Questions tagged [spacesuits]

Questions regarding the spacesuits that astronauts wear whilst in space

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What was the first Soviet/Russian spacesuit to use closed-loop ventilation?

The spacesuit used for the first spacewalk used open-loop ventilation, venting exhaust gases into space: On reaching orbit in Voskhod 2, Leonov and Belyayev attached the EVA backpack to Leonov's ...
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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 ...
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In simple terms, how does the way space suits manage breathable gas differ from how scuba gear does it?

I say "breathable gas" because what's in the tank can be a variety of mixtures and I don't know a single word for gas mixture you can safely breathe. less scientific or clinical sounding ...
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Would've the CO2 scrubbers failed before the O2 supply ran out during an Apollo moonwalk?

This absurd video on Reddit of the Earth blowing up while Apollo astronauts were walking on the Moon got me thinking. Assuming something catastrophic happened to the Lunar Module the moment the two ...
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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, ...
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Where exactly are the Apollo space suit sublimators venting steam into space? is there a photo of an astronaut in space that shows the opening?

This excellent answer to How have space suits dissipated the heat removed from astronauts? shows a diagram including the sublimator unit in the red square where the phase transition of water from ...
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373 views

What are the quickdraws for around the torsos of the crew-1 crew?

From a NASA tweet we can see the crew exiting, with a pair of quickdraws around their chest: Oddly, everyone seems to get a different model: What are these used for?
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How was the “female” SK-2 different from the “male” SK-1 spacesuit?

The SK-1 was the spacesuit worn on the Vostok 1-5 flights. The same article describes the SK-2 suit as "[a]lmost exactly the same as the SK-1 but designed for a woman". It was worn by ...
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Why do astronauts wear spacesuits during launch?

I have noticed that astronauts in every launch I've found wear a spacesuit during launch, like this example from the shuttle. I don't understand this. What kind of problem could cause loss of cabin ...
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Would a duct tape spacesuit be practical?

Spoilers ahead for season 2 of For All Mankind. Essentially duct tape wrapped around the body, over clothing which looks like standard NASA jumpsuits for pressurized environments onboard spacecraft. ...
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Sealing of hatches of Spacecraft capsule, LM and spacesuits

Was there any "plan B" / solution, in case sealing of capsule hatch, LM hatch and spacesuit helmet failed during Apollo missions or any other spacecraft? How did NASA ensure a failproof ...
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Was the SK-1 spacesuit tested in flight prior to Gagarin's historic mission?

April 12 is the 60th anniversary of the first human spaceflight, Vostok 1. As no human had previously been to space, it was also a test of the SK-1 spacesuit that cosmonaut Yuri Gagarin wore. This ...
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Was there ever a suitcase-sized spacesuit?

Were there any spacesuit designs small enough to fit inside a suitcase? Such a suit might be useful in emergencies or as a backup suit. Prototypes are fine. Okay to exclude the helmet if it is too ...
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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 ...
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Why don't astronaut helmets fog up? What's the chemistry and thermodynamics behind keeping the field of view clear even during heavy breathing?

Some space walking involves exercise (e.g. moving heavy stuff around) and the outside surface of a faceplate is constantly radiating its heat out into space. At night that thermal radiation is not ...
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How far will I have to hold my “space binoculars” from my eyes during a space walk?

I'm on a space walk and comet Kohoutek is passing by and I've brought my specially designed space binoculars with me to look at it. I left my Nikon Monarch 8x42 binoculars inside because with an eye ...
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How will the future Mars Space Suit Helmet design protect Astronauts from Martian Radiation?

Mars Space Suit Helmet Visor's were mostly made up of polycarbonate [1], the same material used for EMU's visor for performing EVA in earth orbit. Meanwhile, Mars' radiation is 2.5x higher. How are we ...
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What was the space helmet “vomit port”?

Based upon centrifuge test results, MSC directed Hamilton Standard to modify the space suit helmet. The vomitus port and other obstructions to the line of sight in the downward direction were deleted....
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Atmosphere inside a space capsule and need for spacesuits

Was the internal atmosphere of Mercury capsule and CSMs of Apollo missions filled with pure oxygen at low pressure, and was the ambiance controlled to match closely to that on earth (e.g. humidity, ...
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Is there an easy way to distinguish pictures of the LES and ACES suits?

The Launch Entry Suit and Advanced Crew Escape Suit were the intravehicular suits used on most Space Shuttle missions. ACES was an improved version of the LES, and both earned the nickname "...
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Do astronauts wear G-Suits during the launch?

Nowadays, rocket launches (to the ISS) accelerate astronauts at a maximum of around 3 to 4g (source). I have seen quite a few ...
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Are Mechanical Counterpressure Suits like the BioSuit skin compatible when worn for hours?

