Author Topic: Atlas V 551 - AEHF-4 - October 17, 2018 (Read 44157 times)

Steven Pietrobon · « **Reply #121 on:** 10/17/2018 04:37 am »

One minute to second ignition.

Steven Pietrobon · « **Reply #122 on:** 10/17/2018 04:38 am »

Prestart and ignition!

Steven Pietrobon · « **Reply #123 on:** 10/17/2018 04:39 am »

T+23 minutes.

Steven Pietrobon · « **Reply #124 on:** 10/17/2018 04:40 am »

T+24 minutes.

Steven Pietrobon · « **Reply #125 on:** 10/17/2018 04:40 am »

T+25 minutes.

Steven Pietrobon · « **Reply #126 on:** 10/17/2018 04:42 am »

T+26 minutes.

Steven Pietrobon · « **Reply #127 on:** 10/17/2018 04:43 am »

T+27 minutes.

Steven Pietrobon · « **Reply #128 on:** 10/17/2018 04:44 am »

T+28 minutes.

Steven Pietrobon · « **Reply #129 on:** 10/17/2018 04:45 am »

New USAF competition.

MECO-2!

Chris Bergin · « **Reply #130 on:** 10/17/2018 04:46 am »

Three hours coast. Amazing coverage again from Steven - as always.

Still an active mission of course, so only updates continuing.

Steven Pietrobon · « **Reply #131 on:** 10/17/2018 04:47 am »

End of coverage.

hartspace · « **Reply #132 on:** 10/17/2018 04:47 am »

Quote

12:43 a.m. EDT (0443 UTC)

T+plus 28 minutes, 27 seconds. The second main engine cutoff, or MECO-2, is confirmed for Centaur, completing the next step towards the targeted orbit to deploy AEHF-4. The rocket now begins a three-hour coast away from Earth to reach the proper point in space for the morning’s third burn by the upper stage to optimize the orbit for payload release.

https://www.ulalaunch.com/missions/atlas-v-aehf-4

Chris Bergin · « **Reply #133 on:** 10/17/2018 04:47 am »

https://twitter.com/NASA_Nerd/status/1052416549640957953

hartspace · « **Reply #134 on:** 10/17/2018 04:48 am »

https://twitter.com/torybruno/status/1052420516844380160

hartspace · « **Reply #135 on:** 10/17/2018 04:54 am »

https://twitter.com/ulalaunch/status/1052420301768790017

Chris Bergin · « **Reply #136 on:** 10/17/2018 05:15 am »

https://twitter.com/julia_bergeron/status/1052420139247910912

blaze79 · « **Reply #137 on:** 10/17/2018 05:57 am »

"At separation, the spacecraft is expected to be in an orbit of 8,914 by 35,299 kilometers (5,539 by 21,934 miles, 4,813 by 19,060 nautical miles), inclined at 12.8 degrees "
Could anybody calculate delta V for GSO?

FutureSpaceTourist · « **Reply #138 on:** 10/17/2018 05:59 am »

https://twitter.com/johnkrausphotos/status/1052414245705416704

https://twitter.com/cygnusx112/status/1052414404350959616

Chris Bergin · « **Reply #139 on:** 10/17/2018 07:55 am »

https://twitter.com/NASASpaceflight/status/1052467748951941121