Author Topic: SpaceX F9 / Dragon 2 : CRS2 SpX-22 June/July 2021 (Splashdown 10 July 0329 UTC)  (Read 363275 times)

Offline Jansen

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I would not be surprised if reducing ASDS recovery time is the prime driver here and we start seeing similar optimizations also in other launches - any spare first stage perf goes towards reducing the downrange distance even when there is not enough perf to do a land landing.

There is no spare performance on Starlink launches. It is only external launches that have margins for contingency.

The boostback is necessary to reduce landing weight, as the F9 does not dump fuel like as airliner. Reducing ASDS travel time is just an extra benefit. This is common on CRS launches.

Offline scr00chy

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I would not be surprised if reducing ASDS recovery time is the prime driver here and we start seeing similar optimizations also in other launches - any spare first stage perf goes towards reducing the downrange distance even when there is not enough perf to do a land landing.

There is no spare performance on Starlink launches. It is only external launches that have margins for contingency.

The boostback is necessary to reduce landing weight, as the F9 does not dump fuel like as airliner. Reducing ASDS travel time is just an extra benefit. This is common on CRS launches.

Except that CRS-21 didn't do a boostback burn.

Offline Jansen

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L-2 now 70% GO on primary and backup days, with low risk on additional criteria
« Last Edit: 06/01/2021 01:56 pm by Jansen »

Offline FutureSpaceTourist

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https://twitter.com/thesheetztweetz/status/1399731742462906371

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SpaceX's Cargo Dragon for the CRS-22 mission last week arrived and was mated to a Falcon 9 rocket in Florida, with liftoff scheduled for early Thursday afternoon:
« Last Edit: 06/01/2021 02:24 pm by FutureSpaceTourist »

Offline Jansen

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« Last Edit: 06/01/2021 02:29 pm by Jansen »

Offline FutureSpaceTourist

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https://twitter.com/spacex/status/1399738312282148871

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Falcon 9 and Dragon roll out to Launch Complex 39A ahead of Dragon's 22nd cargo resupply mission to the @Space_Station
« Last Edit: 06/01/2021 02:47 pm by FutureSpaceTourist »

Offline Rondaz

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Dragon Attached to Falcon 9 Ahead of Next Launch to Station

Danielle Sempsrott Posted on June 1, 2021

The SpaceX Dragon spacecraft that will fly on the company’s 22nd commercial resupply services mission to the International Space Station is now ready for its journey to space. On Thursday, May 27, teams transported the spacecraft from SpaceX’s processing facility at Cape Canaveral Space Force Station into the hangar at nearby Kennedy Space Center’s Launch Complex 39A, where it was attached to the Falcon 9 rocket.

Today, June 1, the rocket – with Dragon atop – was rolled out to the launch pad, where it will be raised to a vertical position in preparation for launch. Liftoff of the Falcon 9 is scheduled for 1:29 p.m. EDT on Thursday, June 3. Packed with supplies and payloads bound for the orbiting laboratory, Dragon will deliver critical materials that will directly support dozens of the more than 250 science and research investigations that will occur during Expeditions 65 and 66.

Tune in to NASA TV or the agency’s website for live coverage of prelaunch activities, beginning tomorrow at 11 a.m.

https://blogs.nasa.gov/spacexcrs22/2021/06/01/dragon-attached-to-falcon-9-ahead-of-next-launch-to-station/

Offline FutureSpaceTourist

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Want an in-depth look at the science going up to the International Space Station on SpaceX’s 22nd Commercial Resupply Services mission? Join us on June 2 at 11 a.m. ET we chat with some of the principal investigators.

Have a question for our guests? Leave it in the comments below and we may answer it live during our segment.

Offline SPKirsch

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Erection in progress...

EDIT: now vertical

Credit: Spaceflight Now Livestream
« Last Edit: 06/02/2021 02:30 am by SPKirsch »

Offline Lewis007

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Offline FutureSpaceTourist

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L-1 launch weather forecast now only 60% GO

Offline scr00chy

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Technically, there is still a little bit of time, but it's starting to look like SpaceX is skipping the static fire for this launch. That would be a first for a new booster.

Online abaddon

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Technically, there is still a little bit of time, but it's starting to look like SpaceX is skipping the static fire for this launch. That would be a first for a new booster.
Given all new boosters have gone through a full-duration qualification firing at McGregor, it seems a little surprising it took them this long.  On the flip side, they haven't been that many new boosters for a while!
« Last Edit: 06/02/2021 02:50 pm by abaddon »

Offline scr00chy

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https://www.spacex.com/launches/



Pad photo from SpaceX website attached

No mission patch this time, though
« Last Edit: 06/02/2021 04:02 pm by scr00chy »

Offline Jansen

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SpaceX is targeting Thursday, June 3 for Falcon 9’s launch of the twenty-second Commercial Resupply Services mission (CRS-22). Liftoff is targeted for 1:29 p.m. EDT, or 17:29 UTC, from Launch Complex 39A (LC-39A) at Kennedy Space Center, Florida. A backup launch opportunity is available on Friday, June 4 at 1:03 p.m. EDT, or 17:03 UTC. Following stage separation, SpaceX will land Falcon 9’s first stage on the “Of Course I Still Love You” droneship, which will be located in the Atlantic Ocean. Dragon will separate from Falcon 9’s second stage about twelve minutes after liftoff and autonomously dock to the space station on Saturday, June 5.

Offline Jansen

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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)
00:02:30   1st and 2nd stages separate
00:02:37   2nd stage engine starts
00:02:43   1st stage boostback burn begins
00:05:52   1st stage entry burn begins
00:07:41   1st stage landing
00:08:39   2nd stage engine cutoff (SECO)
00:11:52   Dragon separates from 2nd stage
« Last Edit: 06/02/2021 04:54 pm by Jansen »

Offline soltasto

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"Press kit" capture with OCR

Offline FutureSpaceTourist

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https://twitter.com/spacex/status/1400136179840737281

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Falcon 9 and Dragon went vertical on the pad last night ahead of tomorrow’s launch → spacex.com/launches
« Last Edit: 06/02/2021 05:11 pm by FutureSpaceTourist »

Offline scr00chy

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Prelaunch conference has started:

Offline scr00chy

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Visual mission profile by ElonX.net

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