
00:31:38,949 --> 00:31:38,959
a violent explosion was detected in the
 

953
00:31:38,959 --> 00:31:41,680
a violent explosion was detected in the
imagery illumination from a combination

954
00:31:41,680 --> 00:31:41,690
imagery illumination from a combination
 

955
00:31:41,690 --> 00:31:44,619
imagery illumination from a combination
of SRB plume radiance reflected sunlight

956
00:31:44,619 --> 00:31:44,629
of SRB plume radiance reflected sunlight
 

957
00:31:44,629 --> 00:31:46,869
of SRB plume radiance reflected sunlight
and peripheral burning of gases gives

958
00:31:46,869 --> 00:31:46,879
and peripheral burning of gases gives
 

959
00:31:46,879 --> 00:31:49,589
and peripheral burning of gases gives
the cloud the appearance of a fireball

960
00:31:49,589 --> 00:31:49,599
the cloud the appearance of a fireball
 

961
00:31:49,599 --> 00:31:52,690
the cloud the appearance of a fireball
by seventy three point six seconds the

962
00:31:52,690 --> 00:31:52,700
by seventy three point six seconds the
 

963
00:31:52,700 --> 00:31:54,489
by seventy three point six seconds the
main engines were in automatic shutdown

964
00:31:54,489 --> 00:31:54,499
main engines were in automatic shutdown
 

965
00:31:54,499 --> 00:31:56,680
main engines were in automatic shutdown
mode as a result of reduced propellant

966
00:31:56,680 --> 00:31:56,690
mode as a result of reduced propellant
 

967
00:31:56,690 --> 00:31:59,440
mode as a result of reduced propellant
pressures the last telemetry from

968
00:31:59,440 --> 00:31:59,450
pressures the last telemetry from
 

969
00:31:59,450 --> 00:32:01,419
pressures the last telemetry from
challenger was received seventy three

970
00:32:01,419 --> 00:32:01,429
challenger was received seventy three
 

971
00:32:01,429 --> 00:32:06,119
challenger was received seventy three
point six one eight seconds after launch

972
00:32:06,119 --> 00:32:06,129

 

973
00:32:06,129 --> 00:32:08,709

the actual vehicle breakup was

974
00:32:08,709 --> 00:32:08,719
the actual vehicle breakup was
 

975
00:32:08,719 --> 00:32:10,629
the actual vehicle breakup was
essentially obscured from view by the

976
00:32:10,629 --> 00:32:10,639
essentially obscured from view by the
 

977
00:32:10,639 --> 00:32:12,940
essentially obscured from view by the
vapor cloud which abruptly enveloped the

978
00:32:12,940 --> 00:32:12,950
vapor cloud which abruptly enveloped the
 

979
00:32:12,950 --> 00:32:15,789
vapor cloud which abruptly enveloped the
vehicle hundreds of fragments were noted

980
00:32:15,789 --> 00:32:15,799
vehicle hundreds of fragments were noted
 

981
00:32:15,799 --> 00:32:19,209
vehicle hundreds of fragments were noted
exiting the et cloud those identified

982
00:32:19,209 --> 00:32:19,219
exiting the et cloud those identified
 

983
00:32:19,219 --> 00:32:21,219
exiting the et cloud those identified
included the shuttle main engines the

984
00:32:21,219 --> 00:32:21,229
included the shuttle main engines the
 

985
00:32:21,229 --> 00:32:26,699
included the shuttle main engines the
left wing crew cabin and both SRBs

986
00:32:26,699 --> 00:32:26,709

 

987
00:32:26,709 --> 00:32:29,049

approximately one second after initial

988
00:32:29,049 --> 00:32:29,059
approximately one second after initial
 

989
00:32:29,059 --> 00:32:31,239
approximately one second after initial
breakup film showed the front segment of

990
00:32:31,239 --> 00:32:31,249
breakup film showed the front segment of
 

991
00:32:31,249 --> 00:32:33,879
breakup film showed the front segment of
the orbiter emerging from the cloud the

992
00:32:33,879 --> 00:32:33,889
the orbiter emerging from the cloud the
 

993
00:32:33,889 --> 00:32:36,369
the orbiter emerging from the cloud the
nose crew cabin and a portion of the

994
00:32:36,369 --> 00:32:36,379
nose crew cabin and a portion of the
 

995
00:32:36,379 --> 00:32:38,440
nose crew cabin and a portion of the
cargo bay make up the orbiter in this

996
00:32:38,440 --> 00:32:38,450
cargo bay make up the orbiter in this
 

997
00:32:38,450 --> 00:32:42,940
cargo bay make up the orbiter in this
view nitrogen tetroxide oxidizer from

998
00:32:42,940 --> 00:32:42,950
view nitrogen tetroxide oxidizer from
 

999
00:32:42,950 --> 00:32:44,799
view nitrogen tetroxide oxidizer from
the forward reaction control system

1000
00:32:44,799 --> 00:32:44,809
the forward reaction control system
 

1001
00:32:44,809 --> 00:32:46,599
the forward reaction control system
provided a distinctive orange brown

1002
00:32:46,599 --> 00:32:46,609
provided a distinctive orange brown
 

1003
00:32:46,609 --> 00:32:51,219
provided a distinctive orange brown
color to the cloud by seventy four point

1004
00:32:51,219 --> 00:32:51,229
color to the cloud by seventy four point
 

1005
00:32:51,229 --> 00:32:53,379
color to the cloud by seventy four point
five seven eight seconds a yellow cloud

1006
00:32:53,379 --> 00:32:53,389
five seven eight seconds a yellow cloud
 

1007
00:32:53,389 --> 00:32:55,599
five seven eight seconds a yellow cloud
or flash was visible near the orbiter

1008
00:32:55,599 --> 00:32:55,609
or flash was visible near the orbiter
 

1009
00:32:55,609 --> 00:32:58,180
or flash was visible near the orbiter
nose segment this is believed to be

