Questions tagged [spacesuits]

Questions regarding the spacesuits that astronauts wear whilst in space

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Apollo suit atmosphere before launch?

What was the pressure and oxygen concentration used in Apollo space suits on Earth before launch and after closing the suit with helmet and gloves during the transfer of the astronauts to the launch ...
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7 votes
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How were Apollo spacesuits cooled during simulations/rehearsals on Earth?

The answer and comments to How have space suits dissipated the heat removed from astronauts? explain that the Apollo space suits used the sublimation of ice into the vacuum of space to constantly ...
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What is this red spacesuit made out of, and why is it red?

The BBC News website often uses this file photo on spaceflight-related pages such as this one. Is it possible to identify the following? the astronaut the spacecraft the spacesuit the external red ...
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What would it feel like for an astronaut if his/her spacesuit ran out of air?

I’m curious what it would feel like if an astronaut’s spacesuit ran out of air while they were on mars, vs taking the suit off? inspired this question
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Do space suits measure "methane" levels or other biological gases?

A comment below Was “I have the farts, again” broadcast from the Moon to the whole world? links to this humorous video clip of the 1997 comedy movie RocketMan about astronauts on Mars. Personnel on ...
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Why was the Communications Carrier Assembly black and white?

I understand the CCA, the headset for NASA astronauts, was made up of lycra and teflon fabrics. Is there a reason, relevant to space flight, that the two materials were different colors?
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Noise inside an ACES/pumpkin suit helmet?

As I understand it there was plenty of noise inside a NASA EVA suit helmet from fans circulating the air. Was the Advanced Crew Escape Suit helmet for launch and reentry similarly noisy?
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ACES helmet and space sickness

I thought I read somewhere that when astronauts removed the ACES helmet it often exacerbated space sickness. ACES (Advanced Crew Escape Suit)-the orange suit worn during shuttle launches Is there ...
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What is the use of a helium tank in this very early space suit design?

The answer to this question included this image from a book by Wernher von Braun he wrote in 1960. This space suit design misses a micro meteroite protection as well as liquid cooling to remove ...
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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. ...
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What would be the longest hypothetical emergency which would confine the Apollo astronauts to their suits?

This answer poses the possibility of an emergency that would require Apollo astronauts to spend the rest of the mission in their suits: A hole in the CSM might be more of an issue, since large ...
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How to replace and refurbish the EMU suit used at the ISS?

If new parts for the EMU suits should be transported to the ISS they may use the Progress cargo space ship. But what about return of used suit parts to ground for refurbishment? A Progress cargo ship ...
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How old are the EVA space suits that are currently used on the ISS?

Scott Manly says in his new video Updates - JPL Visit, Mars 2020, Moon in 5 Year, EVA Changes, Indian ASAT after about 03:25 that the EMUs that NASA uses are ...
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Which would be more prone to regolith-ice-melting issues, a rover's wheels or an astronaut's boots?

This answer to Has NASA “gone south”? Why are astronauts needed to explore the Moon's south pole? and the question What would happen if an Apollo astronaut landed on Pluto? both touch on issues of ...
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Could a pressure suit be used for a short emergency EVA?

What if a docking accident leaves the spacecraft depressurized and unable to re-pressurize. The hatch may be jammed/ punctured or a window blown. In such a scenario, the astronauts would have their ...
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1 vote
1 answer
240 views

What is the purpose of the spacesuit in the crew dragon?

In this picture, in the background, there is a spacex spacesuit. I could not find why they had it. Are they going to use it for a spacewalk? Are they going to test it in microgravity? So my question ...
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Why ISS Astronauts have red stripes?

After seeing the interesting question How do ISS astronauts “get their stripes”?, I was wondering why the color red was chosen for the identifying stripe: I am assuming that red is the best color ...
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How do ISS astronauts "get their stripes"?

