Questions tagged [oxygen]
Questions regarding consumption and production of oxygen
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How will the Polaris Dawn cabin pressure and oxygen partial pressure dovetail with that of their EVA suits? (100% oxygen?)
CNN's September 10, 2024 SpaceX’s Polaris Dawn mission just made history. But the riskiest part is still to come says:
The Polaris Dawn crew’s pre-breathe routine, however, will last about 45 hours, (...
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Why will the Polaris Dawn "pre-breathe" be so long (45 hours) and gradual? What are the proposed advantages over a short one?
CNN's August 19, 2024 SpaceX is about to send four people on a wild — and risky — mission into the radiation belts. Here’s what to know includes:
Almost immediately after reaching space, the Polaris ...
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What (if any) pre-breathes were "attempted" on the ISS, and why?
CNN's August 19, 2024 SpaceX is about to send four people on a wild — and risky — mission into the radiation belts. Here’s what to know includes:
Almost immediately after reaching space, the Polaris ...
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Is there a way to add gaseous hydrogen and oxygen to RPA(rocket propulsion analysis software)?
I want to add gaseous oxygen and hydrogen propellants to RPA(rocket propulsion analysis software) for an analysis I am trying. I am wondering if there is some already existing plugin to do this or if ...
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What caused the LOX leak on Falcon 9?
On July 11, 2024, the second stage of the Falcon 9 had a LOX (Liquid Oxygen) leak in the second stage and it couldn't perform SES-2 (the second upper stage burn), causing the Starlinks onboard to be ...
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How much is the estimated amount of ilmenite present on Lunar surface?
I wanted to gauge estimated amount of ilmenite that can be extracted from Lunar regolith. From that, ultimately I want to derive the amount of oxygen that can be extracted out of it. Any estimate or ...
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Atomic oxygen and UV Radiation qualification tests for a cubesat
I'm the Assembly, Integration and Verification Engineer of a cubesat project developed by students. Currently I'm trying to create the specifications for our payloads upcoming (mon)atomic oxygen (ATOX)...
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What stages of distress occur to a person when there is a small hull breach in space?
I'm working on a short sci-fi game and I'm curious about how the effects of a hull breach in a confined area play out. For perspective, let's say a very confined space of 100 cubic feet of normal, ...
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Measuring Oxygen Quantity
How did the Apollo program measure Oxygen Quantity? The Command Module had a Pressure Gauge and a Quantity Guage for the oxygen bottles. Measuring pressure is simple, but I don't see how quantity is ...
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What is the reason for a LACE rocket to dump fuel?
The concept of LACE sounds awesome, especially the part "fuel is hard to come by in the atmosphere but there's some oxidizer available".
The inefficiency due to the heat exchange ...
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How are oxygen and nitrogen replenished in the storage tanks on the ISS?
How they add gases to high pressure tanks. Will the supply trucks bring it? And how will it be connected?
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Are there any short-term survivable locations in the solar system, outside of Earth?
Are there any known natural locations (i.e. not counting ISS) in our solar system (outside of Earth) where a human being in street clothes (i.e. without a spacesuit or other specialized equipment) ...
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How much algae would you need to fully support a person?
Recently, I saw a video on Cody'sLab, where an “algae panel” was constructed. This is set up like a solar panel and uses algae to convert light and air into food and oxygen.
This got me wondering how ...
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What fraction of the Kapton thickness on the ISS' solar panels was likely eroded throughout their lifetime? Predictions? Measurements?
Background
@Tristan's answer to How are the silicon PV cells constructed in the ISS's solar panels? Are they as flexible as they appear here? informs us that Kapton is part of the "blanket" ...
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Oxygen Generation System
Is there any possible failure that OGS (oxygen generation system which ISS has) can overproduce oxygen in a spaceship? Just wondering the possibility how can spaceship explode by themselves without ...
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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'...
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What transportation energy “currency” would be most suitable for mobile machinery on the Martian surface?
What transportation energy “currency” (methane, H2, electricity) would be most suitable for mobile machinery on the Martian surface?
Photovoltaic (PV) cells or nuclear energy will likely be the only ...
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What are opinions of most planetary scientists on this study (link below), were there already some complex reviews in scientific journals? [closed]
I remember this two year old article from Universe Today https://www.universetoday.com/144402/science-fiction-might-be-right-after-all-there-might-be-breathable-atmospheres-across-the-universe/ about ...
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Can the cryogenic expansion of liquid oxygen and liquid hydrogen be used to pump a rocket engine?
A common fuel amongst rockets is that of the combination of cryogenic liquid hydrogen and liquid oxygen. I looked at the design of a simple rocket using this cocktail that is the propellant and found ...
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Self-sustainable Hermetically Sealed System: Humans & Plants
Somewhat related to How many plants would be needed to produce oxygen enough for 20 humans?
Suppose a number of humans are closed in a large hermetically sealed room on Earth with a glass (or other ...
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How much oxygen can MOXIE produce?
So MOXIE is using solid oxide electrolysis to produce Oxygen.
I assume the amount of oxygen MOXIE can produce is limited so how much can it produce before the solid oxide electrolyzer cell stops ...
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Is CO + O ==> CO2 a possibility for propelling rockets off Mars? [duplicate]
Perseverance, the Mars rover, includes an experiment called MOXIE. This is a technology demonstration to show that Mars' atmospheric carbon dioxide can be broken into carbon monoxide and oxygen. ...
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Could we intentionally contaminate another celestial body with life to start producing oxygen?
My question is simple, could we "nuke" a planet with life to create an atmosphere over time?
