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Questions tagged [spacesuits]

Questions regarding the spacesuits that astronauts wear whilst in space

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3 votes
0 answers
76 views

Exploration EVA by donning a dust protection suit over a pressure suit

It seems to me that a pressure suit for the Moon or Mars would be a lot easier to design if astronauts were simply required to don a dust protection suit over the pressure suit before going outside. ...
7 votes
3 answers
300 views

Overcoming the Moon Dust Problem: Are We There Yet with Spacesuit Technology?

I've been mulling over a thought for quite some time now. As we gear up for a return to the Moon and possibly Mars, I can't help but think about one of the major issues from the Apollo missions: the ...
17 votes
1 answer
524 views

Does the SpaceX spacesuit address any of the criticisms of ACES raised by Columbia Crew Survival Investigation Report?

A brief history of what Shuttle crews wore for ascent and entry, from the Columbia Crew Survival Investigation Report: The shuttle was originally designed to be operated in a shirtsleeve (bare-hands) ...
13 votes
2 answers
4k views

Could a deadly fire start within a spacesuit?

At the end of S02E08 of the TV show "For All Mankind", a cosmonaut is shot on the moon and a fire erupts within his suit. My understanding is that the pressure of pure oxygen within a ...
0 votes
0 answers
71 views

What improvements will Axiom Space's Artemis spacesuit bring to current EMUs?

We know a design focus of the Axiom Extravehicular Mobility Unit (AxEMU) is to offer more flexibility for size fitting and movement than current EMUs, both for spacewalks and moonwalks. Based on what ...
6 votes
1 answer
2k views

Could Soyuz spacecraft have saved the Columbia crew?

For the sake of the question, let's assume the STS-107 crew realizes in orbit that the heat shield is too damaged for reentry, but they realize it too late for shuttle Atlantis to rescue them in time. ...
15 votes
2 answers
1k views

Are suits in the NBL pressurized differently than during flight?

I don't know why I've been in a spacesuit mood lately, but the following crossed my mind recently: the flexible portions of NASA'S EMU suits are inflated by the interior pressure the suits in the ...
4 votes
0 answers
196 views

Have external food/drink for EVA suits been considered?

This chat between ex-Mythbuster Adam Savage and ex-astronaut Mike Massimino mentions the danger of getting water inside your helmet in freefall. I idly mused about a (probably stupid) idea: that if ...
13 votes
2 answers
2k views

Are SpaceX new space suits inferior to existing ones in terms of usability?

There is an article in Russian "Why do the American space suits look so different from Russian ones?" which claims that the new SpaceX suits are designed for looks, and have several issues, which, ...
2 votes
3 answers
316 views

Why does NASA suit color coding not follow conventional navigation color coding?

Pictures of NASA spacesuits like the ones below of Neil Armstrong’s Apollo suit (from the Smithsonian) and Gemini suit usually show the right wrist connection red and the left blue. Color coding for ...
2 votes
2 answers
318 views

What mission is this Chris Hadfield photo associated with and what is the location? And what is that thing?

Many, many astronauts have gone on to be wonderful orators, educators, advocates for science, education and positive thinking, Major Tom Colonel (ret) and (fmr) ISS Commander Chris Hadfield is just ...
4 votes
2 answers
258 views

Could you skim along the Karman line using a parafoil?

Imagine a person just wearing a spacesuit equipped with a parafoil returning from low orbit. Could they maintain altitude starting at 7.8 km/s above or along the Karman line slowly losing speed—maybe ...
12 votes
2 answers
2k views

Time to prepare for EVA out of ISS

How much time is needed to an astronaut on ISS to prepare herself for an EVA? Is this time so much different from time needed during Apollo missions?
4 votes
0 answers
224 views

What do I use to make a Neck Ring?

I’ve been working on a homemade space suit, and I’ve been trying to figure out on what to use to make a neck ring. But so far I can’t really find anything, Does anyone know what I could use for the ...
7 votes
2 answers
732 views

Why do the SpaceX suits require "drying" during the mission?

In the period when the Crew Dragon Demo-2 mission was initially docking with the ISS, before the hatches were open, one of the tasks was to "dry the suits". They reported on the status later, ...
5 votes
0 answers
145 views

What are the technical differences between AxEMU and xEMU?

On March 15, 2023, Axiom Space sort-of unveiled their lunar spacesuit, based on the NASA xEMU. I say sort-of because apparently, though the Axiom suit is selected for Artemis III, missions following ...
5 votes
1 answer
366 views

For how long could astronauts stay on the surface of Europa, Jupiter's moon, with our current latest and most advanced spacesuit before dying?