1010
00:32:58,180 --> 00:32:58,190
nose segment this is believed to be
 

1011
00:32:58,190 --> 00:32:59,739
nose segment this is believed to be
caused by burning monomethylhydrazine

1012
00:32:59,739 --> 00:32:59,749
caused by burning monomethylhydrazine
 

1013
00:32:59,749 --> 00:33:06,489
caused by burning monomethylhydrazine
from the forward RCS the flash reaction

1014
00:33:06,489 --> 00:33:06,499
from the forward RCS the flash reaction
 

1015
00:33:06,499 --> 00:33:08,289
from the forward RCS the flash reaction
from the RCS propellant sub aided

1016
00:33:08,289 --> 00:33:08,299
from the RCS propellant sub aided
 

1017
00:33:08,299 --> 00:33:10,479
from the RCS propellant sub aided
revealing separation of the nose section

1018
00:33:10,479 --> 00:33:10,489
revealing separation of the nose section
 

1019
00:33:10,489 --> 00:33:13,149
revealing separation of the nose section
from the crew cabin less than a quarter

1020
00:33:13,149 --> 00:33:13,159
from the crew cabin less than a quarter
 

1021
00:33:13,159 --> 00:33:15,009
from the crew cabin less than a quarter
of a second later the crew cabin was

1022
00:33:15,009 --> 00:33:15,019
of a second later the crew cabin was
 

1023
00:33:15,019 --> 00:33:18,089
of a second later the crew cabin was
noted to be severed from the cargo bay

1024
00:33:18,089 --> 00:33:18,099
noted to be severed from the cargo bay
 

1025
00:33:18,099 --> 00:33:20,199
noted to be severed from the cargo bay
igniting a propellant discharge

1026
00:33:20,199 --> 00:33:20,209
igniting a propellant discharge
 

1027
00:33:20,209 --> 00:33:21,819
igniting a propellant discharge
continued to be observed from the

1028
00:33:21,819 --> 00:33:21,829
continued to be observed from the
 

1029
00:33:21,829 --> 00:33:32,320
continued to be observed from the
forward RCS

1030
00:33:32,320 --> 00:33:32,330

 

1031
00:33:32,330 --> 00:33:34,600

a camera south of the launch pad

1032
00:33:34,600 --> 00:33:34,610
a camera south of the launch pad
 

1033
00:33:34,610 --> 00:33:36,970
a camera south of the launch pad
recorded a wider array of debris exiting

1034
00:33:36,970 --> 00:33:36,980
recorded a wider array of debris exiting
 

1035
00:33:36,980 --> 00:33:44,259
recorded a wider array of debris exiting
the vapor cloud the initial emergence of

1036
00:33:44,259 --> 00:33:44,269
the vapor cloud the initial emergence of
 

1037
00:33:44,269 --> 00:33:46,210
the vapor cloud the initial emergence of
the crew cabin from this perspective was

1038
00:33:46,210 --> 00:33:46,220
the crew cabin from this perspective was
 

1039
00:33:46,220 --> 00:33:48,100
the crew cabin from this perspective was
at seventy five point two three seven

1040
00:33:48,100 --> 00:33:48,110
at seventy five point two three seven
 

1041
00:33:48,110 --> 00:33:55,930
at seventy five point two three seven
seconds the initial path of the crew

1042
00:33:55,930 --> 00:33:55,940
seconds the initial path of the crew
 

1043
00:33:55,940 --> 00:33:57,759
seconds the initial path of the crew
cabin from the vapor cloud carried it

1044
00:33:57,759 --> 00:33:57,769
cabin from the vapor cloud carried it
 

1045
00:33:57,769 --> 00:33:59,889
cabin from the vapor cloud carried it
across the path of an adjacent contrail

1046
00:33:59,889 --> 00:33:59,899
across the path of an adjacent contrail
 

1047
00:33:59,899 --> 00:34:02,440
across the path of an adjacent contrail
clearly revealing its truncated form and

1048
00:34:02,440 --> 00:34:02,450
clearly revealing its truncated form and
 

1049
00:34:02,450 --> 00:34:09,820
clearly revealing its truncated form and
attitude the left wing became visible at

1050
00:34:09,820 --> 00:34:09,830
attitude the left wing became visible at
 

1051
00:34:09,830 --> 00:34:11,290
attitude the left wing became visible at
seventy eight point five three one

1052
00:34:11,290 --> 00:34:11,300
seventy eight point five three one
 

1053
00:34:11,300 --> 00:34:15,159
seventy eight point five three one
seconds the main engines and crew cabin

1054
00:34:15,159 --> 00:34:15,169
seconds the main engines and crew cabin
 

1055
00:34:15,169 --> 00:34:19,389
seconds the main engines and crew cabin
are also identifiable after ten seconds

1056
00:34:19,389 --> 00:34:19,399
are also identifiable after ten seconds
 

1057
00:34:19,399 --> 00:34:21,399
are also identifiable after ten seconds
the crew cabin was seen again with the

1058
00:34:21,399 --> 00:34:21,409
the crew cabin was seen again with the
 

1059
00:34:21,409 --> 00:34:23,589
the crew cabin was seen again with the
front end and top of the cabin visible

1060
00:34:23,589 --> 00:34:23,599
front end and top of the cabin visible
 

1061
00:34:23,599 --> 00:34:27,369
front end and top of the cabin visible
as the subject moved further away and

1062
00:34:27,369 --> 00:34:27,379
as the subject moved further away and
 

1063
00:34:27,379 --> 00:34:29,710
as the subject moved further away and
dropped lower on the horizon the quality

1064
00:34:29,710 --> 00:34:29,720
dropped lower on the horizon the quality
 

1065
00:34:29,720 --> 00:34:31,480
dropped lower on the horizon the quality
of the image for visual analysis

1066
00:34:31,480 --> 00:34:31,490
of the image for visual analysis
 

1067
00:34:31,490 --> 00:34:37,690
of the image for visual analysis
deteriorated rapidly long-range tracking

