Questions tagged [crewed-spaceflight]

Crewed spaceflight (also referred to as human spaceflight or manned spaceflight) is space travel with a crew aboard the spacecraft. When a spacecraft is crewed, it can be operated directly, as opposed to being remotely operated or autonomous.

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21
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5answers
19k views

Why did Armstrong pilot the LM, when Aldrin was tasked as Lunar Module Pilot?

Buzz Aldrin is credited (or was tasked) with being the Apollo 11 Lunar Module pilot. However in fact it was Neil Armstrong who piloted the craft down when the LM guidance computer overflowed, with ...
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Do we still have all the blueprints to go to the Moon? [duplicate]

The answer to Do we still have all the equipment to go back to the moon? is an unambiguous "no". Most of the equipment went to museums or got scrapped. But do we still have all the know-how? Say, a ...
18
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1answer
521 views

How easy would opening an Apollo capsule following dry landing be?

To help frame the problem, I have written the following scenario: It's December 19, 1972 and the Apollo 17 has returned to Earth, but something went wrong and they landed in the middle of the Outback....
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3answers
982 views

Is artificial gravity feasible in manned long-term space exploration?

We know that it is possible for humans to stay physically in shape during long term space missions (see for example Valeri Polyakov who stayed on Mir for more than 14 months for one trip). However, ...
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2answers
773 views

How would the search for life on Mars be affected by having boots on the ground?

It is looking like Mars One might continue to go forward, and even if it doesn't it is fairly likely that we will have people on Mars sooner or later. Have there been any scholarly estimations of the ...
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707 views

Are there any plans to establish depots in space?

Fuel weight is a major limitation on the range of manned spacecraft. It might make sense to pre-position fuel tanks (establish depot/depots) in orbit with different planets and moons to serve as ...
13
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539 views

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% $ ...
13
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1answer
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What are the Grid fins on the Soyuz escape system used for?

Why does the crewed version of the Soyuz rocket use grid fins on its launch escape system? It seems like extra weight to carry along during a portion of the flight. Here's a rendering of the upper ...
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Apollo era remote control of vehicle

I am wondering what kind of ability NASA had during the Gemini or Apollo program era to control the vehicle from the ground. From reading some capcom transcripts and looking through some random ...
10
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2answers
899 views

Would Soyuz meet NASA current rating standards for manned spaceflight?

If NASA were to apply the safety standards it is using on the CCtCAP program (Dragon V2 and CST-100 now chosen) would Soyuz meet those standards? I suppose it helps if we are clear on what the ...
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Could the Apollo LM abort mode be engaged after touchdown? What would have happened if it was?

The Lunar Module had an abort mode where the crew basically just had to push the ABORT button on the control panel, and the ascent stage would detach from the descent stage, followed by the ascent ...
8
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1answer
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Which computer monitors will work on Mars?

In The Martian by Andy Weir, the main character Mark Watney takes a laptop out of the habitation module to take notes. But when he comes out, he discovers that the LCD monitor is broken, because the ...
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3answers
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Have “QR” or other 2D barcodes been used in spaceflight?

Wikipedia: QR code (abbreviated from Quick Response Code) is the trademark for a type of matrix barcode (or two-dimensional barcode) first designed in 1994 for the automotive industry in Japan. ...
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1answer
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What is the highest number of humans in space at the same time and what vessels were they on when it happened?

What is the highest number of human beings in space at the same time, and what vessels were they on when it happened?
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Has any spacecraft had a way for the crew to escape during reentry?

All manned spacecraft to date have come back to Earth eventually, and when they do it's through a flaming ball of plasma. It seems too probable that this plasma would have a way of breaking things ...
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If a human is being sent to space in a rocket, does the seating angle matter?

All manned spacecraft have had seats in an "on-back" angle for launch. What is the benefit of this seating position for a manned spacecraft launch?
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3answers
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Repurposing a nuclear submarine for space travel

Although a nuclear submarine might not make a great spacecraft, would it be possible to repurpose it for space travel? Benchmark: USS Illinois (SSN-786), Virginia-class submarine (born in Virginia, ...
10
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2answers
916 views

With six spacecraft currently docked at the ISS, how could Santa (or anyone else) deliver presents?

This ISS tweet says: Three days after launching from Florida the @SpaceX #Dragon cargo craft was installed to the Harmony module at 10:36 a.m. EST. There are now six spaceships parked at the ...
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1answer
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What kind of time regiment/schedule do ISS astronauts have?

On Earth people's lives are usually dictated by a 24-hour rhythm (with about 8 hours of sleep each night). As far as I know this rhythm is determined by chemical processes in the human body which are ...
10
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2answers
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Have SRBs or SSMEs ever launched without a space shuttle?

It seems to me that the April 12, 1981 launch of Columbia (STS-1) was the manned spaceflight with the most untested hardware of any manned space launch. Even the Vostok and Mercury launch systems had ...
7
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1answer
225 views

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 ...
5
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2answers
394 views

How many times has a spacecraft docked with two or more different space stations during a single mission?

According to this answer, Columbia is the only Space Shuttle not to have docked with more than one space station. For the other shuttles, I think at least most of the time they only docked with one ...
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1answer
156 views

What makes Space Adaptation Syndrome worse?

Are there any particular movements or activities that exacerbate SAS, space sickness?
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2answers
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Fuelling LH2/LOX conectors for Rockets - is it easy to manually attach to the intake nozzles?

I noticed that many rockets come out of the assembly building already with their fuelling umbilicals attached (I mean, with the entire umbilical tower - like Saturn 5, Ariane 5). Once in the launchpad,...
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2answers
217 views

Microscopes in space?