Is it possible for astronauts to land on Europa safely? Given the fact that radiation level on Europa is about 5.4 Sv (or about 540 rem) per day and the temperature is around -260 °F (or about -160 °C)...
2 votes
2 answers
511 views

Lead lined Martian suit

Despite having to transport a significant amount of mass to Mars, would lead lined environment suits be viable, to provide cosmic radiation shielding for Martian colonists? Would carrying that extra ...
1 vote
0 answers
183 views

How to repressurize a vacuum chamber really fast?

There was an accident during a suit test in a vacuum chamber on December 14, 1966. The suit lost pressure and The chamber – which would normally take 30 minutes to repressurized – was blasted back to ...
15 votes
3 answers
3k views

Spacesuit with no thermal insulation. Would person inside freeze or overheat?

Let us say I have a theoretical super thin spacesuit which has zero thermal insulation. As if person would be naked in space, but all other variables - pressure, oxygen, food and other life support ...
2 votes
2 answers
221 views

What policies and capabilities are in place to induce hypothermia for the purpose of reducing hypoxic brain damage in EVA depressurization?

Depressurization incidents during EVA will have hypoxia as the ultimate cause of death or permanent brain damage. If an astronaut’s brain is deprived of oxygen, irreparable damage occurs after about 4 ...
12 votes
1 answer
4k views

Why is the new Artemis suit orange?

In the picture it shows two different suits. Why did NASA color one orange just like they did with the space shuttle astronaut suits?
8 votes
1 answer
252 views

Space Suit for Artemis, why two contracts instead of only one?

NASA has selected two companies to make spacesuits for its Artemis moon program and future International Space Station (ISS) missions. Teams led by Axiom Space and Collins Aerospace (with ILC Dover ...
4 votes
1 answer
571 views

What factors affect the thickness of EVA spacesuits?

Most current extravehicular activity spacesuits are very thick and chunky, like EMU or Orlan. Even though NASA/MIT work on something thinner (Bio Suit), it's not for EVA in vacuum of space, but for ...
4 votes
1 answer
168 views

What are Virgin Galactic Space Suits for? What do they do? What don't they do?

In the CNN video linked below the reporter mentions to Unity 22's Astronaut 004 Sirisha Bandla: When people think of Virgin Galactic, they’re thinking of giving people new astronaut wings like the ...
11 votes
2 answers
931 views

How are Rotating Joints in a Spacesuit Gas-tight?

In Spacesuits, especially in newer ones like the Exploration Extravehicular Mobility Unit (xEMU), there are a large number of rotating joints at different portions like wrists, arms, torso, etc. ...
5 votes
1 answer
1k views

How can space suits hold a pressure when they're handsewn?

Whenever I saw a clip about making spacesuits they always emphasized that space suits, since day one, were sewn by-hand at some particular company in Delaware. How can handsewn anything maintain 5 psi?...
3 votes
0 answers
209 views

Why the Snoopy Cap rather than a conventional headset?

Why do American astronauts wear the "snoopy cap" elastic hood with communications headset rather than a more conventional style of headset that doesn't have a hood? Does the cap provide ...
13 votes
1 answer
3k views

Why is there a white panel in astronaut’s fabric headcover they wear inside the hard helmet?

Astronauts always have a black fabric headcover worn over their hair or scalp, when they are wearing the spacesuit and helmet for takeoff or EVAs. There’s always a white panel that looks about 3 ...
5 votes
1 answer
1k views

How can space suit gloves be improved?

Gloves on space suits are hard to use because of their high gas pressure relative to the surrounding vacuum. It's simply strenuous to bend the fingers and astronauts are even said to lose their nails ...
17 votes
2 answers
2k views

What's the normal leakage rate for a space suit?

What's the normal leakage rate for a space suit? For a modern (as in, the model is still in use today) EVA suit in normal condition, undamaged, etc. If there is a wide variation in leak rates for ...
4 votes
1 answer
104 views

Draper Labs' Control Moment Gyroscope Spacesuit

Back in 2013/2014 Draper Laboratory announced that they were designing and testing a "spacesuit jetpack" that employed control moment gyroscopes (CMG) to allow astronauts to preform EVAs ...
27 votes
5 answers
15k views

What does "double vacuum pressure" mean in space-suit testing?

There was news of the new SpaceX space suit in Reddit and now a mention in Elon Musk's Instagram where he says: First picture of SpaceX spacesuit. More in days to follow. Worth noting that this ...
1 vote
2 answers
763 views

Are the materials presently available to make the SpaceX space suit?