This answer shows two astronauts on a spacewalk outside the ISS. The caption reads: Rick Mastracchio as EV1 (red stripes) and Mike Hopkins as EV2 (no stripes) leaving the airlock during US EVA-24 (...
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Conditions on Titan under which human breath can be set to fire

Motivated by the question Titan vs Mars for colonization, I wonder what exactly happens if human exhalation products are released into Titanian atmosphere and, say, a spark igniter happens to be ...
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2 votes
1 answer
763 views

What joints of Apollo 17 space suits did moon dust get into, making the astronauts arms difficult to move?

At about 02:45 the Curious Droid video Apollo, the Lunar Dust and NASA's Dirty Problem says: During Apollo 17, crew members Harrison “Jack” Schmitt and Gene ...
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6 votes
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What is the current state of Squeeze-suit development, as distinguished from gas-pressurized models? [duplicate]

This ten-year-old article on a squeezesuit concept estimates that it is ten years from completion. Ten years have passed, and this article is still the #1 hit on Google, with a couple of other ...
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3 votes
1 answer
460 views

How to get water inside a space suit?

How is water transferred from outside the suit to inside the suit?
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2 votes
1 answer
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What freedom of movement does an untethered, thrusterless astronaut have? - with a 20lb sledge

Considering a suited human space explorer, in free space with no means of thrust or acceleration aside from their dexterity, their own mass, and that of a sledge hammer, what possibilities exist for ...
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1 vote
0 answers
50 views

spacesuit airconditioning [duplicate]

I read that during the EVA, the astronauts body temp. was maintained by the PLSS, by rejecting the body heat, using porous plate sublimator. In this porus plate, water was made to evaporate into space ...
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1 vote
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How many space suit types could be used at the ISS when Starliner, Crew Dragon and Soyuz are all active?

I just watched the CBS news video SpaceX and Boeing competing to capture the American flag in space about the "race to bring the flag home". It got me wondering about the variety of suits. I lose ...
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7 votes
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How does the thin gold film in the glass of spacesuit helmets block thermal IR but transmit visible? What's the property?

Comments below this answer suggest that there is a thin gold coating on the glass of spacesuit helmets that blocks thermal IR (say roughly about 10 to 30 microns) but is mostly transparent to visible ...
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3 votes
1 answer
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Spacesuit needed for 1 psi 100% methane atmosphere - 60 Fahrenheit?

What sort of spacesuit would an astronaut need if she were to walk on a planet with a 1 psi (0.07 ATM) 100% methane atmosphere and -60°F (-50°C) temperatures?
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4 votes
1 answer
360 views

Current and near-future space suit odor reduction technology

Fox News' Bill Nye says Mars colonies won't happen: 'Are you guys high?' gives some highlights of science educator Bill Nye (The Science Guy)'s thoughts on Mars, moving there, living in artificial ...
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3 votes
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What is currently known as the thinnest combination of material to hold 1 atm in space?

What is currently known as the thinnest combination of material to hold 1 atm in space? Note: must define what the composing materials are.
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5 votes
0 answers
493 views

Why is the Sokol suit white instead of safety orange?

The Sokol is a Russian rescue suit that continues to be used today$^{(1)}$ for launch and landing. It protects the wearer from depressurization, but because it has no micrometeroid and limited ...
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2 votes
1 answer
323 views

Current state of the art Mars spacesuit?

What's the current state of the art spacesuit for use on Mars? I'm wondering about things like size, shape, materials, layering, performance, weight and comfort. In particular, how thin can the main ...
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2 votes
1 answer
260 views

Is it possible to build hard shell suit with tighter fit to the body

The only hard shell space suit I know of, NASA''s AX-5, was big, bulbous, and seems to be not very comfortable, although offering zero pre breathing, when entering the suit. What I am thinking, is if ...
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12 votes
3 answers
4k views

How do space suits offer heat protection i.e. during the lunar day?

