three-two-one t-minus five minutes and
Counting we have a go for the orbiter
APU start pilot llaha is now flipping
the three switches in the cockpit to
start each of the three ap use APU
activation is complete
Mandor Fred Gregory has been asked to
reconfigure the orbiter heaters for
launch he reports that those heaters are
reconfigured
t-minus four minutes 27 seconds and
counting
the solid rocket booster and external
tanks safe and armed devices had been
armed with one oxygen replenishing of
the external tank now has been
terminated report now that the APU start
is complete coming up now on t-minus
four minutes main engine final purge
sequence is underway the main engine
valves are being checked the orbiter
flight control surfaces such as the
elevon speed brakes and rudder are now
being moved through a pre-programmed
pattern to verify that they are ready
for launch t-minus 3 minutes 45 seconds
and counting
all systems on board the space shuttle
I'll report it go
coming up now on t-minus three minutes
30 seconds and counting
all three of Discovery's main engines
are now being gimballed which is a
steering check to verify the readiness
for flight control when this check is
complete they'll be aligned to their
main engine start positions coming up
now on the 3-minute mark in the count t
minus 3 10 and county
t-minus three minutes t-minus 255 the
pressurization of the liquid oxygen tank
will begin and the gaseous nitrogen of
the main engines will be terminated
ground launch sequencer has started a
retract of the gaseous oxygen pit hood
which is the beanie cap on the external
tank the computers will make a final
check to ensure that the vent arm is
fully retracted at the t-minus 37 second
point
ground supply of hydrogen and oxygen for
the orbiter fuel cells has now been
turned off discovery is running on its
onboard reactants the orbiter test
conductor will shortly be asking John
Blaha
to clear the caution and warning system
the crew has been told to close their
visors on their launch and reentry
helmets and to start the oxygen supply
to their pressure suits we are go now
for liquid hydrogen pressurization
replenishing of the external tank is
stopped tank being pressurized to flight
level the space shuttle is now isolated
from all ground propellant and fluid
loading equipment
t-minus 90 seconds were less than a
minute and a half away from the launch
of STS 33 and the space shuttle
Discovery
with its five astronaut crew at t-minus
one minute the ground law sequencer will
verify that the shuttle main engines are
ready to start
like what hydrogen tank is now at flight
pressure do you - one minute 10 seconds
t-minus one minute the sound suppression
water system is now armed the water will
be released at t minus 16 seconds at a
flow rate of nine hundred thousand
gallons per minute the heaters around
the solid rocket booster joints have now
been turned off hydrogen burning
nighters have now been armed the
igniters will be fired at t minus ten
seconds to burn off any ambient hydrogen
under the main engine nozzles solid
rocket booster flight instrumentation
recorders have now gone into the record
mode the main propulsion system oxygen
and hydrogen fill valves have now been
closed t-minus 27 seconds we have a go
for autosequence start
t-minus 23 seconds and counting the
orbiters body flap and speed break have
been positioned for the launch t-minus
15 seconds and counting
sound suppression water system has
started the launch igniters and
pyrotechnics are armed 9 8 7 6 5 4 3 2 1
liftoff
liftoff of the space shuttle Discovery
before it's Thanksgiving Day mission
roll program initiated three engines
throttling back now to 65% as Discovery
passes through the area of maximum
dynamic pressure velocity now 2,000 feet
per second if you use all looking good
velocity now 2,300 feet per second
all three engines have now throttled
back up to 104 percent the crews
received a go at throttle a call meaning
all systems are performing normally
discovery now at velocity of 4000 feet
per second three engines running at 104
percent all three apu looking good
downrange distance 14 nautical miles
separation of the solid rocket boosters
has been been confirmed by the booster
officer velocity now 5000 feet per
second discovery 40 nautical miles
downrange
flight dynamics officer has confirmed
nominal performance from the combination
of the engines and the solid rocket
boosters this call means that we have
gotten the expected thrust for the
vehicle out of the booster system
discovery now at 5,200 feet per second
velocity altitude of 45 nautical miles
and 70 nautical miles downrange
discovery now has the capability to
reach the transatlantic abort site
should one engine fail three engines
still looking good if you use all
performing well velocity now 6000 feet
per second downrange 90 nautical miles
discovery now moving at a velocity of
7500 feet per second downrange 145
nautical miles at an altitude of 54
nautical miles all engines looking good
and discovery has received the negative
return call meaning that it is no longer
no longer possible for discovery to
return to the launch site
discovery now visible through the
television cameras on location at Dryden
Flight Research Facility at Edwards Air
Force Base in California Discovery's
velocity now Mach 1.7 at 72 thousand
feet altitude
flight dynamics officer reports
discovery is looking good
coming up on the heading alignment
circle velocity now mach 0.9
discovery will make a right overhead
turn on the heading alignment circle of
336 degrees
why dynamics officer reports discovery
looking good rolling onto the heading
alignment circle velocity 800 feet per
second altitude is 38,000 feet
guidance navigation and control officer
reports nav is good discovery coming
around the hitting alignment circle now
about halfway around velocity 600 feet
per second
altitude 25,000 feet
discovery looks good rolling onto final
as reported by the flight dynamics
officer surface winds are reported to be
19 not head win and a four not right
crosswind well within the limits for
landing at two a runway four
altitude is now 13,000 feet about one
and a half minutes to touchdown
altitude now 6000 feet fly dynamics
officer reports that discovery is
converging on the center line above
runway 4
gear down and locked
main gear touchdown
nose gear touchdown discovery rolling
out at the end of mission STS 33 yet
Edwards Air Force Base on runway 4
commander craigory reports wheelstop