Questions tagged [recovery]

Refers to retrieving spacecraft or related equipment instead of simply expending it. Use with the related equipment tag(s) (i.e. [rockets]).

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What makes 21st century fairings so valuable that they'd potentially be recovered and re-used?

I've read in @geoff's answer that SpaceX is doing some experimentation that may lead to fairing recovery capability. In fact I remember hearing Elon Musk mentioning a few years ago that it was being ...
uhoh's user avatar
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13 votes
3 answers
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Do 'size of a bus' sized F9 fairings ever float after impact? Are they navigation hazards?

This and this answer describe the Falcon 9 fairings as being quite large, with the payload volume being roughly "the size of a bus" or simply REALLY REALLY big. 13 meters by 4.6 meters and being ...
uhoh's user avatar
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6 votes
1 answer
3k views

What is the burn time for the F9 boostback / reentry / landing burns?

I'm trying to figure out the timing of the 3 recovery burns and the total fuel reserve needed to perform them. [Answers Inlined] Boostback: [30] seconds of 3-engines at full-thrust. Reentry: [20] ...
Dave Dopson's user avatar
29 votes
1 answer
4k views

When/where did the cosmonauts fight wolves?

When/where did the cosmonauts fight wolves? or was it bears? With a gun? Could someone provide a more complete story? One of comments on the article TidalWave linked in the Soyuz joysticks question ...
SF.'s user avatar
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15 votes
1 answer
4k views

Why won't the SLS boosters be recovered?

The SLS will be using five segment boosters derived from the four segment ones used during the STS program. Almost all of the STS boosters were recovered and reused, however NASA doesn't plan to ...
Ezra Bailey's user avatar
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8 votes
1 answer
429 views

Thrown-together $200 million mission to asteroid 2020 SO; check out or nudge to longer-lasting mini-moon orbit

This tweet says in part: Earth's potential new minimoon, 2020 SO may be the Surveyor 2 Centaur rocket body, launched in September 1966. Integrating backwards shows 2020 SO2 to also be orbiting Earth ...
uhoh's user avatar
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20 votes
7 answers
12k views

Why can the Falcon 9 be reused while the SLS cannot?

In reading about SLS, I learned that the reason they won't reuse their rocket is that the weight of the parachutes to enable recovery is too much of a sacrifice. How is the weight of the hardware and ...
Asalt's user avatar
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9 votes
1 answer
425 views

Have there been individual satellites that have been deployed and recovered more than twice?

Have there been individual satellites that have been deployed into Earth orbit (or beyond) and recovered safely back to Earth's surface more than twice? Deployed means it's not a launch vehicle ...
uhoh's user avatar
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8 votes
1 answer
3k views

How long does it take to recover the first stage of the Falcon 9?

When SpaceX recovers the Falcon 9 first stage at sea, roughly how much time passes between lift-off and soft touchdown on the barge?
user3.14159265359's user avatar
8 votes
2 answers
774 views

What is a "re-radiation system"?

In SpaceX's Echostar XXIII Hosted Webcast after T+ 00:03:50 they mentioned the "re-radiation system" as a part of the payload fairing that increased it's value and ...
uhoh's user avatar
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7 votes
1 answer
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Why did the number of recovery ships decrease with time?

This NASA page names the various ocean ships that have helped recover NASA spacecraft. There is a general trend that later missions used fewer ships. Read the link for details, but here are some ...
DrSheldon's user avatar
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4 votes
1 answer
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Is it the Apollo CM "flowerpot parachute attachment fitting"?

An Apollo 17 recovery image of the top of the CM, ap17-S72-55888 from ALSJ. What is the structure inside the red polygon (drawn by me)? Is it the "flowerpot parachute attachment fitting"? ...
Uwe's user avatar
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4 votes
2 answers
428 views

Where did the floatation collar and sea anchor attach to the command module?

When the recovery helicopters arrived after an Apollo splashdown, one of the first tasks was for Navy divers to attach a flotation collar and sea anchor to the spacecraft. The flotation collar kept ...
DrSheldon's user avatar
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3 votes
1 answer
234 views

How can you find out how many times a SpaceX fairing has been reused?

For the past few years, SpaceX has been reusing there fairings. While on some SpaceX webcasts they tell you, others they dont. Is there a way to find out how many times judging from how they appear? ...
Starship - On Strike's user avatar
56 votes
5 answers
14k views

Why doesn't the Falcon-9 first stage use three legs to land?

The immediate thought that would probably come into your mind would be "Because 4 legs is more stable than 3." However that is not always true. 3 legs offer the same or in some cases more stability as ...
Star Man's user avatar
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30 votes
3 answers
7k views

Why won't they recover the Falcon 9 from CRS-14?

According to the upcoming livestream of SpaceX CRS-14 (resupply of ISS): SpaceX will not attempt to recover Falcon 9’s first stage after launch. Why not? Wasn't that the whole point of (among ...
Mast's user avatar
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29 votes
5 answers
3k views

Why no parachutes in the Orion AA2 abort test?

On July 2, 2019, the Ascent Abort 2 test of the Orion spacecraft was performed, with the Orion command module ascending on a solid rocket booster, then firing its launch escape system to safely ...
Russell Borogove's user avatar
27 votes
5 answers
10k views

Why doesn't SpaceX land boosters in Africa?

Apart from the obvious answer that it'd take too long to get the booster back across the Atlantic, why doesn't SpaceX leave the main or centre booster in space a little bit longer and guide it to land ...
ChrisF's user avatar
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13 votes
1 answer
2k views

Why did the Falcon Heavy center core fall off the ASDS OCISLY barge?

On the second flight of the Falcon Heavy, they successfully landed the side cores at LZ-1 and LZ-2, and the center core downrange on the ASDS Of Course I Still Love You. Reports have come in that ...
geoffc's user avatar
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9 votes
3 answers
1k views

Falcon 9 - fuel needed to hop back from a barge

There were multiple mentions of the future ideal first stage ASDS landings - if the mission won't have enough deltaV to do a RTLS, then just land on the barge, refuel and "hop" back to the launch site....
jkavalik's user avatar
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7 votes
1 answer
340 views

Falcon 9 fairings stability on reentry

On the descent of the fairings into the atmosphere how is stability provided? Why does it not start to rotate in a uncontrollable fall but reenter gently without apparently damage on the interior ...
Antonio Cipolla's user avatar