Atlas V Rocket Launched 'Silent Barker' Spysat For US Space Force

Space.com

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

Transcript

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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