Author Topic: SpaceX F9 : Starlink v1.0 L7 : June 3/4, 2020 : Discussion (Read 89579 times)

IvanDogovich · « **Reply #80 on:** 05/19/2020 04:16 pm »

Quote from: woods170 on 05/19/2020 03:38 pm

Yes. F9 will be rolled back into the barn for weather protection of rocket and payload.

Payload stack (including fairing) will also be de-mated and stored in vertical (upright) position. A Starlink stack doesn't like being stored horizontally for prolonged periods of time (sagging of the stack is just one concern).

Awesome! Thanks for the response!

wannamoonbase · « **Reply #81 on:** 05/21/2020 11:22 pm »

Quote from: woods170 on 05/19/2020 03:38 pm

Quote from: IvanDogovich on 05/19/2020 03:29 pm
What happens to the booster that was on the pad, now that its set to launch in June? Do they take it down and bring it back to the barn?
Yes. F9 will be rolled back into the barn for weather protection of rocket and payload.

Payload stack (including fairing) will also be de-mated and stored in vertical (upright) position. A Starlink stack doesn't like being stored horizontally for prolonged periods of time (sagging of the stack is just one concern).

Also curious how long they can wait before they want to redo a static fire.

Is the cycle time on using the ASDS the limitation on spacing between flights?

gongora · « **Reply #82 on:** 05/21/2020 11:27 pm »

Quote from: wannamoonbase on 05/21/2020 11:22 pm

Is the cycle time on using the ASDS the limitation on spacing between flights?

That seems to be the case right now. They've been doing a lot of work refitting the other ASDS, so hopefully when that's up and running it will be less of a problem.

CorvusCorax · « **Reply #83 on:** 05/21/2020 11:44 pm »

Quote from: wannamoonbase on 05/21/2020 11:22 pm

Quote from: woods170 on 05/19/2020 03:38 pm
Quote from: IvanDogovich on 05/19/2020 03:29 pm
What happens to the booster that was on the pad, now that its set to launch in June? Do they take it down and bring it back to the barn?
Yes. F9 will be rolled back into the barn for weather protection of rocket and payload.

Payload stack (including fairing) will also be de-mated and stored in vertical (upright) position. A Starlink stack doesn't like being stored horizontally for prolonged periods of time (sagging of the stack is just one concern).

Also curious how long they can wait before they want to redo a static fire.

Is the cycle time on using the ASDS the limitation on spacing between flights?

It's the limitation on flights that can't do RTLS. It is a known bottleneck, which is why SpaceX is preparing a second droneship.

The reason they bother doing a SF is because it's a used core has just been going through reentry, landing and refurbishment.

I don't think they would redo the static fire. At least not for a low profile launch such as Starlink. After all, technically every launch starts with a mini- static fire - launch clamps only release if the on board computer says it's passed.

So unless there's additional cause to check out the rocket - because it's either brand new or just came back from space, why would they?

zubenelgenubi · « **Reply #84 on:** 05/25/2020 10:28 pm »

Spaceflight experts:
What is the Falcon 9 history with respect to Static Fire "re-do's"?

Also, how quickly could this Starlink launch from SLC-40 follow a successful launch of DM2 from LC-39A? Is it dependent on the turn-around of OCISLY?

FutureSpaceTourist · « **Reply #85 on:** 05/25/2020 11:52 pm »

https://twitter.com/nextspaceflight/status/1265055392528130048

Quote

McAleenan: The 30th and 31st look much less dynamic [in terms of weather.]

Koenigsmann: Next Starlink mission in early June depending on the droneship availability.

russianhalo117 · « **Reply #86 on:** 05/26/2020 12:03 am »

Quote from: zubenelgenubi on 05/25/2020 10:28 pm

Spaceflight experts:
What is the Falcon 9 history with respect to Static Fire "re-do's"?

Also, how quickly could this Starlink launch from SLC-40 follow a successful launch of DM2 from LC-39A? Is it dependent on the turn-around of OCISLY?

Solely dependent on which ASDS becomes available. JRTI could see operations as early as June.

Mammutti · « **Reply #87 on:** 05/27/2020 11:55 am »

Possible launch dates:
2020-06-02 01:38 UTC
2020-06-03 01:17 UTC

Quote

ATLANTIC OCEAN - FLORIDA - CAPE CANAVERAL: EASTERN RANGE OP# X0056 FALCON 9
Eastern range will be conducting hazardous operations surface to unlimited within portions of Warning Areas W497A, W497B, W137F/G, W138E,
W139E/F, W140E, W122 and the following Hazard Areas.

