Author Topic: LIVE: Atlas V 421 - NROL-52 Canaveral SLC-41 - October 15, 2017 (07:28 UTC)  (Read 90439 times)

Offline Steven Pietrobon

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Held at T-1:38.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline William Graham

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Resetting to T-4 and holding
« Last Edit: 10/06/2017 08:31 am by William Graham »

Offline William Graham

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Official hold time was T-1:37

Offline Steven Pietrobon

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Cycling back to T-4 minutes and holding.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline William Graham

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Scrubbed for today. 24 hour recycle
« Last Edit: 10/06/2017 08:34 am by William Graham »

Offline Steven Pietrobon

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Scrub for the day. 24 hour recycle.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline jacqmans

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3:59 am launch tomorrow
Jacques :-)

Offline Steven Pietrobon

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Webcast ending.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online Chris Bergin

Good work everyone, especially Steven. Let's try again tomorrow.
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Online zubenelgenubi

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Did they run out of launch window?  Or was no reason given for going from the T-4 minutes to scrub?

(I lost the web cast after they recycled to T-4 minutes.)
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Offline Steven Pietrobon

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Did they run out of launch window?

We don't know as they didn't say what the launch window is (see tweet below). They could have either run out of window or the weather looked like it wasn't going to improve.

"@sahgma NRO launch windows aren't publicly released."
« Last Edit: 10/06/2017 08:47 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Star One

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Some might question the wisdom of trying to launch with such a poor upfront weather prediction, is that normal when the odds of good weather are so low?

Offline Ben the Space Brit

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It could even be a hardware problem, as surprising it to even think that. Atlas-V and Centaur have both had some hiccups of late (although nothing frequent enough to suggest a trend).
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Weather forecast for tomorrow and beyond looking better:

Quote
Launch day overall probability of violating weather constraints: 40% 
Primary concern(s):   Cumulus Clouds, Ground Winds 

24-hour delay overall probability of violating weather constraints: 30% 
Primary concern(s): Cumulus Clouds, Thick Cloud

Online FutureSpaceTourist

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The @ulalaunch #AtlasV launch carrying #NROL52 in support of national security remains on track for 10/7 at 3:59 am ET from CCAFS in FL...

https://twitter.com/aerojetrdyne/status/916364275417059329

Offline catdlr

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Atlas V NROL-52 LIVE Launch Broadcast (Oct. 7)

United Launch Alliance
Scheduled for Oct 7, 2017


Tune in for the live launch broadcast as United Launch Alliance's Atlas V launches the NROL-52 mission for the National Reconnaissance Office.



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Offline SmallKing

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Spaceflight Now‏ @SpaceflightNow  1h1 hour ago
More
 Weather forecast improves to 70% GO for overnight Atlas 5 #NROL52 launch from Cape Canaveral https://spaceflightnow.com/2017/10/02/av075_journal/
https://twitter.com/SpaceflightNow/status/916492622537089029
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Offline trothamel

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https://twitter.com/ulalaunch/status/916529551278329856

Quote
#AtlasV #NROL52 launch scrubbed today due to an issue with a telemetry transmitter on the rocket.

The team will replace and retest the hardware in the Vertical Integration Facility prior to another launch attempt. #AtlasV #NROL52

A new #AtlasV #NROL52 launch date will be released when it’s established.

Offline 76794p

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The Atlas V scrub record has been broken. The previous record was 2 scrubs with a successful launch on the 3rd attempt.

Online FutureSpaceTourist

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Shame about the launch delays but we do get some stunning visuals

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