1068
00:34:37,690 --> 00:34:37,700
deteriorated rapidly long-range tracking
 

1069
00:34:37,700 --> 00:34:40,060
deteriorated rapidly long-range tracking
cameras followed the SRBs through Range

1070
00:34:40,060 --> 00:34:40,070
cameras followed the SRBs through Range
 

1071
00:34:40,070 --> 00:34:43,389
cameras followed the SRBs through Range
Safety destruct at approximately seventy

1072
00:34:43,389 --> 00:34:43,399
Safety destruct at approximately seventy
 

1073
00:34:43,399 --> 00:34:45,730
Safety destruct at approximately seventy
five point eight seconds the right SRB

1074
00:34:45,730 --> 00:34:45,740
five point eight seconds the right SRB
 

1075
00:34:45,740 --> 00:34:49,329
five point eight seconds the right SRB
was seen exiting the cloud camera E to O

1076
00:34:49,329 --> 00:34:49,339
was seen exiting the cloud camera E to O
 

1077
00:34:49,339 --> 00:34:51,669
was seen exiting the cloud camera E to O
seven shows the right SRB after the

1078
00:34:51,669 --> 00:34:51,679
seven shows the right SRB after the
 

1079
00:34:51,679 --> 00:34:53,470
seven shows the right SRB after the
breakup and the joints are clearly

1080
00:34:53,470 --> 00:34:53,480
breakup and the joints are clearly
 

1081
00:34:53,480 --> 00:34:58,890
breakup and the joints are clearly
visible except for the aft field joint

1082
00:34:58,890 --> 00:34:58,900

 

1083
00:34:58,900 --> 00:35:01,630

this confirmed the location of the plume

1084
00:35:01,630 --> 00:35:01,640
this confirmed the location of the plume
 

1085
00:35:01,640 --> 00:35:07,320
this confirmed the location of the plume
along the longitudinal axis of the SRB

1086
00:35:07,320 --> 00:35:07,330

 

1087
00:35:07,330 --> 00:35:10,060

the separated nose cap and deployed

1088
00:35:10,060 --> 00:35:10,070
the separated nose cap and deployed
 

1089
00:35:10,070 --> 00:35:11,890
the separated nose cap and deployed
drogue parachute are identified at

1090
00:35:11,890 --> 00:35:11,900
drogue parachute are identified at
 

1091
00:35:11,900 --> 00:35:13,839
drogue parachute are identified at
approximately seventy six point four

1092
00:35:13,839 --> 00:35:13,849
approximately seventy six point four
 

1093
00:35:13,849 --> 00:35:23,370
approximately seventy six point four
seconds

1094
00:35:23,370 --> 00:35:23,380

 

1095
00:35:23,380 --> 00:35:25,680

the shockwave from the detonation of the

1096
00:35:25,680 --> 00:35:25,690
the shockwave from the detonation of the
 

1097
00:35:25,690 --> 00:35:27,750
the shockwave from the detonation of the
linear shaped charge on the right SRB

1098
00:35:27,750 --> 00:35:27,760
linear shaped charge on the right SRB
 

1099
00:35:27,760 --> 00:35:34,350
linear shaped charge on the right SRB
can be seen clearly simultaneously the

1100
00:35:34,350 --> 00:35:34,360
can be seen clearly simultaneously the
 

1101
00:35:34,360 --> 00:35:42,210
can be seen clearly simultaneously the
left SRB was destroyed at approximately

1102
00:35:42,210 --> 00:35:42,220
left SRB was destroyed at approximately
 

1103
00:35:42,220 --> 00:35:44,760
left SRB was destroyed at approximately
37 seconds challenger had encountered

1104
00:35:44,760 --> 00:35:44,770
37 seconds challenger had encountered
 

1105
00:35:44,770 --> 00:35:46,590
37 seconds challenger had encountered
the first of several expected high

1106
00:35:46,590 --> 00:35:46,600
the first of several expected high
 

1107
00:35:46,600 --> 00:35:48,780
the first of several expected high
altitude wind shear conditions which

1108
00:35:48,780 --> 00:35:48,790
altitude wind shear conditions which
 

1109
00:35:48,790 --> 00:35:53,460
altitude wind shear conditions which
lasted until about 64 seconds these wind

1110
00:35:53,460 --> 00:35:53,470
lasted until about 64 seconds these wind
 

1111
00:35:53,470 --> 00:35:55,110
lasted until about 64 seconds these wind
shears are best illustrated by the

1112
00:35:55,110 --> 00:35:55,120
shears are best illustrated by the
 

1113
00:35:55,120 --> 00:35:58,530
shears are best illustrated by the
effect on the booster exhaust trails the

1114
00:35:58,530 --> 00:35:58,540
effect on the booster exhaust trails the
 

1115
00:35:58,540 --> 00:36:00,540
effect on the booster exhaust trails the
effect of wind shear was immediately

1116
00:36:00,540 --> 00:36:00,550
effect of wind shear was immediately
 

1117
00:36:00,550 --> 00:36:02,250
effect of wind shear was immediately
sensed and countered by the guidance

1118
00:36:02,250 --> 00:36:02,260
sensed and countered by the guidance
 

1119
00:36:02,260 --> 00:36:06,120
sensed and countered by the guidance
navigation and control system wind

1120
00:36:06,120 --> 00:36:06,130
navigation and control system wind
 

1121
00:36:06,130 --> 00:36:08,280
navigation and control system wind
reconstructions were aided by comparing

1122
00:36:08,280 --> 00:36:08,290
reconstructions were aided by comparing
 

1123
00:36:08,290 --> 00:36:10,140
reconstructions were aided by comparing
predicted exhaust trail shapes with

1124
00:36:10,140 --> 00:36:10,150
predicted exhaust trail shapes with
 

1125
00:36:10,150 --> 00:36:13,050
predicted exhaust trail shapes with
acquired photography the reconstructed

1126
00:36:13,050 --> 00:36:13,060
acquired photography the reconstructed
 

1127
00:36:13,060 --> 00:36:15,150
acquired photography the reconstructed
winds were used in trajectory and flight

