Author Topic: SpaceX Falcon 9 : GPS III SV01 : SLC-40 : Dec. 23, 2018 - UPDATES  (Read 63081 times)

Offline Steven Pietrobon

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Official announcement of scrub.

https://twitter.com/SpaceX/status/1075745493324451840

"Standing down today due to weather. Vehicle and payload remain in good health. Working toward the next best launch opportunity; will announce a new launch date once confirmed on the Range."
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline FutureSpaceTourist

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Latest weather forecast, tomorrow looking as bad as today - 40% GO but very high upper level winds. Saturday though looking good (if range is available):

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Launch day probability of violating launch weather constraints: 60%
Primary concern(s): Cumulus Cloud Rule, Liftoff Winds
 
24-Hour delay probability of violating launch weather constraints: 20%
Primary concern(s): Liftoff Winds
« Last Edit: 12/20/2018 02:31 pm by FutureSpaceTourist »

Offline Elthiryel

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It looks like GPS III SV01 is going to be the first flight with new COPVs in both stages.

https://twitter.com/Free_Space/status/1075777466323460103
GO for launch, GO for age of reflight

Offline Elthiryel

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And the launch is now NET December 22!

https://twitter.com/SpaceX/status/1075778452064632838
GO for launch, GO for age of reflight

Offline ChrisGebhardt

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It looks like GPS III SV01 is going to be the first flight with new COPVs in both stages.

https://twitter.com/Free_Space/status/1075777466323460103

I thought Hans already said this back on Dec. 5th when CRS-16 launched, no?  Why is this sticking in my head that this isn't new information?

Also, Hans said at the CRS-16 post-flight presser that the previous 2 flights DO count toward NASA's 7, so this flight would be the 3rd.

(Posting in the update thread as I'm not certain this is an update vs. a publication of information we were told 2 weeks ago.)
« Last Edit: 12/20/2018 02:50 pm by ChrisGebhardt »

Offline theinternetftw

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Also, Hans said at the CRS-16 post-flight presser that the previous 2 flights DO count toward NASA's 7, so this flight would be the 3rd.

(Posting in the update thread as I'm not certain this is an update vs. a publication of information we were told 2 weeks ago.)

For context, the confirmation of S2-only COPV flights counting was initially fuzzy:
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Tim Fernholz, Quartz: And will that count towards the seven demonstrations that SpaceX needs to do to be certified to fly astronauts next year?

Hans Koenigsmann, SpaceX: I think it does.

Then in a later answer it was more solidly asserted.
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Hans Koenigsmann, SpaceX: So on the COPV front, we basically had a modification of the COPV for crew. And these COPV are phased in, slowly. And all I said in the earlier answer was that the second stage contained the new upgraded COPV, and it does count toward a demonstration of seven flights prior to demo.

(full transcript)

Offline Elthiryel

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Updated weather forecast is now available!

Quote
Launch day probability of violating launch weather constraints: 10%
Primary concern(s): Liftoff Winds
Maximum upper-level winds will be from the northwest at 95 knots near 40,000 feet.

24-Hour delay probability of violating launch weather constraints: <5%
Primary concern(s): Liftoff Winds
Maximum upper-level winds will be from the west at 85 knots near 40,000 feet.
GO for launch, GO for age of reflight

Offline FutureSpaceTourist

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https://twitter.com/wmfeorlando/status/1076195223817064450

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As Shutdown Looms, More Than Half Of Kennedy Space Center Federal Employees Could Be Furloughed wmfe.org/as-shutdown-lo…

https://twitter.com/spacebrendan/status/1076195608875159552

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A @SpaceX launch Saturday will NOT be affected, and the KSC Visitor Complex @ExploreSpaceKSC will remain open (including bus tours!)


Offline FutureSpaceTourist

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https://twitter.com/spacexfleet/status/1076435704870330369

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Rough seas and high winds look to be the cause of cancelled fairing retrieval by GO Pursuit for today's launch. Waves up to 6m high and wind gusts of 70km/h in the recovery zone!


Offline ChrisGebhardt

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New T0 is 09:21 EST (1421 UTC).

Offline FutureSpaceTourist

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https://twitter.com/spacex/status/1076463374102220800

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Continue to monitor upper level winds. Pushing T-0 to 9:21 a.m. EST, 14:21 UTC → spacex.com/webcast
« Last Edit: 12/22/2018 12:06 pm by FutureSpaceTourist »

Offline ChrisGebhardt

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Polling.

Offline Steven Pietrobon

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T-38 minutes. SpaceX Launch Director should be verifying go for propellant load.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline ChrisGebhardt

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GO to proceed with propellant load!

Offline Steven Pietrobon

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T-35 minutes. First and second stage RP-1 and second stage LOX loading should be starting now.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline ChrisGebhardt

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T-35mins.  Launch auto has started.  Fueling has begun.

Offline ChrisGebhardt

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OK.   Upper Level Winds are STILL a concern.  FINAL Upper Level Wind determination will be at T-30 SECONDS.

Offline Steven Pietrobon

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twitter.com/SpaceX/status/1076475370784735233

T-30 minutes until Falcon 9 launch of GPS III SV01. Launch webcast will go live about 15 minutes before liftoff → http://spacex.com/webcast
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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