I was seeing a documentary about Jupiter's moon, Europa, and how it could have hydro thermal ...
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How is CO₂ scrubbed from the air in a space vessel?
Within a space vessel such as the ISS for example, how do the astronauts regulate the level of CO₂ they are breathing and how is the air scrubbed exactly?
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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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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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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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What about recycling used lithium hydroxide on the Moon?
Lithium hydroxide was used to remove exhaled carbon dioxide from breathing gas during the Apollo mission.
Is there any research done how to recycle used lithium hydroxide on the Moon? Separating the ...
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How is it proposed to extract oxygen from lunar regolith?
Futurism's news item NASA Pumps Funding into Startup That Says It Can Harvest Oxygen From Lunar Regolith says:
NASA just awarded substantial funding to Pioneer Astronautics, a company that claims it ...
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What effects did the different air pressure and air composition in certain spacecraft have on astronauts?
The Mercury and Gemini spacecraft, and in space the Apollo spacecraft, didn't pressurize their cockpits to 1 atm with Earth-like atmospheric composition; instead, they used pure oxygen at much lower ...
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How are cryogenic fuels and oxidizers generated and procured?
I understand hydrogen can be generated from steam-methane reforming or from electrolysis of water and then cooled to liquid through a series of cryogenic coolers. For steam reforming, the hydrogen ...
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How much energy would be needed to liquify 1 gram of atmospheric oxygen on Mars?
I've been told I have no Moxie but I still need oxygen to live on Mars. I see that Mars' atmosphere is 0.14% oxygen and my sad moxiless self wants some.
I want to make a low power refrigerator to ...
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How many square meters of solar panel to power a MOXIE-like oxygen source per person?
If I wanted to live in a box on Mars to write my screenplay about living in a box on Mars, how many square meters of solar panels would I need to power a MOXIE-like CO2-to-O2 converter in order to ...
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What was pressure and temperature of LM oxygen tanks?
After analysing comments in related question
How cryogenic oxygen was heated up for CM cabin repressurization?
It appears that LM had oxygen stored as either gas or supercritical fluid but not at ...
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How cryogenic oxygen was heated up for CM cabin repressurization?
In related question How was temperature and humidity maintained inside the Apollo mission capsules?
the basic concept of conditioning Apollo mission capsules environment is described.
After ...
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Algae Bioreactor for O2 and CO2 (and food?) - Any data on required size and power requirements?
I believe that the requirements for a single persons $\require{mhchem}\ce{O2}$/$\ce{CO2}$ balance run somewhere in the region of $8m^2$ of algae, which would seem to be possible in a single $\approx ...
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Why would oxygen be stored as a super critical fluid?
Organic Marble just answered a question about Apollo 13 in terms of the storage of Oxygen, and posted some fascinating stuff, including the fact that Oxygen was stored as a super-critical fluid.
I ...
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What does "stirring tanks" mean?
The Apollo 13 disaster occurred right when the "oxygen tanks were stirred".
What does that mean?
What benefits does it give?
What would happen if they didn't stir the tanks?
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What is the best oxidizer? [duplicate]
I was wondering if there is a more efficient alternative to plain o2? Also, I know this is adding another question, but could you make a functioning rocket with ozone(O3) as an oxidizer(if it is ...
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Could the sulfuric acid in the atmosphere of Venus be heated enough by concentrated sunlight to create water and oxygen?
The atmospheric pressure and temperature at about 50 to 60 km above the surface of Venus is nearly the same as that of the Earth, making its upper atmosphere the most Earth-like area in the Solar ...
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How long were the Apollo astronauts allowed to breathe 100% oxygen at 1 atmosphere continuously?
This answer explains that from the time they suited up "in the Suit Lab before launch" until the time the capsule started depressurizing during ascent, the Apollo astronauts were breathing 100% oxygen ...
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In principle, could the oxygen tanks of an 'air breathing' rocket, be filled during ascent?
(Thinking of SABRE and it's heat exchanger).
As I understand it, Skylon would take off with full oxygen tanks.
Putting aside engineering difficulties, is there a thermodynamic reason why a hybrid ...
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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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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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How does SpaceX plan to obtain Oxygen in Mars?
In the ISS they obtain Oxygen from water through electrolysis. I guess this could be possible in Mars if they land near a large water source.
NASA in the other hand, it's working for ways to obtain ...
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Pressurized Organic Oxygen Pods
Human waste could be used in a hydroponics facility to grow algae in space or Mars in pressurized tanks, and the photosynthesis can be used to convert CO2 to breathable oxygen. A carbon dioxide ...
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Can carbon dioxide be distilled from a Helium/Oxygen atmosphere by using natural refrigeration?
A simple air compressor compress carbon dioxide/water saturated helium/oxygen air in a tank to liquefy water from the air by pressure. Abstract the water, then refrigerate the carbon dioxide/helium/...
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Iron powder reaction in chlorate candle [closed]
When a sodium chlorate candle is ignighted, the iron powder is burned to allow the oxygen to be released with the reaction
2NaClO3 → 2NaCl + 3O2
The iron powder is not included in this equation, and ...
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What would happen if an astronaut walked on mars without a spacesuit i.e. wearing just earth clothes? [duplicate]
Which will happen first: Would she die due to lack of oxygen/suffocation or due to lack of pressure/boiling bodily fluids?
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Martian Carbon Dioxide Turbine Oxygen Generator
How much solid Carbon Dioxide can be collected in a container with the top of the container level with the ground during a Martian Winter?
Side Question: What do you call a generator that runs on the ...
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