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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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30
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4answers
7k views

Why was this Saturn rocket elevated for launch?

This is an image of a Saturn on the launch pad on July 20th 1973 It appears to be resting on an elevated platform that raises it significantly off the ground. Why was this done? It seems like a lot ...
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1answer
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Is NASA doing research on “mini-magnetospheres” to protect crew from radiation in space?

The Phys.org article NASA proposes a magnetic shield to protect Mars' atmosphere says: ...Dr. Jim Green – the Director of NASA's Planetary Science Division – and a panel of researchers presented an ...
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2answers
561 views

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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What crewed space flight landed farthest off-target?

Astronauts are usually prepared to land at a random place on Earth; in case the planned reentry burn fails, but by other means they achieve reentry trajectory, the orbital motion will pretty much ...
4
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1answer
172 views

Were there any manned missions into orbit that went not to the ISS since the end of the Shuttle?

I know the Chinese did some to their own space station, but were there missions like the repair or retrieve missions the Space Shuttle did with for example the Hubble telescope?
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2answers
254 views

Where can I find flight manuals (not familiarization manuals) from Project Gemini?

I have heard about the Project Gemini flight manuals, but have not been able to locate a copy. Perhaps someone here knows if these exist in some form? I am NOT talking about the Familiarization manual,...
4
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2answers
364 views

Lowest amount of people on the ISS at one time

I understand that the ISS is somewhat capable of unmanned control unless a catastrophic error occurs with core instruments, however when the crew is onboard, there is usually a crew of around 6 at any ...
8
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1answer
321 views

Are there other companies than Bigelow Aerospace planning to offer a space hotel?

After reading up on the matter I noticed that there currently are only two options to remain in space for longer than a few hours: International Space Station (US and Russia) assembled in orbit: ...
3
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1answer
788 views

What kind of thermal protection system does the Dream Chaser have?

What is the plan for a thermal protection system on the Dream Chaser and what advantages will it have over the Space Shuttle TPS?
3
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2answers
965 views

Why are meteors, asteroids and comets not used as propulsion for spacecrafts? [duplicate]

I know it would take a lengthy amount of time to reach the asteroids and meteors. After hearing of the Europeans landing a probe on a comet, the first thing I could think of was: "Could this be used ...
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1answer
1k views

What caused John Glenn to see what he described as “fireflies”?

What caused John Glenn to see what he described as "fireflies"? I've heard three different explanations. If it's true that it was pee and sweat, could you explain how and why it was collected, and ...
2
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1answer
181 views

How the interface between de-spun platform and rotating parts of a spacecraft with artificial gravity could work? [duplicate]

You might have seen large rotating wheel space stations with central de-spun hubs or platforms in sci-fi movies like The Martian. My question is, how could the sealing between the rotational and ...
2
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1answer
271 views

How frequently do astronauts revisit ISS?

Two factors at odds: "have experienced crew on the station, efficient since day zero" vs "have more astronauts with the station operations experience, not depending on the same small crew" - how often ...
3
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1answer
712 views

Blimp on Earth, but a glider on Mars?

Could enough surface area be created with a blimp to shed speed using Mars' atmosphere to have a controlled soft landing to minimize the need for retrorockets? Runway would need to be in place. While ...
11
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1answer
421 views

How does the freon compressor work at 0 gravity?

As far as I researched the Freon compressor to cool air has to stay up right not to leak oil into the system? So how does one work in space? What do they use to cool of the air?
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0answers
119 views

Rationale for human presence on Mars in the Apollo era

The Apollo program was motivated by politics; no matter that the Apollo program was conceived before Kennedy's speech, the commitment to make it happen was driven by the need to demonstrate an ...
6
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2answers
839 views

Why did the design for Space Shuttle docking change?

While browsing concepts of Space Station Freedom and other '80s NASA concepts (I love concept art), I noticed that there are some interesting differences in how the Shuttle was intended to dock with a ...
11
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1answer
1k views

How often has the ISS been physically vacant (un-manned)?