I didn't know that during lunar day temperature is up to +100°C. This would mean US astronauts were rather to protect against heat than cold? How was this solved (normally, space suits protect from ...
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2 votes
0 answers
87 views

Does the design of Orlan's entry hatch preclude the use of waist bearings?

One major difference between the Extravehicular Mobility Unit and the Orlan space suits is the entry method. EMU uses waist entry while Orlan uses rear entry. The waist entry allows EMU to use a waist ...
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4 votes
1 answer
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Why were EVA suits never silver?

As noted in this question and this NASA webpage, for more than 40 years U.S. and Russian spacesuits for extra-vehicular activities have been white because white reflects heat so that the astronaut ...
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1 vote
2 answers
721 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. ...
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5 votes
1 answer
842 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?...
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3 votes
0 answers
485 views

Combined Mechanical Counterpressure and Gas-Pressurized suits

The "Mechanical Counterpressure" (or SAS) space suit is the holy grail when it comes to mobility, flexibility, and being lightweight however it also has it's share of problems. It's very difficult to ...
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10 votes
1 answer
802 views

What ever happened with that pressure suit design based on elastic tension in contact with skin?

I remember several years ago seeing a pressure suit design based on carefully engineered elastic material in contact with the skin. Instead of pressure on the skin produced by a pressurized gas, the ...
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5 votes
1 answer
377 views

Would it be possible to use a modern Orlan-MKS space suit for a moon walk?

The Orlan space suits are semi rigid with a solid torso and flexible arms and legs. They (the previous models) have been used for space walks in Earth orbit with success from 1985 until now. Their ...
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13 votes
2 answers
532 views

Can modern EVA spacesuit be put on/taken off by single person, without assistance?

Watching TV streams of NASA spacewalks I note that at least one extra crew member helps two spacewalkers before their excursion and after it. Can modern EVA spacesuit be put on/taken off by single ...
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4 votes
1 answer
399 views

Which astronaut boots might it be that inspired Michael Jackson's patent?

The BBC article Doctors explain Michael Jackson's impossible dance move describes the recently published article in the Journal of Neurosurgery: Spine How did Michael Jackson challenge our ...
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3 votes
0 answers
76 views

Are alternatives to spacesuits, like one person pods, being developed? [duplicate]

I'm thinking that for extended zero gee extravehicular activities (say space construction) a single person pod (if that's the right word) would be more all round useful than a space suit. Faceplate ...
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1 vote
1 answer
1k views

What is the procedure when a spacesuit gets a tear in it? [duplicate]

What do you do if you are in space and you get a rip in your spacesuit other than getting right with God? What if you cannot get back to base in time?
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1 vote
2 answers
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Emergency Spacesuit Protection?

In an emergency how much and what kind of protection would a spacesuit provide protecting against an explosive decompression event in the habitat the wearer is in? Can air pressure be accumulated ...
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2 votes
1 answer
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Can air pressure be accumulated this way for a biodome or spacesuit?

Using plastic or rubber or something similar and transparent be inflated with each layer having a increasing pressure lessening the strain on the containing material? When one or two layers fails the ...
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66 votes
1 answer
12k views

Why do astronauts wear heels?

I was reading another question on the site when I noticed the EVA suit sports heels. Why do they put heels on space suits? (cropped detailed view)
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4 votes
1 answer
884 views

Why did Space Shuttle astronauts wear gloves upon reentry?

I read an article about STS 107, in which the crew videorecorded their search for the gloves to put on.
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3 votes
1 answer
614 views

Have astronauts gotten sick on EVA?

In lots of science fiction, people have EVA suits which automatically preform First Aid or administer temporary medical help (such as painkiller injections) so that they can get themselves to a safe, ...
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16 votes
1 answer
1k views

If a living person had been inside Starman's suit, would the launch have been survivable?

The spacesuit in the falcon heavy test launch was a genuine test article. Assuming the suit performed nominally could a person have ridden the roadster into space?
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