Author Topic: SpaceX F9 : Starlink group 6-54 : CCSFS SLC-40 : 28 April 2024 (22:08 UTC) (Read 9335 times)

Ken the Bin · « **Reply #20 on:** 04/28/2024 03:50 am »

Primary launch opportunity = 2024-04-28 22:08:00 UTC per CelesTrak.

https://twitter.com/TSKelso/status/1784423741742838251

Quote from: T.S. Kelso

CelesTrak has pre-launch SupGP data for the @Starlink Group 6-54 launch from Cape Canaveral on 2024-04-28 at 22:08:00 UTC: https://celestrak.org/NORAD/elements/supplemental/table.php?FILE=starlink-g6-54. Deployment of 23 satellites at 23:13:24.120 UTC. Data for 8 backup launch opportunities also provided: https://celestrak.org/NORAD/elements/supplemental/.

https://celestrak.org/NORAD/elements/supplemental/

Launch: 2024-04-28 22:08:00 UTC. Deploy: 2024-04-28 23:13:24.120 UTC.
Launch: 2024-04-28 22:26:00 UTC. Deploy: 2024-04-28 23:31:24.120 UTC.
Launch: 2024-04-28 23:22:00 UTC. Deploy: 2024-04-29 00:27:24.120 UTC.
Launch: 2024-04-28 23:44:00 UTC. Deploy: 2024-04-29 00:49:24.120 UTC.
Launch: 2024-04-29 00:02:00 UTC. Deploy: 2024-04-29 01:07:24.120 UTC.
Launch: 2024-04-29 01:00:00 UTC. Deploy: 2024-04-29 02:05:24.120 UTC.
Launch: 2024-04-29 01:14:00 UTC. Deploy: 2024-04-29 02:19:24.120 UTC.
Launch: 2024-04-29 01:38:00 UTC. Deploy: 2024-04-29 02:43:24.120 UTC.
Launch: 2024-04-29 01:48:00 UTC. Deploy: 2024-04-29 02:53:24.120 UTC.

Ken the Bin · « **Reply #21 on:** 04/28/2024 08:05 pm »

NSF webcast (video id ggCdqMJOY5Y):

catdlr · « **Reply #22 on:** 04/28/2024 08:13 pm »

SpaceX Broadcast Link on Twitter: (awaiting link to be provided)

Space Affairs YouTube (Re-broadcast): https://youtube.com/watch?v=DOaEurnrB3I

Replay supplied by The Space Dev's (15 min after the broadcast end): https://youtube.com/@thespacedevs/videos

Summary Video provided by SciNews (15 min after the broadcast ends): https://youtube.com/@SciNewsRo/videos

catdlr · « **Reply #23 on:** 04/28/2024 09:45 pm »

Countdown
Hr/Min/Sec   Event
00:38:00   SpaceX Launch Director verifies go for propellant load
00:35:00   RP-1 (rocket grade kerosene) loading begins
00:35:00   1st stage LOX (liquid oxygen) loading begins
00:16:00   2nd stage LOX loading begins
00:07:00   Falcon 9 begins engine chill prior to launch
00:01:00   Command flight computer to begin final prelaunch checks
00:01:00   Propellant tank pressurization to flight pressure begins
00:00:45   SpaceX Launch Director verifies go for launch
00:00:03   Engine controller commands engine ignition sequence to start
00:00:00   Falcon 9 liftoff

catdlr · « **Reply #24 on:** 04/28/2024 09:46 pm »

LAUNCH, LANDING, AND DEPLOYMENT
All Times Approximate

Hr/Min/Sec   Event
00:01:12   Max Q (Moment of peak mechanical stress on the rocket)
00:02:26   1st stage main engine cutoff (MECO)
00:02:29   1st and 2nd stages separate
00:02:36   2nd stage engine starts (SES-1)
00:03:01   Fairing deployment
00:06:09   1st stage entry burn begins
00:06:30   1st stage entry burn ends
00:07:56   1st stage landing burn begins
00:08:17   1st stage landing
00:08:39   2nd stage engine cutoff (SECO-1)
00:54:11   2nd stage engine starts (SES-2)
00:54:12   2nd stage engine cutoff (SECO-2)
01:05:20   Starlink satellites deploy

Steven Pietrobon · « **Reply #25 on:** 04/28/2024 10:44 pm »

Here's the link to the SpaceX webcast.

https://twitter.com/i/broadcasts/1OwxWYWXlMAGQ

Launch has occurred.

https://twitter.com/SpaceX/status/1784706933267816714

Steven Pietrobon · « **Reply #26 on:** 04/28/2024 10:47 pm »

The Space Devs YouTube host of the SpaceX stream.

catdlr · « **Reply #27 on:** 04/28/2024 10:51 pm »

and the summary video:

Steven Pietrobon · « **Reply #28 on:** 04/28/2024 11:21 pm »

"Payload deploy confirmed of 23 @Starlink satellites"

https://twitter.com/SpaceX/status/1784722897187303584

shiro · « **Reply #29 on:** 04/29/2024 02:33 pm »

Some reusability stats for this launch (Starlink Group 6-54):

Booster B1076.13 turnaround time:
29 days 0 hours 16 minutes
(its previous mission was Eutelsat 36D on Mar 30, 2024 UTC).

Out of the six most recent launches, four had a booster turnaround time of less than 30 days, marking another SpaceX achievement in the terms of reusability.

FYI: median turnaround time for Falcon 9 / Heavy boosters is currently 39.80 days *
* – based on the last 30 launches, excluding new first stages.

Launchpad SLC-40 turnaround time:
4 days 23 hours 51 minutes
(the previous launch from this pad was Starlink Group 6-53 on Apr 23, 2024 UTC).

FYI: median turnaround time for SLC-40 is currently 5.08 days *
* – based on the last 30 launches.

The same type of stats for previous SpaceX launches may be found on this spreadsheet online.