A: From 2836 55.22N 8036 0.35W
TO 2848N 8024W
TO 2854N 8017W
TO 2917N 7949W
TO 2915N 7946W
TO 2841N 8017W
TO 2834N 8025W
TO 2831N 8031W
TO 2830 25.65N 8033 0.42W to beginning

B: From 3158N 7658W
TO 3309N 7558W
TO 3323N 7536W
TO 3323N 7456W
TO 3315N 7437W
TO 3248N 7435W
TO 3229N 7459W
TO 3140N 7642W to beginning

Hazard periods for primary launch day and backup launch days;
Primary launch day: 02 / 0133Z thru 02 / 0331Z Jun 20. Preferred T-0 is 0138Z.
Backup launch day: 03 / 0112Z thru 03 / 0310Z Jun 20. Preferred T-0 is 0117Z.

https://www.navcen.uscg.gov/pdf/lnms/lnm07212020.pdf

Elthiryel · « **Reply #88 on:** 05/27/2020 12:03 pm »

Even if Crew Demo-2 launches today, using OCISLY for this mission would require ASDS turnaround of less than 6 days.

JRTI has done some sea runs recently, so it may indicate it's ready to support Starlink-8.

matthewkantar · « **Reply #89 on:** 05/27/2020 03:17 pm »

We will know JRTI is ready for action when we see the SpaceX logo on the deck refreshed.

zubenelgenubi · « **Reply #90 on:** 05/29/2020 05:52 pm »

Any activity at SLC-40 preparing for this launch?

AndrewRG10 · « **Reply #91 on:** 05/30/2020 09:34 pm »

JRTI has departed in what is believed to be for Starlink 8

https://twitter.com/SpaceXFleet/status/1266840103533584384

Quote

SpaceX's second droneship is now departing Port Canaveral.
'Just Read the Instructions' has been under construction for the past few months but is now all-but complete.
This is unrelated to today's Demo-2 mission.

Quote

Believe this will be in support of the previously postponed Starlink mission. Possible launch dates are:
2020-06-02 at 01:38 UTC
2020-06-03 at 01:17 UTC

SpaceOffshore · « **Reply #92 on:** 05/30/2020 09:47 pm »

No guarantees on that tweet as I say. I'm pulling the info from the same mariner notices you'll are looking at.

wannamoonbase · « **Reply #93 on:** 05/30/2020 10:26 pm »

Excellent love the tenacity, can’t wait to see JRTI in action.

Every Starlink launch brings the Beta test closer.

SpaceOffshore · « **Reply #94 on:** 05/31/2020 01:42 am »

Quote from: SpaceXFleet on 05/30/2020 09:47 pm

No guarantees on that tweet as I say. I'm pulling the info from the same mariner notices you'll are looking at.

Droneship trajectory now matches the LZ position of the previously postponed Starlink launch so I am willing to stick my neck out on a Starlink launch this coming week.

Michael Baylor · « **Reply #95 on:** 05/31/2020 02:23 am »

Launch NET June 3rd with a JRTI recovery, per NSF L2.

FutureSpaceTourist · « **Reply #96 on:** 05/31/2020 04:30 pm »

L-3 launch weather forecast is 80% GO

zubenelgenubi · « **Reply #97 on:** 05/31/2020 06:11 pm »

Quote from: zubenelgenubi on 05/29/2020 05:52 pm

Any activity at SLC-40 preparing for this launch?

Following DM2's successful launch on May 30 from LC-39A, any activity at SLC-40? Preparations for a static fire?

salpun · « **Reply #98 on:** 05/31/2020 06:17 pm »

If they don't static again will this be the first time they de stack and then fly without a new one?

Lars-J · « **Reply #99 on:** 05/31/2020 06:18 pm »

Quote from: zubenelgenubi on 05/31/2020 06:11 pm

Quote from: zubenelgenubi on 05/29/2020 05:52 pm
Any activity at SLC-40 preparing for this launch?
Following DM2's successful launch on May 30 from LC-39A, any activity at SLC-40? Preparations for a static fire?

Didn’t they already have a static fire before the launch was delayed? There is probably no need for another given the relatively short delay.