1128
00:36:15,150 --> 00:36:15,160
winds were used in trajectory and flight
 

1129
00:36:15,160 --> 00:36:17,550
winds were used in trajectory and flight
loads analyses which verified that the

1130
00:36:17,550 --> 00:36:17,560
loads analyses which verified that the
 

1131
00:36:17,560 --> 00:36:22,370
loads analyses which verified that the
loads were within limits

1132
00:36:22,370 --> 00:36:22,380

 

1133
00:36:22,380 --> 00:36:25,470

several flashes and yes any plumes were

1134
00:36:25,470 --> 00:36:25,480
several flashes and yes any plumes were
 

1135
00:36:25,480 --> 00:36:29,760
several flashes and yes any plumes were
observed during the flight as similar

1136
00:36:29,760 --> 00:36:29,770
observed during the flight as similar
 

1137
00:36:29,770 --> 00:36:32,610
observed during the flight as similar
life is a mysterious light these are

1138
00:36:32,610 --> 00:36:32,620
life is a mysterious light these are
 

1139
00:36:32,620 --> 00:36:34,380
life is a mysterious light these are
considered NASA to have not tribute into

1140
00:36:34,380 --> 00:36:34,390
considered NASA to have not tribute into
 

1141
00:36:34,390 --> 00:36:37,980
considered NASA to have not tribute into
the acts of the accident the visible

1142
00:36:37,980 --> 00:36:37,990
the acts of the accident the visible
 

1143
00:36:37,990 --> 00:36:40,050
the acts of the accident the visible
condensation that appears in this frame

1144
00:36:40,050 --> 00:36:40,060
condensation that appears in this frame
 

1145
00:36:40,060 --> 00:36:42,300
condensation that appears in this frame
is created by shockwaves which develop

1146
00:36:42,300 --> 00:36:42,310
is created by shockwaves which develop
 

1147
00:36:42,310 --> 00:36:44,130
is created by shockwaves which develop
as the vehicle passes through the speed

1148
00:36:44,130 --> 00:36:44,140
as the vehicle passes through the speed
 

1149
00:36:44,140 --> 00:36:53,280
as the vehicle passes through the speed
of sound

1150
00:36:53,280 --> 00:36:53,290

 

1151
00:36:53,290 --> 00:36:55,620

a large-scale search effort was

1152
00:36:55,620 --> 00:36:55,630
a large-scale search effort was
 

1153
00:36:55,630 --> 00:36:57,600
a large-scale search effort was
initiated to recover the space shuttle

1154
00:36:57,600 --> 00:36:57,610
initiated to recover the space shuttle
 

1155
00:36:57,610 --> 00:37:02,130
initiated to recover the space shuttle
debris 22 ships six underwater search

1156
00:37:02,130 --> 00:37:02,140
debris 22 ships six underwater search
 

1157
00:37:02,140 --> 00:37:06,090
debris 22 ships six underwater search
vessels and 33 aircraft participated in

1158
00:37:06,090 --> 00:37:06,100
vessels and 33 aircraft participated in
 

1159
00:37:06,100 --> 00:37:11,070
vessels and 33 aircraft participated in
the operation the pieces recovered

1160
00:37:11,070 --> 00:37:11,080
the operation the pieces recovered
 

1161
00:37:11,080 --> 00:37:12,930
the operation the pieces recovered
initially were those found floating on

1162
00:37:12,930 --> 00:37:12,940
initially were those found floating on
 

1163
00:37:12,940 --> 00:37:20,370
initially were those found floating on
the surface the submarine fleet was used

1164
00:37:20,370 --> 00:37:20,380
the surface the submarine fleet was used
 

1165
00:37:20,380 --> 00:37:24,650
the surface the submarine fleet was used
to locate and inspect underwater debris

1166
00:37:24,650 --> 00:37:24,660

 

1167
00:37:24,660 --> 00:37:27,360

objects identified as being important to

1168
00:37:27,360 --> 00:37:27,370
objects identified as being important to
 

1169
00:37:27,370 --> 00:37:37,470
objects identified as being important to
the investigation were retrieved 50% of

1170
00:37:37,470 --> 00:37:37,480
the investigation were retrieved 50% of
 

1171
00:37:37,480 --> 00:37:39,420
the investigation were retrieved 50% of
the entire vehicle was recovered in the

1172
00:37:39,420 --> 00:37:39,430
the entire vehicle was recovered in the
 

1173
00:37:39,430 --> 00:37:45,600
the entire vehicle was recovered in the
effort the ocean search area was located

1174
00:37:45,600 --> 00:37:45,610
effort the ocean search area was located
 

1175
00:37:45,610 --> 00:37:47,910
effort the ocean search area was located
at the edge of the Gulf Stream at depths

1176
00:37:47,910 --> 00:37:47,920
at the edge of the Gulf Stream at depths
 

1177
00:37:47,920 --> 00:37:51,420
at the edge of the Gulf Stream at depths
up to 1,200 feet approximately 93

1178
00:37:51,420 --> 00:37:51,430
up to 1,200 feet approximately 93
 

1179
00:37:51,430 --> 00:37:53,340
up to 1,200 feet approximately 93
thousand square miles of ocean were

1180
00:37:53,340 --> 00:37:53,350
thousand square miles of ocean were
 

1181
00:37:53,350 --> 00:37:58,170
thousand square miles of ocean were
searched the recovered hardware was

1182
00:37:58,170 --> 00:37:58,180
searched the recovered hardware was
 

1183
00:37:58,180 --> 00:38:00,180
searched the recovered hardware was
brought to the recovery facility where

1184
00:38:00,180 --> 00:38:00,190
brought to the recovery facility where
 

1185
00:38:00,190 --> 00:38:02,340
brought to the recovery facility where
root construction to verify the

1186
00:38:02,340 --> 00:38:02,350
root construction to verify the
 

1187
00:38:02,350 --> 00:38:06,620
root construction to verify the
investigation team's findings as well as

