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Results tagged with spacesuits
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user 44272
Questions regarding the spacesuits that astronauts wear whilst in space
3
votes
How are Rotating Joints in a Spacesuit Gas-tight?
These joints are absolutely amazing. Not only do they seal gas pressure, they move with minimal friction, independent of axial pressure on the joint. Any conventional joint design would “lock” due to …
- 27.9k
2
votes
How can space suit gloves be improved?
Pressurized gloves are doomed to be bulky and restrictive since any hand movement which results in a volume change will be opposed by the glove's internal pressure. You ask "Is there a smarter way to …
- 27.9k
2
votes
Are suits in the NBL pressurized differently than during flight?
Question: Is the atmosphere in a suit in the NBL different than it would be in space?
Short Answer: The gauge pressure in the suits is the same. The breathing gas mix is different: Nitrox rather than …
- 27.9k
0
votes
Is space suit using algae for oxygen production possible?
Answer: NO
It would require approximately a metric ton of nutrient to provide O2/CO2 processing for a single person. There are significant difficulties operating such a system in microgravity.
See How …
- 27.9k
1
vote
Non-biological end effectors (hands) in spacesuit design
There has been extensive research on non-biological end effectors. There is an entire industry built around their utility to perform complex, critical jobs.
I’m referring to endoscopic surgical instru …
- 27.9k
5
votes
Accepted
Experience of breathing regular air vs. Nitrox vs pure oxygen at 4.3 psi?
Respiratory gasses interact with the respiratory system, hemoglobin and respiring tissues through their partial pressures.
Room air is 21% O2 @ 760mmHg, or a partial pressure of 160mmHg. So, at first …
- 27.9k
13
votes
Spacesuit with no thermal insulation. Would person inside freeze or overheat?
Answer: It depends on the suit and the physical activity, but for real astronauts in real suits, overheating is a much bigger problem than freezing.
If your Mechanical Counterpressure Suit is breathab …
- 27.9k
3
votes
Overcoming the Moon Dust Problem: Are We There Yet with Spacesuit Technology?
We won't know if we are "there yet" until new suit designs are tried out on the Moon. The problem is certainly being worked on. Check the links below.
Moon dust is abrasive, which causes wear on parts …
- 27.9k
1
vote
Is it possible to construct a way to breathe in space without a helmet?
Answer: No
The body is a complex network of tubes which move gasses and fluids around using very small pressure gradients. The highest gradient is arterial blood pressure, averaging about 120 mHg = 2. …
- 27.9k
2
votes
What policies and capabilities are in place to induce hypothermia for the purpose of reducin...
Answer: No, the capability is not in place to induce therapeutic hypothermia to reduce hypoxic brain damage in a EVA depressurization, or for treating post hypoxic cerebral edema. But maybe it should …
- 27.9k
3
votes
How does it feel to breathe 100% oxygen at low pressure?
Respiratory gasses interact with the respiratory system through their partial pressures.
Room air is 21% O2 @ 760mmHg, or a partial pressure of 160mmHg. So, at first glance, it would seem that breathi …
- 27.9k
2
votes
What factors affect the thickness of EVA spacesuits?
Answer: The thickness of an EVA suit depends mostly on the design strategy to maintain constant volume with joint movement.
A pressure suit must maintain constant volume during movement. Volume change …
- 27.9k
59
votes
Accepted
Why aren't spacecraft and spacesuits pressurised to 2.5 psi (17 kPa) of pure oxygen?
The sum of all partial pressures in the lungs must add up to the ambient pressure, by definition.
The composition of gas inside the lungs includes the vapor pressure of H₂O at body temperature which i …
- 27.9k