Author Topic: Atlas V 551 - AEHF-4 - October 17, 2018  (Read 42041 times)

Offline Mapperuo

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Re: Atlas V 551 - AEHF-4 - October 17, 2018
« Reply #120 on: 10/17/2018 04:37 am »
- Aaron

Online Steven Pietrobon

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Re: Atlas V 551 - AEHF-4 - October 17, 2018
« Reply #121 on: 10/17/2018 04:37 am »
One minute to second ignition.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online Steven Pietrobon

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Re: Atlas V 551 - AEHF-4 - October 17, 2018
« Reply #122 on: 10/17/2018 04:38 am »
Prestart and ignition!
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online Steven Pietrobon

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Re: Atlas V 551 - AEHF-4 - October 17, 2018
« Reply #123 on: 10/17/2018 04:39 am »
T+23 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online Steven Pietrobon

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Re: Atlas V 551 - AEHF-4 - October 17, 2018
« Reply #124 on: 10/17/2018 04:40 am »
T+24 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online Steven Pietrobon

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Re: Atlas V 551 - AEHF-4 - October 17, 2018
« Reply #125 on: 10/17/2018 04:40 am »
T+25 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online Steven Pietrobon

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Re: Atlas V 551 - AEHF-4 - October 17, 2018
« Reply #126 on: 10/17/2018 04:42 am »
T+26 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online Steven Pietrobon

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Re: Atlas V 551 - AEHF-4 - October 17, 2018
« Reply #127 on: 10/17/2018 04:43 am »
T+27 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online Steven Pietrobon

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Re: Atlas V 551 - AEHF-4 - October 17, 2018
« Reply #128 on: 10/17/2018 04:44 am »
T+28 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online Steven Pietrobon

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Re: Atlas V 551 - AEHF-4 - October 17, 2018
« Reply #129 on: 10/17/2018 04:45 am »
New USAF competition.

MECO-2!
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Chris Bergin

Re: Atlas V 551 - AEHF-4 - October 17, 2018
« 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.
« Last Edit: 10/17/2018 04:56 am by Chris Bergin »
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Online Steven Pietrobon

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Re: Atlas V 551 - AEHF-4 - October 17, 2018
« Reply #131 on: 10/17/2018 04:47 am »
End of coverage.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online hartspace

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Re: Atlas V 551 - AEHF-4 - October 17, 2018
« 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

Offline Chris Bergin

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Offline Chris Bergin

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Offline blaze79

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Re: Atlas V 551 - AEHF-4 - October 17, 2018
« 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?

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Offline Chris Bergin

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