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

Grendal · « **Reply #60 on:** 10/05/2017 04:56 am »

Quote from: spacenut on 10/05/2017 04:49 am

When will SpaceX post the webcast information?

About 18 to 24 hours prior to launch.

HVM · « **Reply #61 on:** 10/05/2017 07:59 am »

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

SmallKing · « **Reply #62 on:** 10/05/2017 08:10 am »

Quote from: HVM on 10/05/2017 07:59 am

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

FutureSpaceTourist · « **Reply #63 on:** 10/05/2017 10:31 am »

Quote from: HVM on 10/05/2017 07:59 am

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).

ClayJar · « **Reply #64 on:** 10/05/2017 12:05 pm »

Quote from: Mike_1179 on 10/04/2017 05:17 pm

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.

toruonu · « **Reply #65 on:** 10/05/2017 12:36 pm »

Quote from: SmallKing on 10/05/2017 08:10 am

Quote from: HVM on 10/05/2017 07:59 am
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.

SmallKing · « **Reply #66 on:** 10/05/2017 12:43 pm »

Quote from: toruonu on 10/05/2017 12:36 pm

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

philw1776 · « **Reply #67 on:** 10/05/2017 02:12 pm »

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

Wolfram66 · « **Reply #68 on:** 10/05/2017 03:12 pm »

Quote from: philw1776 on 10/05/2017 02:12 pm

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/

Lars-J · « **Reply #69 on:** 10/05/2017 04:30 pm »

Yes NROL52 seems to be the reason here.

envy887 · « **Reply #70 on:** 10/05/2017 04:35 pm »

Quote from: Lars-J on 10/05/2017 04:30 pm

Yes NROL52 seems to be the reason here.

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

KaiFarrimond · « **Reply #71 on:** 10/05/2017 05:43 pm »

Quote from: spacenut on 10/05/2017 04:49 am

When will SpaceX post the webcast information?

Usually a day before launch

vandersons · « **Reply #72 on:** 10/05/2017 06:18 pm »

Quote from: Lars-J on 10/05/2017 04:30 pm

Yes NROL52 seems to be the reason here.

The L2 thread has more info on it.

king1999 · « **Reply #73 on:** 10/05/2017 06:49 pm »

Quote from: envy887 on 10/05/2017 04:35 pm

Quote from: Lars-J on 10/05/2017 04:30 pm
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?

ChrisC · « **Reply #74 on:** 10/05/2017 06:53 pm »

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

ChrisGebhardt · « **Reply #75 on:** 10/05/2017 08:09 pm »

Quote from: ChrisC on 10/05/2017 06:53 pm

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.

zubenelgenubi · « **Reply #76 on:** 10/07/2017 10:11 am »

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.

Stranger · « **Reply #77 on:** 10/07/2017 11:31 am »

"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?

FutureSpaceTourist · « **Reply #78 on:** 10/10/2017 12:31 pm »

Quote from: zubenelgenubi on 10/07/2017 10:11 am

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.

EspenU · « **Reply #79 on:** 10/11/2017 06:26 am »

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.