Currently six great folks are working in the International Space Station (ISS). I am wondering if it is ever vacant and if there's a rule of thumb (magnitude of order of days, an average or anything) ...
2
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1answer
85 views

are there any posters available with all astronauts/cosmonauts?

The only poster imaging all astronauts at that time I am aware is the one created by NASA in 1967. Are there any follow ups with meanwhile 550 space travellers?
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1answer
55 views

Muscle loss in space

Since loss of muscle is such a big problem in extended space travel I wondered (and practicalty is a different issue) if astronauts could maintain muscle mass by donning oxygen masks and playing a ...
13
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1answer
563 views

How many people have returned to Earth in a different type of vehicle than the one that launched them into space?

Recently we had the 15 year anniversary of Expedition 1 of the ISS. That particular crew launched in a Soyuz (TM-31) and returned on a Space Shuttle (Discovery, STS-102), which I found a remarkable ...
3
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1answer
269 views

how long does it take to have an emergency crewed space launch?

The objective is to launch a crewed spacecraft to lower Earth orbit. Except the perigee must be higher than 100km altitude, there is no other constrain on the orbit parameters. The emphasis is that ...
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0answers
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What would astronauts do in the unlikely event an hole appeared on the side of their spacecraft? [duplicate]

This never really happened in the Apollo missions, or any other rocket launch... but what would theoretically happen if something exploded (let's say, the oxygen tanks) and caused a hole in the side ...
11
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1answer
795 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
623 views

Could a person survive a vent of a compartment large enough to extinguish a fire?

Suppose there is a fire inside a large spacecraft, and there are crewmembers trapped inside. Is it possible to extinguish the fire by venting and then repressurizing the cabin, without killing the ...
3
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1answer
121 views

Brown dwarfs: could they be used to gain velocity in either a gravity-assisted slingshot or an Oberth maneuver? Why or why not?

Are brown dwarfs useful for gaining velocity via gravitational slingshot (or Oberth Maneuver, I'm still fuzzy on the difference to be honest) by a theoretical starship with fusion propulsion looking ...
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1answer
183 views

Are the Boeing CST-100 Starliner and Orion MPCV interchangeable at any level?

Although the Boeing CST-100 Starliner and the Orion MPCV are designed for different missions (LEO vs beyond LEO), one might imagine a mission which could be served by either vehicle. Presumably, both ...
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3answers
433 views

What prevents the current Dragon capsule being used for crew?

Hypothetically, why could the current Dragon not be used for carrying astronauts from space? Since there is always some research material in Dragon, I believe this vehicle has e.g. heat shields. Is ...
36
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7answers
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What are the most serious injuries that astronauts have suffered while in orbit?

Among astronauts in orbit, what is the worst real injury recorded? Has anyone hit himself on the thumb with a hammer or something? Squeezed a finger in a closing door? Gotten poisoned by some leaking ...
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3answers
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What does space look like from space?

We've all seen tons of images taken by astronauts and spacecraft, but many times they are artificially colored, include invisible light spectrums, or have a lot of contrast. I would imagine, without ...
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0answers
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Why is there no common “docking” interface for express rack payloads?

It seems strange to me that given all of the concerns about living space and color palette aboard ISS, the data/power/cooling ports for different mid-deck locker equivalent (MLE) express rack payloads ...
5
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1answer
244 views

Are any parts of the Soyuz capsule re-used or re-manufactured?

Are any parts of the Soyuz capsule re-used or re-manufactured? From a previous post I know it is much too expensive to design the spacecraft for re-use or re-inspection, but can any components be ...
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1answer
1k views

Where do the crew sleep on the ISS? Where are the sleeping quarters?

The ISS currently handles a crew of 6 launched by two Soyuz vehicles. With the advent of Commercial Crew bring 4 a mission, the hope is to run a crew of 7. Where in the ISS do the crew sleep? The ...
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1answer
286 views

What will the new rules, guideliness, and safety measure be for the ISS after NASA kicks out Soyuz?

