1 00:00:00,410 --> 00:00:03,770 George Diller, NASA Launch Commentator: This is Pegasus launch control 2 00:00:03,770 --> 00:00:05,660 at T-2 hours and counting. 3 00:00:05,660 --> 00:00:11,360 Preparations are under way for the launch of the Orbital Sciences Pegasus XL rocket 4 00:00:11,360 --> 00:00:12,160 carrying NASA's NuSTAR spacecraft. 5 00:00:12,160 --> 00:00:17,990 The call to stations for the launch team was at 7 a.m. this morning 6 00:00:17,990 --> 00:00:24,990 and the launch countdown began at 7:30 a.m. eastern time at T-4 hours. 7 00:00:25,429 --> 00:00:31,420 The time from the L-1011's departure until the drop of the Pegasus rocket is 60 minutes 8 00:00:31,420 --> 00:00:37,379 and the launch window available to us today is four hours in duration. 9 00:00:37,379 --> 00:00:40,960 Weather wise, we have no significant clouds or weather. 10 00:00:40,960 --> 00:00:46,770 The forecast today calls for only a one percent chance or even less, 11 00:00:46,770 --> 00:00:53,170 almost no chance of having a launch weather issue during our countdown today in the drop 12 00:00:53,170 --> 00:00:54,850 box location. 13 00:00:54,850 --> 00:00:59,399 So at this time, from a weather standpoint, we are completely green. 14 00:00:59,399 --> 00:01:05,330 The University of California at Berkeley is responsible for the operation of the spacecraft 15 00:01:05,330 --> 00:01:10,430 and the California Institute of Technology, or CalTech, is responsible 16 00:01:10,430 --> 00:01:11,710 for the mission science. 17 00:01:11,710 --> 00:01:17,270 Both the Pegasus XL rocket and the NuSTAR spacecraft were built by 18 00:01:17,270 --> 00:01:18,880 Orbital Sciences Corporation. 19 00:01:18,880 --> 00:01:23,900 This will be the 41st launch of a Pegasus rocket, 20 00:01:23,900 --> 00:01:26,920 13th for NASA and this is the thirdlaunch 21 00:01:26,920 --> 00:01:32,970 from Kwajalein Atoll in the Marshall Islands for NASA's Launch Services Program. 22 00:01:32,970 --> 00:01:38,490 Launch Conductor: And launch team, this is LC on countdown net. 23 00:01:38,490 --> 00:01:39,780 L-1011 is rolling for taxi, 24 00:01:39,780 --> 00:01:46,780 this completes the engine start and pre-taxi checklist. 25 00:02:22,480 --> 00:02:27,240 And we've got wheels up, launch team. We'll go ahead and check step 116 complete. 26 00:02:27,240 --> 00:02:30,860 That completes the pre-takeoff checklist, currently in the climb-cruise checklist. 27 00:02:33,160 --> 00:02:34,560 Launch Controller: And batteries on my mark, 28 00:02:34,560 --> 00:02:35,160 Three 29 00:02:35,160 --> 00:02:35,700 Two 30 00:02:35,700 --> 00:02:36,170 One 31 00:02:36,170 --> 00:02:37,020 Mark 32 00:02:40,020 --> 00:02:41,530 Starboard now. 33 00:02:42,030 --> 00:02:43,130 Port now. 34 00:02:43,530 --> 00:02:46,190 RCRSO, rudder now. 35 00:02:48,090 --> 00:02:50,060 Fin sweep now. 36 00:02:55,060 --> 00:02:58,660 Launch Conductor: LC is go for launch, PLT confirms. 37 00:02:58,940 --> 00:03:00,510 George Diller/Launch Commentator: T minus 15 seconds. 38 00:03:00,510 --> 00:03:02,520 Pilot is "go" for launch. 39 00:03:02,520 --> 00:03:03,890 T minus 10 40 00:03:03,890 --> 00:03:04,750 Nine 41 00:03:04,750 --> 00:03:05,380 Eight 42 00:03:05,380 --> 00:03:06,240 Seven 43 00:03:06,240 --> 00:03:07,140 Six 44 00:03:07,140 --> 00:03:08,080 Five 45 00:03:08,080 --> 00:03:08,880 Four 46 00:03:08,880 --> 00:03:09,630 Three 47 00:03:09,630 --> 00:03:10,220 Two 48 00:03:10,220 --> 00:03:11,260 One 49 00:03:11,260 --> 00:03:14,230 Drop 50 00:03:14,230 --> 00:03:17,790 And Pegasus is away, standing by for ignition. 51 00:03:17,790 --> 00:03:19,730 Launch Controller: Stage 1 ignition. 52 00:03:19,730 --> 00:03:24,960 George Diller/Launch Commentator: And we have Stage 1 ignition. 53 00:03:24,960 --> 00:03:29,580 Ignition of the Pegasus rocket with NuSTAR for an understanding of the ultimate destinies 54 00:03:29,580 --> 00:03:31,459 of our stars and galaxies. 55 00:03:31,459 --> 00:03:34,840 Ascent Commentator: Fin actuator system operating nominally. 56 00:03:34,840 --> 00:03:39,990 Fins following commands and controlling the flight of the vehicle. 57 00:03:39,990 --> 00:03:44,650 Power bus is strong, PDUs enabled. Vehicle flight path is nominal, flying the normal 58 00:03:44,650 --> 00:03:46,500 trajectory. 59 00:03:46,500 --> 00:03:47,480 Launch Controller: We have Stage 1 sep. 60 00:03:47,480 --> 00:03:48,900 Stage 2 ignition confirmed. 61 00:03:48,900 --> 00:03:51,480 Launch Controller: Stage 2 ignition. 62 00:03:51,480 --> 00:03:54,709 Launch Controller: Stage 2 separation. 63 00:03:54,709 --> 00:03:57,420 Eleven seconds to stage three ignition. 64 00:03:57,420 --> 00:04:02,720 Attitude remains nominal. Stage 3 status good. 65 00:04:02,720 --> 00:04:09,220 Stage 3 ignition. Attitude nominal. 66 00:04:09,220 --> 00:04:13,069 Stage 3 TVC performing nominally, controlling the flight of the vehicle during the 67 00:04:13,069 --> 00:04:14,130 Stage 3 burn. 68 00:04:14,130 --> 00:04:21,130 Launch Controller: Payload separation, NuSTAR separation from Pegasus. 69 00:04:22,139 --> 00:04:25,510 NuSTAR reports that the spacecraft has been acquired via TDRS. 70 00:04:25,510 --> 00:04:29,230 George Diller/Launch Commentator: And we have confirmation of solar array deployment has 71 00:04:29,230 --> 00:04:30,320 been started. 72 00:04:30,320 --> 00:04:34,970 Launch Controller: Standby, the generation of the state vector message is in work and 73 00:04:34,970 --> 00:04:35,840 will be transmitted 74 00:04:35,840 --> 00:04:38,010 as soon as it's verified. 75 00:04:38,010 --> 00:04:42,020 George Diller/Launch Commentator: And we've gotten confirmation through the 76 00:04:42,020 --> 00:04:42,880 spacecraft team, 77 00:04:43,080 --> 00:04:51,980 they've got a good lock with the TDRS spacecraft and the spacecraft is still reorienting, 78 00:04:51,990 --> 00:04:57,750 getting ready to point fully into the sun point attitude. But at this point we seem 79 00:04:57,750 --> 00:05:02,530 to have a successful launch, 80 00:05:02,530 --> 00:05:09,530 so this will conclude our launch coverage for today. At 26 minutes,