1188
00:38:06,620 --> 00:38:06,630
investigation team's findings as well as
 

1189
00:38:06,630 --> 00:38:12,420
investigation team's findings as well as
an order été and the survey's inside the

1190
00:38:12,420 --> 00:38:12,430
an order été and the survey's inside the
 

1191
00:38:12,430 --> 00:38:14,880
an order été and the survey's inside the
recovery facility parts were rows of

1192
00:38:14,880 --> 00:38:14,890
recovery facility parts were rows of
 

1193
00:38:14,890 --> 00:38:16,830
recovery facility parts were rows of
floral recorder to the duration of the

1194
00:38:16,830 --> 00:38:16,840
floral recorder to the duration of the
 

1195
00:38:16,840 --> 00:38:24,330
floral recorder to the duration of the
vehicle 45 percent of the orbiter itself

1196
00:38:24,330 --> 00:38:24,340
vehicle 45 percent of the orbiter itself
 

1197
00:38:24,340 --> 00:38:27,450
vehicle 45 percent of the orbiter itself
was recovered the debris confirmed that

1198
00:38:27,450 --> 00:38:27,460
was recovered the debris confirmed that
 

1199
00:38:27,460 --> 00:38:29,190
was recovered the debris confirmed that
the orbiter and its payloads did not

1200
00:38:29,190 --> 00:38:29,200
the orbiter and its payloads did not
 

1201
00:38:29,200 --> 00:38:30,600
the orbiter and its payloads did not
contribute to the cause of the accident

1202
00:38:30,600 --> 00:38:30,610
contribute to the cause of the accident
 

1203
00:38:30,610 --> 00:38:32,820
contribute to the cause of the accident
and that the orbiter breakup was a

1204
00:38:32,820 --> 00:38:32,830
and that the orbiter breakup was a
 

1205
00:38:32,830 --> 00:38:34,980
and that the orbiter breakup was a
result of aerodynamic effects rather

1206
00:38:34,980 --> 00:38:34,990
result of aerodynamic effects rather
 

1207
00:38:34,990 --> 00:38:40,110
result of aerodynamic effects rather
than explosive effects shown here are

1208
00:38:40,110 --> 00:38:40,120
than explosive effects shown here are
 

1209
00:38:40,120 --> 00:38:42,060
than explosive effects shown here are
parts of the orbiter forward fuselage

1210
00:38:42,060 --> 00:38:42,070
parts of the orbiter forward fuselage
 

1211
00:38:42,070 --> 00:38:51,150
parts of the orbiter forward fuselage
structure which surrounds the crew cabin

1212
00:38:51,150 --> 00:38:51,160

 

1213
00:38:51,160 --> 00:38:53,320

extensive heating and erosion was

1214
00:38:53,320 --> 00:38:53,330
extensive heating and erosion was
 

1215
00:38:53,330 --> 00:38:55,240
extensive heating and erosion was
detected on the right aft section of the

1216
00:38:55,240 --> 00:38:55,250
detected on the right aft section of the
 

1217
00:38:55,250 --> 00:38:59,290
detected on the right aft section of the
orbiter the paint was scorched and

1218
00:38:59,290 --> 00:38:59,300
orbiter the paint was scorched and
 

1219
00:38:59,300 --> 00:39:00,880
orbiter the paint was scorched and
blackened on the right side of the aft

1220
00:39:00,880 --> 00:39:00,890
blackened on the right side of the aft
 

1221
00:39:00,890 --> 00:39:07,540
blackened on the right side of the aft
fuselage thermal distress was apparent

1222
00:39:07,540 --> 00:39:07,550
fuselage thermal distress was apparent
 

1223
00:39:07,550 --> 00:39:10,870
fuselage thermal distress was apparent
on the right rudder speed brake while

1224
00:39:10,870 --> 00:39:10,880
on the right rudder speed brake while
 

1225
00:39:10,880 --> 00:39:17,200
on the right rudder speed brake while
the left showed little effect thermal

1226
00:39:17,200 --> 00:39:17,210
the left showed little effect thermal
 

1227
00:39:17,210 --> 00:39:25,730
the left showed little effect thermal
effects were also seen on the Elavon

1228
00:39:25,730 --> 00:39:25,740

 

1229
00:39:25,740 --> 00:39:28,160

the aft left side of the orbiter showed

1230
00:39:28,160 --> 00:39:28,170
the aft left side of the orbiter showed
 

1231
00:39:28,170 --> 00:39:35,660
the aft left side of the orbiter showed
no apparent sign of heat damage the

1232
00:39:35,660 --> 00:39:35,670
no apparent sign of heat damage the
 

1233
00:39:35,670 --> 00:39:37,609
no apparent sign of heat damage the
remaining recovered parts of the orbiter

1234
00:39:37,609 --> 00:39:37,619
remaining recovered parts of the orbiter
 

1235
00:39:37,619 --> 00:39:39,859
remaining recovered parts of the orbiter
showed no evidence of fire or explosion

1236
00:39:39,859 --> 00:39:39,869
showed no evidence of fire or explosion
 

1237
00:39:39,869 --> 00:39:45,440
showed no evidence of fire or explosion
from within the vehicle all three main

1238
00:39:45,440 --> 00:39:45,450
from within the vehicle all three main
 

1239
00:39:45,450 --> 00:39:47,329
from within the vehicle all three main
engines were recovered and helped to

1240
00:39:47,329 --> 00:39:47,339
engines were recovered and helped to
 

1241
00:39:47,339 --> 00:39:49,190
engines were recovered and helped to
verify that they did not contribute to

1242
00:39:49,190 --> 00:39:49,200
verify that they did not contribute to
 

1243
00:39:49,200 --> 00:39:57,440
verify that they did not contribute to
the cause of the accident the external

1244
00:39:57,440 --> 00:39:57,450
the cause of the accident the external
 

1245
00:39:57,450 --> 00:40:04,609
the cause of the accident the external
tank was similarly reconstructed 25% of