Will US Policy be that there should be two Boeing CST-100 Starliner or SpaceX Dragon V2 craft attached to ISS at all times for the American segment of the station? Will Soyuz continue to be used?
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0answers
143 views

Would the Moon be a better place than Mars anyways? [duplicate]

Wouldn't the Moon be a better place to send people than Mars? If our goal is to really let humans live on a body other than the Earth, why not use transportation that was already worked-out when most ...
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1answer
97 views

Do astronauts also have a lack of certain radiation which they had on Earth but not in space?

You could think perhaps about sunlight. But a while ago I've read something about astronauts missing some other 'strange' radiation. I forgot what is exactly was. But could it be for example a kind of ...
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6answers
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Will suits worn on Mars lose kilograms of “expendable water” each time they are used?

In this excellent answer I learned that space suits from the Apollo missions and even when used in space walks from the ISS today use water sublimation to remove both body heat and other heat ...
2
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1answer
134 views

Soyuz TMA-19M return

The launch of the next crew to ISS with Soyuz MS 1 has been delayed. Why the return date of the current crew on Soyuz TMA 19M remains unchanged? An extension of their mission for ca. 2 weeks would ...
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5answers
1k views

Why does NASA not replicate existing manned launch systems?

Since the retirement of the Space Shuttle, NASA has depended on contracts with Russia to launch manned vehicles to the International Space Station. The specifics for other manned spacecraft must be ...
13
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1answer
2k views

Did USSR discontinue radio transmissions, relocate ships, to aid the US in response to Apollo 13?

In this article there is following statement by Dr. Ernst Stuhlinger: Let me only remind you of the recent near-tragedy of Apollo 13. When the time of the crucial reentry of the astronauts ...
10
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1answer
397 views

Why do Astro/Cosmonauts refer to things as Russian or American?

I'm watching CSA videos, and have watched numerous documentaries before, and have noticed that both Astronauts and Cosmonauts alike aboard the ISS tend to refer to something as either Russian, or ...
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1answer
1k views

Do astronauts aboard ISS always follow orders?

There have been many documented cases of astronauts not following direct orders during the Skylab and Apollo missions. Some of these have been publicly reprimanded but most have not. Most of the ...
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3answers
287 views

Any interest in crewed mission to Mars without landing?

Would there be any interest in a manned mission to Mars without landing? This could consists of none (just a flyby) to many revolution(s) around the planet. Would it cut a consequent part of the cost ...
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2answers
390 views

What is the distance of the Sun-Jupiter L4 and L5 points relative to Jupiter?

What is the distance between Jupiter and the L4 and L5 points of the Sun-Jupiter system? I need it to attempt to calculate the $\Delta v$ needed to reach Jupiter from there.
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1answer
2k views

Why were ejection seats used in Project Gemini instead of a tower escape system?

In Project Gemini, the Titan II GLV space rocket used as fuel hydrazine and nitrogen tetroxide, so safety concerns over its toxic propellants were present. But along with the special care that was ...
2
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1answer
152 views

Was footage released of the Soyuz TMA-20M crew arrival ceremony?

I couldn't find a YouTube video of the welcome ceremony of the newly arrived crew of Soyuz TMA-20M. Was there no broadcast on NASA TV of this event?
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Could humans live in microgravity indefinitely? [closed]

Astronauts have to exercise daily to prevent bone and muscle loss during long stays on space stations, but I assume this is all in preparation for when they return to the normal gravity of Earth. If ...
3
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2answers
131 views

Could we launch a rubble pile simulant to LEO for astronauts to practice on before visiting natural milligravity objects?

There are proposals and maybe serious plans to send astronauts to asteroids or Mars' moons, objects which are a few kilometers or just a few meters in diameter. I call them "milligravity" objects ...
2
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1answer
342 views

What is the disk on NASA's anti-matter concept design?

On the concept art pictured in this link, we see a very sleek looking ship that would supposedly be powered by antimatter. What is the large disk present on the side of what appears to be the second ...
3
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4answers
736 views

What is the closest to a perpetual motion machine that could be made to work in space?

In the movie "Alien" by Ridley Scott, there's a Drinking Bird which, presumably, the crew activated when entering stasis, and which is still going after they emerge. However anyone who has had one of ...