Questions tagged [spacesuits]

Questions regarding the spacesuits that astronauts wear whilst in space

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4
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2answers
107 views

How hot was the surface of RTG radiator which powered ALSEP on Apollo-12?

The last 5 Apollo missions that landed on the moon (starting from Apollo-12) deployed Apollo Lunar Surface Experiments Package (ALSEP) which was powered by radioisotope thermoelectric generators (RTG) ...
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Why do spacesuits have air in the body? [duplicate]

Wouldn’t it be easier to make a space suit that only maintains air around the head, and just has a “tight” insulated and shielded suit around the body? It seems to me the reasons we need a space ...
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1answer
79 views

Short documentary about spacesuit seamstresses

I'm trying to find a short documentary video about people who sew together NASA spacesuits. I saw it quite some time ago -- at least 20 years, maybe longer. Quite possibly on PBS, maybe the Spokane ...
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Design considerations for a space suit going to Mars?

Essentially, I am trying to design a heat exchanger for a space suit traveling to mars. From my understanding, I assumed that the energy generated from the space suit relates to the astronaut as well ...
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Reentry without pressure suits in Apollo: was there a formal risk assesment?

In Apollo 11 Flight Journal the following is stated: The crew will make re-entry without suits or helmets on. Although this was a controversial decision on the first Apollo flight, Apollo 7, when ...
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1answer
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How often did Apollo astronauts wear red helmets?

Images of NAsA astronaut David R. Scott performing a spacewalk during Apollo 9 show a red helmet. When did NASA's use of red-colored helmets begin, and when did it end, and was there a special name ...
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1answer
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Are the EVA suits used in the ISS and in the NBL same or different?

Are the space suits used in the International Space Station (ISS) and in the Neutral Buoyancy Lab (NBL) same or different? They look similar, but they are used in two different media - one in a vacuum ...
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Can we create a vacuum inside an EVA suit when the outside is pressurized, will it implode?

EVA suits are specially designed spacecrafts for astronauts during spacewalks. I can say for sure, it can handle the following cases of pressurization of the system: Pressurized inside, but vacuum ...
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Best (least worst) conditions to “store” an astronaut in a suit for six days?

@GremlinWrangler's answer to How can an Astronaut survive for six days inside a Spacesuit? includes the following: make sure the suit can provide air and water, and adjust the temperature to ...
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How can an Astronaut survive for six days inside a Spacesuit?

In the video #AskNASA | What are the Next Generation Spacesuits?, spacesuit engineer Dustin Gohmert says the following about the Orion Crew Survival Suit (Orange Spacesuit): This suit is also ...
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How are xEMU's rotating joint at waist level shock proof?

Following this question about new spacesuits (xEMU), I was wondering how resistant to shock might be the biggest rotating seal, (at waist level) considering an astronaut might fall or be hit by some ...
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Are ferrofluidic seals used in spaceflight? Main applications? Human-rated?

Comments below this answer have inspired this quesiton. Wikipedia's Ferrofluidic seal sez: Ferrofluid-sealed feedthroughs routinely operate in environments including ultra-high vacuum (below 10⁻⁸ ...
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1answer
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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. ...
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1answer
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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 ...
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8answers
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instead of pressurizing an entire spacesuit with oxygen could oxygen just pressurize the head and the rest of the body be pressurized with water?

Instead the body would be kept from boiling by a thin layer of water that was held down by oxygen up at the head. 1 gallon of water is 8lbs which per inch is what the latest spacesuit is designed to ...
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1answer
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What are these objects near the Cosmonaut's faces?

The obituary "Aleksei Leonov, First Man to Walk in Space, Dies at 85", includes this photo: What are the white objects alongside each of the cosmonaut's mouths? Are they microphones? If so, why two? ...
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592 views

International Orange?

Was the Launch Entry Suit, the pumpkin suit, the first time any space agency used the color International Orange in anything intended to go into space? From International orange; Astronautics: The ...
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3answers
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How do EVA suits manage water excretion?

This answer immediately sparked the question in my mind of how space suits manage water excretion from the person wearing them. I am aware that the astronauts had to wear diapers since one may need to ...
5
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1answer
304 views

Who put their spacesuit boots on the wrong feet?

Was just reading Mike Massimino's memoir Spaceman and came across this fascinating line: Another time a spacewalker - and this is a true story - accidentally put his right boot on his left foot ...
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1answer
83 views

Was any hole in the upper layers of the Apollo suits found caused by a micrometeorite impact?

What about the micrometeorite protection layers of the Apollo suits used for lunar EVA? Was any hole found after landing on Earth?
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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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1answer
324 views

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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1answer
466 views

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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1answer
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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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1answer
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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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1answer
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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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1answer
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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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1answer
215 views

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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1answer
51 views

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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1answer
171 views

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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1answer
199 views

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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1answer
202 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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1answer
91 views

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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1answer
396 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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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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1answer
163 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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1answer
72 views

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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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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How many space suit types could be used at the ISS if Starliner, Crew Dragon and Soyuz were 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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2answers
471 views

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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1answer
118 views

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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1answer
169 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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0answers
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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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286 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 ...