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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64
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4answers
14k views

Why do ISS crew members often cross their arms?

I am watching live stream from ISS to follow the return of two ISS crew members, Thomas Pesquet and Oleg Novitskiy. At several moments, they crossed their arms in a not really natural way: Why do ...
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Could Dragon 1.0 be used as an emergency Earth return vehicle

In a completely hypothetical scenario, say both of the Soyuz vehicles docked to the station were damaged/destroyed, but there was a Dragon 1.0 on the station left intact. Although i don't believe it ...
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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 ...
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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 ...
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Do we still have all the equipment to go back to the moon?

That is, does NASA still have all the training equipment, computers and so forth that would be required for a new moon program, or would all of that have to be rebuilt as well as building new rockets?
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If the astronauts on Apollo 11 had landed safely on the moon but could not take off, would there have been a rescue mission?

Say they landed on the moon but discovered the ship was damaged during the landing and they could not launch again. What would have been the plan? Would another crew have been sent to rescue them? ...
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2answers
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Dried beans, rice and oats, jerky, olive oil, salt, vitamins, electrolytes, water; anything else?

If I don't worry about morale, would daily, average sized meals from the following be sufficient to stay alive for three years in space? I'm assuming only water is recovered from waste. Assume enough ...
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1answer
984 views

Real time communications in space

Today we use audio and video communications (using UDP protocol) over IP networks (VoIP) for communicating (Skype, Whatsapp, FB messenger). This works fine on planet Earth (although there are various ...
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Is there a mockup of the ISS on the ground?

Is there a replica of the interior of the space station on the ground? For training astronauts and to try out equipment installations.
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1answer
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Are there studies on human Mars missions available?

Given the poor track record so far for successful unmanned Mars missions (26/55, less than half), and the fact that a manned mission would have to use yet another descent method, let alone a whole lot ...
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Why has the ISS not been left unmanned?

I found this question, and I was wondering why the ISS is constantly manned (Except for some hours during particular situations). Is that a technical problem? Is it to guarantee safety? Or just ...
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1answer
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How will astronauts live in Spacex's red dragon?

If SpaceX's Red Dragon will ever bring astronauts to the red planet, would it need to connect to a deep space habitat? I'm asking because the red dragon seems to be too small for a seven or eight ...
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How is a Deep Space Gateway station in Lunar orbit helpful for going to Mars?

I'm reading that NASA plans to use a Deep Space Gateway, a space station in some kind of Lunar or Lagrange orbit, in order to send astronauts to Mars. How does such a "gateway" assist human ...
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How high *could* a glider reach, to catch a skyhook reaching down from orbit? [closed]

At the beginning of the third part of Seveneves Neal Stephenson describes how the protagonist Kath Two travels from the Earth's surface into the orbit with the aid of a Skyhook-named system. The route ...
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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 ...
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1answer
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Has every passenger been an astronaut? Will they be in the future?

There have been a number of paying passengers on orbital missions in the past, and it is likely there will be many, many more in the future, and not only on orbital missions. I'm thinking that ...
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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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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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6answers
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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 ...
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1answer
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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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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,...
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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 ...
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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: ...
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1answer
912 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?
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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
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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 ...
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1answer
212 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 ...
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1answer
308 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 ...
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1answer
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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 ...
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1answer
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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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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 ...
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2answers
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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 ...
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3answers
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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) ...
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1answer
108 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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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 ...
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603 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 ...
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1answer
312 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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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 ...
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1answer
885 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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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
137 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
217 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
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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 ...
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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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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
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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
2k 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
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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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