In earlier human space missions we have seen space suits which are really bulky and big in size. But in recent news we saw the latest design by SpaceX, which are seems less bulky and slim as well. ...
7 votes
1 answer
245 views

Moon Suit to be used for the Artemis III mission?

The Moon landing mission Artemis III is scheduled for launch in 2025. It will be the first Lunar crewed mission after Apollo. What is the development state of the moon suit to be used for moonwalks ...
23 votes
1 answer
2k views

Astronauts make a lot of CH₄ and some H₂ as well; do space capsules and space stations have systems to remove these?

While not as much as ruminants, humans emit methane, CH4, natural gas, etc. regularly. While it is less known, we can also emit hydrogen as H2. What are the sources of molecular hydrogen in human ...
7 votes
1 answer
244 views

Do any spacesuit designs (including prototypes, conceptual, etc) use radiators rather than open-loop cooling?

Answers to: How have space suits dissipated the heat removed from astronauts? explain how USA suits currently use open-loop cooling. Typically, space suits must dissipate several hundred watts of heat ...
3 votes
2 answers
509 views

Did an astronaut on the Moon ever fall on his back?

I am curious to know if an astronaut on the Moon ever fell backwards and landed on his back. I have seen many photographs and videos of astronauts who accidentally tripped or lost their balance and ...
1 vote
1 answer
139 views

Do you need to operate laptop computers to run the ISS SSRMS robots Canadarm2 & Dextre? What if there's a pressure loss and you're wearing a suit?

Comments and to some extent the current answer to If an ISS emergency requires pressure suits temporarily, can they still use the laptops? Move the cursor? address a highly unlikely scenario where a ...
18 votes
2 answers
3k views

How did astronauts tie the laces on their gloves?

I've been looking through images from the Smithsonian regarding early space exploration. In particular, I found this picture of a spacesuit glove, that has laces on it. In the picture's description, ...
12 votes
1 answer
543 views

Why do EVA suits have legs?

Why do EVA suits have legs? Planetary exploration suits (PES) obviously need legs. Spacesuits with legs are “a classic icon of human space exploration” and a requirement for mobility. https://www....
5 votes
2 answers
247 views

Non-biological end effectors (hands) in spacesuit design

Designing the 'end effectors' or gloves of a spacesuit is notoriously difficult. Hands have are extremely flexible and are the primary interface that humans use to interact physically with the world. ...
1 vote
0 answers
275 views

Pressurized gloves have significant limitations. What are objective advantages/disadvantages of the alternatives? [closed]

Conventional EVA suits suffer from mobility and tactile sensory limitations due to their pressurization. Any articulated container which changes volume with motion will resist motion if pressurized. ...
24 votes
2 answers
6k views

Why aren't spacecraft and spacesuits pressurised to 2.5 psi (17 kPa) of pure oxygen?

Today 1 atm (101.3 kPa, 14.7 psi) with sea level composition is most commonly used on spacecraft to avoid fire hazards like in Apollo 1 (not that it would have helped the Apollo 1 crew as they couldn'...
29 votes
1 answer
3k views

What are the Advantages of having a Double-pane Space Helmet?

In the following image of Exploration Extravehicular Mobility Unit (xEMU) or Artemis Generation Space Suit, it can be seen the helmet contains double-pane of glass (inside the black rectangle) What ...
4 votes
2 answers
190 views

How long can astronauts wearing Dragon capsule suits walk around unconnected to water coolers?

At various moments in the NASA video NASA’s SpaceX Crew-3 Astronauts Launch to the Space Station astronauts are shown standing or walking or otherwise posing for the camera in their Dragon capsule ...
14 votes
1 answer
1k views

How does it feel to breathe 100% oxygen at low pressure?

Some space suits are designed to provide an atmosphere of 100% oxygen but at a reduced air pressure about 20% that of sea level. Is breathing in such a suit uncomfortable? It seems like having such a ...
4 votes
1 answer
176 views

Experience of breathing regular air vs. Nitrox vs pure oxygen at 4.3 psi?

Has any astronaut/cosmonaut described a difference in the feeling of breathing pure oxygen at 4.3 psi in a spacesuit compared breathing regular air at sea level or even to Nitrox used in the Neutral ...
7 votes
2 answers
737 views

Could you "hose wash" a space suit on the Moon or Mars?

There are some concerns about Lunar dust attaching to the space suits during the Apollo missions. So Suitports are being developed. On Earth, cars get pretty dirty too, but a car wash solves that. ...
42 votes
1 answer
6k views

What is the text on Neil Armstrong's space suit's left glove?

I was looking at the Smithsonian National Air and Space Museum's collection, and Neil Armstrong's Apollo 11 spacesuit has some text written on the left glove. It looks like some sort of instructions, ...

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