There are a lot of telescopes in space (optical, radio, X-ray and Gamma-ray), but how about microscopes? Does the ISS have a general-purpose microscope? It could come in handy for failure analysis or ...
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1answer
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At what time in the Apollo 14 mission did the maneuver shown in this image happen, and what exactly was happening?

In a search for information for this answer I received this google books link of Comment: The Relevance of Space, by Arthur Kantrowitz, Bulletin of the Atomic Scientists 197, 4 April 1971, pp 32-33. ...
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What kind of lighting does the ISS use? [closed]

Is any feng shui used in lighting? Is the best light bulbs used with filters?
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199 views

Are they building on mars or do they have a camp there? [closed]

They are making vehicles to go to mars with and they haven't gone yet. And it is said that they want to camp there and bring people and even have a space camp.
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5answers
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Could “peak Apollo levels” of support have gotten NASA astronauts to Mars in the 1980's?

In an "alternate universe" where NASA continued to receive a mandate, funding and public support at say peak Apollo levels, could another ten or twenty years have gotten boots on Mars, with astronauts ...
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2answers
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Why are we trying to build a base on Mars before the Moon?

My question is very close to the question answered in the link below and is raised by the answers that question received: Is a Moon-base inherently more dangerous than a Space Station? Why are we ...
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How do the sizes of the various proposed manned capsules differ?

How do the overall dimensions, internal volume, mass of the various manned capsules being developed compare? ...
20
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1answer
4k views

Why choose to crash the Apollo lunar lander ascent stage after it ascended?

What influenced the end-of-life planning for the Apollo lunar lander ascent stage after it ascended and the crew returned to the command module? I was looking at Wikipedia for Apollo Lunar Module. It ...
36
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1answer
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Could the Saturn V actually have launched astronauts around Venus?

One of the more interesting proposed uses of a Saturn V was to launch a manned flyby of Venus. Some of the cargo would have been stored inside the tank of the upper stage, which would be retained ...
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2answers
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When Mir's attitude control computer failed, why did the station immediately start rotating?

Re-reading Linenger's Off the Planet and encountered a question from long ago that I never had found an answer to. During Mir's troubled old age, the attitude control computer would fail frequently. ...
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2answers
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Why do Soyuz landings seem to be overshot?

Soyuz descent module re-entry flight is piloted (one of two modes AUS/computer or RUS/manual), using 8 thrusters, toward the Kazakhstan landing site. The ballistic re-entry occurs only when the other ...
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3answers
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Why do ISS astronauts use lower quality microphones for official radio communication than for PR events?

In the first seconds of this video you can see/hear ISS astronaut Samantha Cristoforetti prepare for a PR event: During the preparation she uses two different ...
23
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3answers
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Why didn't Gemini, Apollo or STS use solar panels?

Short-duration flights (Vostok, Voskhod, Mercury) use several-kWh batteries. Space stations use photovoltaic cells for their high power-to-weight ratio. The longest mission duration accomplished with ...
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1answer
572 views

Has any government published an official recommendation regarding Mars One?

To my knowledge, most governments throughout the world seem to run institutions that give recommendations regarding safety and wellbeing of their citizens when travelling abroad in one form or another,...
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3answers
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How are astronauts in the ISS protected from electric shock?

On Earth, most of the electrical appliances having exposed metal parts, such as electric iron, are grounded, to protect the user from electric shock when an uninsulated-wire accidentally comes into ...
27
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4answers
10k views

If the ISS had an emergency, how long would it take to get a rocket to it?

If there was an urgent need to launch a rocket to the ISS, how long would it take to have a rocket ready to launch? I am trying to understand what factors take up the time to prepare for a rocket ...
26
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5answers
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Have there ever been people trapped in a shut down spacecraft?

I was reading some one-line sad stories and came across this one: Goodbye mission control, thanks for trying. So I was wondering if there have ever been people trapped in a spacecraft without a ...
18
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4answers
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How many astronauts never got to fly in space in their astronaut career?

We know that many people who take astronaut training and become astronauts may never get to fly to space at all. How many astronauts (number or %, or both) have never flown to space in their ...
18
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2answers
601 views

Early high-inclination crewed flights

I noticed to my surprise today that the very early Soviet flights were to a very high inclination - all the Vostok flights were between 64.9° and 65°, and the Voskhod flights were at 64.7° and 64.8°. ...
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1answer
861 views

Did early Russian capsules really have “Human Inside” labels?

This comic claims that it was to prevent people panicking and attacking the crew. However, Vostok pilots were supposed to land separately from the capsule. Are there any photos supporting this claim? ...
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2answers
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How much acceleration g-force can prevent pilot from moving their arms?

Assuming that the craft’s engine is capable of any amount of acceleration, how much g-force would prevent the pilot from being able to move their limbs in order to control the space craft? There is ...
11
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1answer
689 views

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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2answers
904 views

What are the synergies between human landing on the Moon and on Mars?

In what main ways would a human return to the Moon facilitate human travel to Mars? It is often argued that the Moon could work as a stepping stone to Mars. I want to know what the merits are of that ...
9
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2answers
529 views

Would astronauts on the ISS be affected by the radiation from a global nuclear war?

I was wondering what would happen to the ISS astronauts if some global disaster wiped out all ground support. This question tells us that a 2-person crew might survive up to a year on stockpiled food ...
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2answers
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How do we control a Reentering Capsule in the denser part of the atmosphere?

My question is: How do we control a Reentering Capsule in the denser part of the atmosphere? How does the aerodynamics of the Reentry vehicle workout? In other words, how does a reentry module ...
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4answers
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Will any Indian in the final crew of the Mars One missions be in violation of Section 309 of the Indian Penal Code?

Last year the Mars One Foundation invited volunteers for a one-way trip to take up residence with the War-Lord. Over 200,000 humans volunteered; amongst them close to 20,000 Indians. A fraction of ...