Mechanical counterpressure (MCP) suits replace the pressure of the gas in the suit by mechanical pressure. Sweat on the skin may evaporate into the vacuum around the suit. But what about skin ...
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Novel EVA spacesuit designs

I'm looking for a collection of novel EVA suit designs, which are serious (are more than a mere art station create) There is of course the BioSuit: 1, 2.
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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) ...
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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 ...
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Did some Shuttle flights really have no spacesuits aboard? [duplicate]

According to this source, pages 378-382 and 406, there were no launch suits for Shuttle missions STS-5 through STS-33. Instead, crew literally wore shirtsleeves during launch and re-entry, plus anti-...
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Russian Chibis suit

The Russian Chibis suit is operational since 1971 and is used aboard the ISS, are there recent developments in this technology? How effective has it been found in counteracting the tendency of fluids ...
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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 ...
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How are astronaut nametags printed when their family name is first?

It is traditional in English and Russian to print a person's given name before their family name. However, there are some languages where that order is reversed. When flying on an American or Russian ...
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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 ...
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Who transliterates non-Russian names into Russian for space-suit name tags?

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 ...
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Did the Space Shuttle crew have to worry about monatomic oxygen?

Comments below this answer tell us that the Space Shuttle always remained in Earth's atmosphere. When it visited the Hubble Space Telescope or the ISS or Mir it was still in the thermosphere and ...
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Do the Shuttle/ISS EMU suits have model numbers?

Early NASA spacesuits were given model numbers, as described in slide 3 of this NASA Powerpoint. The model numbers were assigned in the format P-#M, where the ...
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Are any parts of Sokol suits re-used?

The Sokol spacesuit is the Russian launch and re-entry suit. They appear to be custom-made for each cosmonaut, with mission patches and nametags sewn on to the suit. Even if the suit as a whole is ...
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Can space suit gloves hear, feel, or otherwise sense information through augmentation? Will they?

@mdouglasbibbey's answer describes a situation where it was impossible to "hear" = feel important information while working on Hubble during an EVA, including haptic feedback when a quick ...
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Do space suit designers exist?

I was just having a closer look at the new space-suits by SpaceX, that were worn by NASA astronauts Bob Behnken and Doug Hurley (image below this question). The design made me wonder about who may ...
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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 ...
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On which celestial bodies could you use the Apollo moon suits too?

If you wore the Apollo lunar suit on celestial bodies other than the Moon, on which bodies would you survive (until oxygen run out)? You obviously couldn't wear them on any (recognized) planet because ...
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Specifications on ISS EVA suit cameras

The suits that astronauts use to preform EVA's on the ISS have some sort of "TV camera" with which they stream analog video back to the ISS and then back to Earth so that we can see it on ...
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Why did the Apollo lunar suits have two visors?

Why did the A7L and A7LB moonsuits have two visors? The astronaut initially had both visors down on his helmet and later during the lunar EVA put the outermost visor up (a yellowish one) and could ...
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A Parmitano ‘maneuver’

Referring to the 2013 incident when Italian astronaut Luca Parmitano suffered a leak in his EVA suit causing water to build up dangerously around his face. By the time he was approaching the airlock, ...
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1answer
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Plans for HUD in next-generation spacesuits

A HUD (Head Up Display) allows a computer to display information directly into a user's line of sight and thus allows them to interface with that computer without needing to look at a tablet or ...
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Could a spacesuit similar to the suit of Felix Baumgartner be used on the Moon and Mars?

Felix Baumgartner, who jumped from the upper stratosphere in the Red Bull Stratos project, wore a pressurized suit in which he could obviously do better than Apollo's astronauts in their A7L and A7LB ...
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Can the Valsalva maneuver or nose-scratching be done inside a SpaceX suit helmet?

Sometimes you gotta scratch your nose. Or you need to perform the Valsalva maneuver (close your nose and mouth, then blow hard) to help make your ears "pop". If you can flip your helmet ...
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How many current or near-future pressure suits are there for use in space in total?

There are some pressure suits primarily for use inside spacecraft and some for use during EVAs. Currently how many pressure suits are used or will be used in the near future; let's say from 5 year ...
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Can an astronaut have a private communication during a spacewalk?

In this NASA page it describes an astronaut remaining in contact during an EVA. While inside these pressurized suits, it's essential that they (the astronauts) remain in constant communication ...
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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, ...
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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, ...
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What sounds do astronauts hear inside their helmets during an EVA?

Besides the communications over the headsets, do astronauts hear any other sounds inside their helmets? Do they hear their own breath? Are there any mechanical sounds audible? Does the circulating ...
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Do launch suits have markings that can distinguish between crew members?

We've had two questions about the red stripes on extravehicular suits, used to distinguish between the suited astronauts. Usually the more experienced or higher-ranking astronaut wears the stripes. ...

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