A United Launch Alliance Atlas V rocket launched the SILENT BARKER/NROL-107 mission for the National Reconnaissance Office (NRO) and U.S. Space Force (USSF) from Space Launch Complex-41 at Cape Canaveral Space Force Station, Florida.
Credit: ULA
Credit: ULA
Category
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TechTranscript
00:00 [BLANK_AUDIO]
00:10 [BLANK_AUDIO]
00:38 159.
00:39 [BLANK_AUDIO]
00:41 Vehicle internal.
00:43 >> Launch sequence restart.
00:45 [BLANK_AUDIO]
00:47 >> 150.
00:48 [BLANK_AUDIO]
00:49 >> Securing Centaur LH2.
00:51 >> Securing Centaur LO2.
00:53 [BLANK_AUDIO]
00:56 >> 140.
00:57 [BLANK_AUDIO]
01:00 >> Launch enabled.
01:01 [BLANK_AUDIO]
01:06 >> 90 minus 90 seconds.
01:08 The launch vehicle, payload, ground systems, and eastern range are go for launch.
01:12 [BLANK_AUDIO]
01:17 >> 120.
01:18 [BLANK_AUDIO]
01:19 >> OCU's armed.
01:20 >> SCS count started.
01:22 >> 115.
01:23 [BLANK_AUDIO]
01:24 >> Reduce ECS for launch.
01:26 >> Roger.
01:27 >> 110.
01:28 [BLANK_AUDIO]
01:35 >> T minus one minute.
01:36 >> T minus one minute.
01:37 [BLANK_AUDIO]
01:38 >> Range green.
01:39 [BLANK_AUDIO]
01:49 >> 40 seconds.
01:58 >> Stable at step three.
01:59 [BLANK_AUDIO]
02:09 >> Verify ECS reduced for launch.
02:12 >> Verify.
02:13 >> 25 seconds.
02:14 >> Status check.
02:15 >> Go Atlas.
02:16 >> Go Centaur.
02:18 >> Go Silent Parker, NRL 107.
02:20 [BLANK_AUDIO]
02:26 >> T minus 10, 9, 8, 7, 6, 5, 4, 3.
02:34 We have ignition, 2, 1.
02:38 And liftoff of the United Launch Alliance Atlas V rocket carrying Silent Parker, NRL 107,
02:44 for the National Reconnaissance Office and the United States Space Force.
02:48 [BLANK_AUDIO]
02:52 >> SRP chamber pressures continue to climb out.
02:54 >> We have entered our first throttle bucket for the RD-180.
02:57 [BLANK_AUDIO]
03:01 >> Everything is looking good.
03:03 >> Coming up on 30 seconds into the mission.
03:06 >> P.U. has gone to closed-loop control.
03:08 [BLANK_AUDIO]
03:11 >> And we've completed pitch program.
03:12 [BLANK_AUDIO]
03:16 >> Mach one, vehicles now supersonic.
03:18 [BLANK_AUDIO]
03:20 >> Coming up on max Q.
03:21 [BLANK_AUDIO]
03:25 >> Max dynamic pressure.
03:26 [BLANK_AUDIO]
03:30 >> And we're throttling up on the RD-180, closing normal burn profile on the SRBs.
03:36 [BLANK_AUDIO]
03:40 >> In the next 10 seconds, we'll be throttling down for SRB burnout.
03:43 [BLANK_AUDIO]
03:47 >> Body rates look good, acceleration looks good.
03:49 [BLANK_AUDIO]
03:54 >> Throttling down in preparation for SRB burnout.
03:56 [BLANK_AUDIO]
03:58 >> You are hearing the voice of Rob Gannon providing launch vehicle ascent data.
04:01 >> SRBs are rolling off.
04:02 [BLANK_AUDIO]
04:08 >> And we have burnout.
04:09 All five SRBs are rolling off, approaching zero.
04:12 RD-180 continues to operate normally.
04:14 [BLANK_AUDIO]
04:18 >> About 10 seconds to jettison.
04:19 [BLANK_AUDIO]
04:29 >> RD-180 continues to operate normally.
04:31 [BLANK_AUDIO]
04:34 >> And we have jettisoned all five SRBs.
04:37 [BLANK_AUDIO]
04:46 >> And the vehicle is now in closed-loop guidance, as expected.
04:50 [BLANK_AUDIO]
04:53 >> RD-180 continues to operate normally.
04:55 [BLANK_AUDIO]
04:56 >> And executing throttle profile as expected.
04:58 [BLANK_AUDIO]
05:06 >> We are two minutes to nominal BECO.
05:08 [BLANK_AUDIO]
05:12 >> Next event we're looking for is throttling down to 2.5 G constant acceleration
05:18 in preparation for fairing separation.
05:21 [BLANK_AUDIO]
05:36 >> We fired the pyrovalves, activating the reaction control system.
05:40 [BLANK_AUDIO]
05:42 >> On the second stage, coming up on fairing jettison.
05:45 [BLANK_AUDIO]
05:50 >> Fairing jet.
05:51 [BLANK_AUDIO]
05:53 >> And CFR separation is completed as well, throttling back up.
05:58 [BLANK_AUDIO]
06:01 >> This is Atlas Mission Control at T+ 3 1/2 minutes.
06:05 Just heard flight commentator Rob Gannon confirm the successful completion of the early phase of today's flight,
06:10 and all systems continue to operate nominally.
06:14 At this time, we'll end our live coverage.
06:17 For more information on the Atlas V vehicle, visit ULALaunch.com.
06:21 I'm Pam Zierert.
06:22 Thank you for joining me this morning.
06:24 Before we sign off, let's take another look at liftoff of the Atlas V rocket with Silent Barker.
06:28 [BLANK_AUDIO]
06:31 >> T-10, 9, 8, 7, 6, 5, 4, 3.
06:39 We have ignition, 2, 1.
06:43 And liftoff of the United Launch Alliance Atlas V rocket carrying Silent Barker NRL 107
06:49 for the National Reconnaissance Office and the United States Space Force.
06:53 [BLANK_AUDIO]
06:56 >> SRP chamber pressures continue to climb out.
06:59 We have entered our first throttle bucket for the RD-180.
07:02 [BLANK_AUDIO]
07:06 >> Everything is looking good.
07:08 Coming up on 30 seconds into the mission.
07:11 P.U. has gone to closed-loop control.
07:13 [BLANK_AUDIO]
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