1246
00:40:04,609 --> 00:40:04,619
tank was similarly reconstructed 25% of
 

1247
00:40:04,619 --> 00:40:07,070
tank was similarly reconstructed 25% of
the liquid hydrogen tank 80% of the

1248
00:40:07,070 --> 00:40:07,080
the liquid hydrogen tank 80% of the
 

1249
00:40:07,080 --> 00:40:09,620
the liquid hydrogen tank 80% of the
inner tank and 5% of the liquid oxygen

1250
00:40:09,620 --> 00:40:09,630
inner tank and 5% of the liquid oxygen
 

1251
00:40:09,630 --> 00:40:17,120
inner tank and 5% of the liquid oxygen
tank was recovered most of the external

1252
00:40:17,120 --> 00:40:17,130
tank was recovered most of the external
 

1253
00:40:17,130 --> 00:40:25,700
tank was recovered most of the external
hardware was also recovered

1254
00:40:25,700 --> 00:40:25,710

 

1255
00:40:25,710 --> 00:40:28,010

the nose cap sustained very little

1256
00:40:28,010 --> 00:40:28,020
the nose cap sustained very little
 

1257
00:40:28,020 --> 00:40:33,440
the nose cap sustained very little
damage in general the recovered pieces

1258
00:40:33,440 --> 00:40:33,450
damage in general the recovered pieces
 

1259
00:40:33,450 --> 00:40:34,819
damage in general the recovered pieces
were quite large

1260
00:40:34,819 --> 00:40:34,829
were quite large
 

1261
00:40:34,829 --> 00:40:37,400
were quite large
the spray-on foam insulation exhibited

1262
00:40:37,400 --> 00:40:37,410
the spray-on foam insulation exhibited
 

1263
00:40:37,410 --> 00:40:39,530
the spray-on foam insulation exhibited
varying degrees of thermal effects from

1264
00:40:39,530 --> 00:40:39,540
varying degrees of thermal effects from
 

1265
00:40:39,540 --> 00:40:41,750
varying degrees of thermal effects from
extreme charring to practically no

1266
00:40:41,750 --> 00:40:41,760
extreme charring to practically no
 

1267
00:40:41,760 --> 00:40:49,040
extreme charring to practically no
effect the external tank range safety

1268
00:40:49,040 --> 00:40:49,050
effect the external tank range safety
 

1269
00:40:49,050 --> 00:40:51,290
effect the external tank range safety
destruct explosive charges housed in

1270
00:40:51,290 --> 00:40:51,300
destruct explosive charges housed in
 

1271
00:40:51,300 --> 00:40:52,819
destruct explosive charges housed in
this cable tray were recovered

1272
00:40:52,819 --> 00:40:52,829
this cable tray were recovered
 

1273
00:40:52,829 --> 00:40:55,670
this cable tray were recovered
undetonated eliminating them as a

1274
00:40:55,670 --> 00:40:55,680
undetonated eliminating them as a
 

1275
00:40:55,680 --> 00:40:59,349
undetonated eliminating them as a
possible factor an external tank breakup

1276
00:40:59,349 --> 00:40:59,359
possible factor an external tank breakup
 

1277
00:40:59,359 --> 00:41:02,180
possible factor an external tank breakup
the inter tank region showed signs of

1278
00:41:02,180 --> 00:41:02,190
the inter tank region showed signs of
 

1279
00:41:02,190 --> 00:41:04,220
the inter tank region showed signs of
buckling in the fore and aft direction

1280
00:41:04,220 --> 00:41:04,230
buckling in the fore and aft direction
 

1281
00:41:04,230 --> 00:41:06,410
buckling in the fore and aft direction
this would be consistent with the

1282
00:41:06,410 --> 00:41:06,420
this would be consistent with the
 

1283
00:41:06,420 --> 00:41:08,299
this would be consistent with the
impulsive thrust that resulted from the

1284
00:41:08,299 --> 00:41:08,309
impulsive thrust that resulted from the
 

1285
00:41:08,309 --> 00:41:10,099
impulsive thrust that resulted from the
sudden loss of liquid hydrogen from the

1286
00:41:10,099 --> 00:41:10,109
sudden loss of liquid hydrogen from the
 

1287
00:41:10,109 --> 00:41:15,380
sudden loss of liquid hydrogen from the
aft section of the tank this sharing

1288
00:41:15,380 --> 00:41:15,390
aft section of the tank this sharing
 

1289
00:41:15,390 --> 00:41:16,790
aft section of the tank this sharing
failure of the forward attachment

1290
00:41:16,790 --> 00:41:16,800
failure of the forward attachment
 

1291
00:41:16,800 --> 00:41:19,309
failure of the forward attachment
fitting with the right SRB was caused by

1292
00:41:19,309 --> 00:41:19,319
fitting with the right SRB was caused by
 

1293
00:41:19,319 --> 00:41:21,140
fitting with the right SRB was caused by
the boosters rotation after the aft

1294
00:41:21,140 --> 00:41:21,150
the boosters rotation after the aft
 

1295
00:41:21,150 --> 00:41:30,250
the boosters rotation after the aft
strut area failed

1296
00:41:30,250 --> 00:41:30,260

 

1297
00:41:30,260 --> 00:41:32,140

the stiffener stringers on the

1298
00:41:32,140 --> 00:41:32,150
the stiffener stringers on the
 

1299
00:41:32,150 --> 00:41:33,849
the stiffener stringers on the
right-hand side of the inner tank show

1300
00:41:33,849 --> 00:41:33,859
right-hand side of the inner tank show
 

1301
00:41:33,859 --> 00:41:36,040
right-hand side of the inner tank show
evidence of contact which match marks on

1302
00:41:36,040 --> 00:41:36,050
evidence of contact which match marks on
 

1303
00:41:36,050 --> 00:41:44,700
evidence of contact which match marks on
the forward assembly of the right SRB a

1304
00:41:44,700 --> 00:41:44,710

 

1305
00:41:44,710 --> 00:41:47,230

section of the ring frame and a section

1306
00:41:47,230 --> 00:41:47,240
section of the ring frame and a section
 

1307
00:41:47,240 --> 00:41:48,880
section of the ring frame and a section
of the a film from the lower strut

