Author Topic: SpaceX Falcon 9 : SES 11/Echostar 105 : Oct 11, 2017 : Discussion  (Read 95197 times)

Offline Grendal

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When will SpaceX post the webcast information?

About 18 to 24 hours prior to launch.

Online HVM

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Weather seems bad for tomorrow's launch of NROL-52. Which one get the launch day, if Friday is scrub too?

Offline SmallKing

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Weather seems bad for tomorrow's launch of NROL-52. Which one get the launch day, if Friday is scrub too?
Both I thought ;)
Quote
Bill Nelson‏Verified account @SenBillNelson  12h12 hours ago
More
 Good news for Florida’s Space Coast. Just spoke w/ Air Force Gen. Monteith - he confirmed the Cape is ready to handle two launches in a day.
https://twitter.com/SenBillNelson/status/915671776356691969
« Last Edit: 10/05/2017 08:10 am by SmallKing »
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Weather seems bad for tomorrow's launch of NROL-52. Which one get the launch day, if Friday is scrub too?

I was wondering too. I don't know what it means, but the 45th have removed the link to the SES-11 weather forecast form their webpage (although the file is still accessable via direct link).

Offline ClayJar

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Hope this slows down or track on the western side of the cone.
Well, maybe not *directly* at Baton Rouge, if you don't mind.

Offline toruonu

Weather seems bad for tomorrow's launch of NROL-52. Which one get the launch day, if Friday is scrub too?
Both I thought ;)
Quote
Bill Nelson‏Verified account @SenBillNelson  12h12 hours ago
More
 Good news for Florida’s Space Coast. Just spoke w/ Air Force Gen. Monteith - he confirmed the Cape is ready to handle two launches in a day.
https://twitter.com/SenBillNelson/status/915671776356691969

Wait, two launches from different providers? That'd be news.

Offline SmallKing

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Wait, two launches from different providers? That'd be news.
I'm afraid not. 45SW just updated the NROL52 weather forecast for the second attempt and deleted SES11s
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Offline philw1776

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Delayed till NET Wednesday per update post.  "Engine issue"  Possibly revealed in static fire.
FULL SEND!!!!

Offline Wolfram66

Delayed till NET Wednesday per update post.  "Engine issue"  Possibly revealed in static fire.

SFN Has updated their story:
Quote
Story updated at 9:50 a.m. EDT (1350 GMT) to remove engine reference.
https://spaceflightnow.com/2017/10/05/spacex-delays-falcon-9-launch-of-tv-broadcast-satellite/

Offline Lars-J

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Yes NROL52 seems to be the reason here.

Offline envy887

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Yes NROL52 seems to be the reason here.

SFN still says "a potential technical issue on the rocket."

Offline KaiFarrimond

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When will SpaceX post the webcast information?
Usually a day before launch
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Offline vandersons

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Yes NROL52 seems to be the reason here.

The L2 thread has more info on it.

Offline king1999

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Yes NROL52 seems to be the reason here.

SFN still says "a potential technical issue on the rocket."

Maybe it has something to do with being a reuse booster?

Offline ChrisC

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Assuming they stick with Oct 11th, would the launch window still be the same 6:53-8:53 p.m. EDT?
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Offline ChrisGebhardt

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Assuming they stick with Oct 11th, would the launch window still be the same 6:53-8:53 p.m. EDT?

Generally speaking, yes.  It will be the same approximate time.  Probably a window open 4 or so minutes earlier -- based on the window moving 5mins earlier when the launch moved from 2 Oct to 7 Oct.
« Last Edit: 10/05/2017 08:13 pm by ChrisGebhardt »

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Re: NROL-52 and this launch

If the Atlas V roll-back to the VIF for removal, replacement, and retesting of the LV telemetry transmitter, followed by rolling the Atlas V back again to the pad, takes more than 3 or 4 days,

And if there are no further changes to the SES 11 launch campaign,

Then this Falcon 9 will launch first.
« Last Edit: 10/07/2017 10:14 am by zubenelgenubi »
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Offline Stranger

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"The company did not disclose a reason for the four-day slip, but one source said SpaceX needed to conduct some “minor engine rework” on the Falcon 9."
https://spaceflightnow.com/2017/10/05/spacex-delays-falcon-9-launch-of-tv-broadcast-satellite/

reused problem?

Online FutureSpaceTourist

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Re: NROL-52 and this launch

If the Atlas V roll-back to the VIF for removal, replacement, and retesting of the LV telemetry transmitter, followed by rolling the Atlas V back again to the pad, takes more than 3 or 4 days,

And if there are no further changes to the SES 11 launch campaign,

Then this Falcon 9 will launch first.

This now appears to be confirmed - revised weather forecast for SES-11 launch tomorrow, with new NROL-52 forecast for Saturday.

Offline EspenU

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I noticed that the time from MECO to second engine start is 5 seconds. Iridium-3 was 13 seconds and SES-10 was 11 seconds.
The benefits of reduced coast time between stages is obvious, but I'm surprised they have managed to reduce the coast by more than 50% compared to the last SES mission.

Note that all numbers are taken from the mission press kits's.

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