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Questions tagged [capsule]

A space capsule is an often manned spacecraft which has a simple shape for the main section, without any wings or other features to create lift during atmospheric reentry.

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Would the right shape dimple heat sheild create more wake? [closed]

In this question: Would a dimpled heat shield reduce heat transfer during reentry? the answer says no it would not help more or less. My new question is would reverse dimples or bumps or a ring/s ...
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Have Air-breathing Engines ever been used on a reentry vehicle, could they be?

For the purpose of this question I would like to assume there is no risk of life for the astronauts, or that the design would only be used for delivery of a non-ethically-sensitive payload. Looking at ...
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Roughly what is the rate of energy loss of survivable capsule re-entries?

In this answer I've estimated the peak rate of energy loss of a particularly unwise re-entry as 3 to 4 gigawatts. Never mind that it's 15-20 gees of acceleration, that's a lot of power injected into ...
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Which Apollo Command Module is pictured here?

I recently requested help identifying what turned out to be a Sikorsky JRS-1 on Aviation.SE. One of the comments in my post led to this follow up. In the same picture there is what I'm pretty certain ...
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Are crewed capsules equiped to land pretty much anywhere in the world?

Based on this question it sounds like if something goes wrong it's pretty easy for a crewed capsule reentering from space to go way off target. Does that mean that the capsules are equipped to land ...
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Is the Shenzhou-11 crew's capsule just launched windowless?

It appears that the crew capsule in today's launch of the Shenzhou-11 crew has no windows. Windows present a lot of design tradeoffs, but can come in handy in some situations. Is this capsule ...
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Decision Factors for using 100% $ O_2 $ cabin atmosphere in early US space program

What are the reasons for deciding to use a 100% $ O_2 $ cabin atmosphere in the early US space programme? Was danger of nitrogen narcossis a factor? Did all missions prior to Apollo 1 use a 100% $ ...
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Why does Soyuz use a single large parachute vs 3 on most American capsules?

Apollo, Gemini, (Not Mercury), Dragon, CST-100, the set of American capsules all seem to use three parachutes for landing the capsules. This seems like it makes sense. They are usually designed for ...
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Why did SpaceX choose to use Hydrazine over newer “green” propellants for Dragon 2?

Firstly, I understand the need to use hypergolics over cryogenics as part of Dragon 2's abort and landing sequence - they provide "instant on" thrust and are throttlable with very wide margins (...
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How do space capsules float on water?

I understand that there are flotation devices on the space capsule but I don't see them visibly deployed in this image . There are other images where they are deployed and clearly visible above the ...
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Could Orion capsules be reused?

While watching this video animation of Orion EFT-1, a question occurred to me. Previous capsules (Apollo, Gemini, Mercury) were used once and then relegated to museums (apart from a few test flight ...
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Does the hull of a spacecraft acquire a charge during its rapid ascent through Earth's atmosphere?

Known fact: Heat causes a charge to accumulate on the hull of a craft at reentry. Questions: Does the hull acquire a charge during the course of its ascent too? What magnitude is this charge? (My ...
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Why is it that during reentry phase a capsule cannot communicate with mission control?

During reentry phase into the Earth's atmosphere the heat produced by air friction does not allow any communication with the surface. Why does the heat interfere with electronic frequencies and ...