1308
00:41:48,880 --> 00:41:48,890
of the a film from the lower strut
 

1309
00:41:48,890 --> 00:41:50,800
of the a film from the lower strut
attachment area was recovered in one

1310
00:41:50,800 --> 00:41:50,810
attachment area was recovered in one
 

1311
00:41:50,810 --> 00:41:53,440
attachment area was recovered in one
piece the lower strut attachment fitting

1312
00:41:53,440 --> 00:41:53,450
piece the lower strut attachment fitting
 

1313
00:41:53,450 --> 00:41:58,599
piece the lower strut attachment fitting
had been pulled away the effects of the

1314
00:41:58,599 --> 00:41:58,609
had been pulled away the effects of the
 

1315
00:41:58,609 --> 00:42:00,940
had been pulled away the effects of the
anomalous SRB plume can be seen on the

1316
00:42:00,940 --> 00:42:00,950
anomalous SRB plume can be seen on the
 

1317
00:42:00,950 --> 00:42:03,099
anomalous SRB plume can be seen on the
external tank excluding an area which

1318
00:42:03,099 --> 00:42:03,109
external tank excluding an area which
 

1319
00:42:03,109 --> 00:42:05,170
external tank excluding an area which
was shielded by the strut and attachment

1320
00:42:05,170 --> 00:42:05,180
was shielded by the strut and attachment
 

1321
00:42:05,180 --> 00:42:10,960
was shielded by the strut and attachment
fitting approximately 50% of solid

1322
00:42:10,960 --> 00:42:10,970
fitting approximately 50% of solid
 

1323
00:42:10,970 --> 00:42:13,060
fitting approximately 50% of solid
rocket booster Hardware was recovered an

1324
00:42:13,060 --> 00:42:13,070
rocket booster Hardware was recovered an
 

1325
00:42:13,070 --> 00:42:15,700
rocket booster Hardware was recovered an
ordnance storage facility was used to

1326
00:42:15,700 --> 00:42:15,710
ordnance storage facility was used to
 

1327
00:42:15,710 --> 00:42:17,920
ordnance storage facility was used to
house the motor case pieces as some

1328
00:42:17,920 --> 00:42:17,930
house the motor case pieces as some
 

1329
00:42:17,930 --> 00:42:23,590
house the motor case pieces as some
contained unburned propellant marks seen

1330
00:42:23,590 --> 00:42:23,600
contained unburned propellant marks seen
 

1331
00:42:23,600 --> 00:42:25,720
contained unburned propellant marks seen
on the right SRB frustum matched the

1332
00:42:25,720 --> 00:42:25,730
on the right SRB frustum matched the
 

1333
00:42:25,730 --> 00:42:28,180
on the right SRB frustum matched the
contact area shown previously on the et

1334
00:42:28,180 --> 00:42:28,190
contact area shown previously on the et
 

1335
00:42:28,190 --> 00:42:36,670
contact area shown previously on the et
inter tank stringers the size and

1336
00:42:36,670 --> 00:42:36,680
inter tank stringers the size and
 

1337
00:42:36,680 --> 00:42:38,170
inter tank stringers the size and
location of the burn through as

1338
00:42:38,170 --> 00:42:38,180
location of the burn through as
 

1339
00:42:38,180 --> 00:42:40,450
location of the burn through as
indicated by the recovered SRB debris

1340
00:42:40,450 --> 00:42:40,460
indicated by the recovered SRB debris
 

1341
00:42:40,460 --> 00:42:45,210
indicated by the recovered SRB debris
were illustrated on an assembled booster

1342
00:42:45,210 --> 00:42:45,220

 

1343
00:42:45,220 --> 00:42:47,859

the aft center section of the joint

1344
00:42:47,859 --> 00:42:47,869
the aft center section of the joint
 

1345
00:42:47,869 --> 00:42:50,380
the aft center section of the joint
shows a large hole centered at the 307

1346
00:42:50,380 --> 00:42:50,390
shows a large hole centered at the 307
 

1347
00:42:50,390 --> 00:42:52,960
shows a large hole centered at the 307
degrees circumferential position the

1348
00:42:52,960 --> 00:42:52,970
degrees circumferential position the
 

1349
00:42:52,970 --> 00:42:54,940
degrees circumferential position the
irregular hole is roughly rectangular

1350
00:42:54,940 --> 00:42:54,950
irregular hole is roughly rectangular
 

1351
00:42:54,950 --> 00:43:04,660
irregular hole is roughly rectangular
and is about 27 by 15 inches the

1352
00:43:04,660 --> 00:43:04,670
and is about 27 by 15 inches the
 

1353
00:43:04,670 --> 00:43:06,730
and is about 27 by 15 inches the
Steelcase material showed evidence of

1354
00:43:06,730 --> 00:43:06,740
Steelcase material showed evidence of
 

1355
00:43:06,740 --> 00:43:09,099
Steelcase material showed evidence of
hot gas erosion caused by combustion

1356
00:43:09,099 --> 00:43:09,109
hot gas erosion caused by combustion
 

1357
00:43:09,109 --> 00:43:14,349
hot gas erosion caused by combustion
products flowing through the opening the

1358
00:43:14,349 --> 00:43:14,359
products flowing through the opening the
 

1359
00:43:14,359 --> 00:43:16,420
products flowing through the opening the
aft section of the right SRB showed a

1360
00:43:16,420 --> 00:43:16,430
aft section of the right SRB showed a
 

1361
00:43:16,430 --> 00:43:22,240
aft section of the right SRB showed a
hole approximately 33 by 21 inches the

1362
00:43:22,240 --> 00:43:22,250
hole approximately 33 by 21 inches the
 

1363
00:43:22,250 --> 00:43:24,130
hole approximately 33 by 21 inches the
burned surface extended into the aft

1364
00:43:24,130 --> 00:43:24,140
burned surface extended into the aft
 

1365
00:43:24,140 --> 00:43:29,590
burned surface extended into the aft
attached strut region the exterior

1366
00:43:29,590 --> 00:43:29,600
attached strut region the exterior
 

1367
00:43:29,600 --> 00:43:31,750
attached strut region the exterior
surface of the aft case featured a large

1368
00:43:31,750 --> 00:43:31,760
surface of the aft case featured a large
 

1369
00:43:31,760 --> 00:43:34,210
surface of the aft case featured a large
heat affected area the shape and

1370
00:43:34,210 --> 00:43:34,220
heat affected area the shape and
 

1371
00:43:34,220 --> 00:43:36,340
heat affected area the shape and
location of this heat spot indicates an

1372
00:43:36,340 --> 00:43:36,350
location of this heat spot indicates an
 

1373
00:43:36,350 --> 00:43:40,980
location of this heat spot indicates an
impingement from the escaping gases

1374
00:43:40,980 --> 00:43:40,990

 

1375
00:43:40,990 --> 00:43:43,450

there was a small burn through in the

1376
00:43:43,450 --> 00:43:43,460
there was a small burn through in the
 

1377
00:43:43,460 --> 00:43:44,170
there was a small burn through in the
case wall

1378
00:43:44,170 --> 00:43:44,180
case wall
 

1379
00:43:44,180 --> 00:43:45,730
case wall
which appeared to have penetrated from

1380
00:43:45,730 --> 00:43:45,740
which appeared to have penetrated from
 

1381
00:43:45,740 --> 00:43:48,370
which appeared to have penetrated from
the outside in this was due to the

1382
00:43:48,370 --> 00:43:48,380
the outside in this was due to the
 

1383
00:43:48,380 --> 00:43:49,990
the outside in this was due to the
impingement of hot gases from the

1384
00:43:49,990 --> 00:43:50,000
impingement of hot gases from the
 

1385
00:43:50,000 --> 00:43:55,630
impingement of hot gases from the
anomalous plume the hole and the solid

1386
00:43:55,630 --> 00:43:55,640
anomalous plume the hole and the solid
 

1387
00:43:55,640 --> 00:43:57,490
anomalous plume the hole and the solid
rocket booster segments was the result

1388
00:43:57,490 --> 00:43:57,500
rocket booster segments was the result
 

1389
00:43:57,500 --> 00:43:59,109
rocket booster segments was the result
of the joint leakage on the right hand

1390
00:43:59,109 --> 00:43:59,119
of the joint leakage on the right hand
 

1391
00:43:59,119 --> 00:44:01,540
of the joint leakage on the right hand
SRB which was determined to be the cause

1392
00:44:01,540 --> 00:44:01,550
SRB which was determined to be the cause
 

1393
00:44:01,550 --> 00:44:09,520
SRB which was determined to be the cause
of the accident the presidential

1394
00:44:09,520 --> 00:44:09,530
of the accident the presidential
 

1395
00:44:09,530 --> 00:44:11,109
of the accident the presidential
commission concluded that the cause of

1396
00:44:11,109 --> 00:44:11,119
commission concluded that the cause of
 

1397
00:44:11,119 --> 00:44:13,030
commission concluded that the cause of
the Challenger accident was the failure

1398
00:44:13,030 --> 00:44:13,040
the Challenger accident was the failure
 

1399
00:44:13,040 --> 00:44:15,040
the Challenger accident was the failure
of the pressure seal in the aft filled

1400
00:44:15,040 --> 00:44:15,050
of the pressure seal in the aft filled
 

1401
00:44:15,050 --> 00:44:16,870
of the pressure seal in the aft filled
joint of the right solid rocket motor

1402
00:44:16,870 --> 00:44:16,880
joint of the right solid rocket motor
 

1403
00:44:16,880 --> 00:44:19,530
joint of the right solid rocket motor
the failure was due to a faulty design

1404
00:44:19,530 --> 00:44:19,540
the failure was due to a faulty design
 

1405
00:44:19,540 --> 00:44:21,700
the failure was due to a faulty design
rendering the seal unacceptably

1406
00:44:21,700 --> 00:44:21,710
rendering the seal unacceptably
 

1407
00:44:21,710 --> 00:44:25,540
rendering the seal unacceptably
sensitive to a number of factors those

1408
00:44:25,540 --> 00:44:25,550
sensitive to a number of factors those
 

1409
00:44:25,550 --> 00:44:27,040
sensitive to a number of factors those
factors include the effects of

1410
00:44:27,040 --> 00:44:27,050
factors include the effects of
 

1411
00:44:27,050 --> 00:44:29,710
factors include the effects of
temperature physical dimensions the

1412
00:44:29,710 --> 00:44:29,720
temperature physical dimensions the
 

1413
00:44:29,720 --> 00:44:32,020
temperature physical dimensions the
character of materials the effects of

1414
00:44:32,020 --> 00:44:32,030
character of materials the effects of
 

1415
00:44:32,030 --> 00:44:34,599
character of materials the effects of
reuse and processing and the reaction of

1416
00:44:34,599 --> 00:44:34,609
reuse and processing and the reaction of
 

1417
00:44:34,609 --> 00:44:40,000
reuse and processing and the reaction of
the joint to dynamic loading more

1418
00:44:40,000 --> 00:44:40,010
the joint to dynamic loading more
 

1419
00:44:40,010 --> 00:44:42,010
the joint to dynamic loading more
detailed analyses are contained in

1420
00:44:42,010 --> 00:44:42,020
detailed analyses are contained in
 

1421
00:44:42,020 --> 00:44:43,660
detailed analyses are contained in
volume 3 of the report of the

1422
00:44:43,660 --> 00:44:43,670
volume 3 of the report of the
 

1423
00:44:43,670 --> 00:44:45,400
volume 3 of the report of the
Presidential Commission on the space

1424
00:44:45,400 --> 00:44:45,410
Presidential Commission on the space
 

1425
00:44:45,410 --> 00:44:48,550
Presidential Commission on the space
shuttle Challenger accident