Difference between revisions of "Atmosphere"
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The most important for Lunar development is the pressure inside your [[Space Suits|space suit]] or habitat. Here is a listing of the relative pressures of other environments and the percentage oxygen in each. | The most important for Lunar development is the pressure inside your [[Space Suits|space suit]] or habitat. Here is a listing of the relative pressures of other environments and the percentage oxygen in each. | ||
| − | [[Earth]] | + | {| style="border:1px solid black" |
| − | [[Mercury]] Program (100%) | + | |- style="background:#BFBFBF" |
| − | [[Apollo]] Program (100%) | + | |Location |
| − | [[Skylab]] (70%) | + | |Sea Level Oxygen |
| − | [[Space Shuttle]] (28.5%) | + | |Pressure |
| − | + | |- style="background:#EFEFEF" | |
| − | [[Cabin Pressurization]] [http://en.wikipedia.org/wiki/Cabin_pressurization] | + | |[[Earth]] |
| + | |(21%) | ||
| + | |101.3 kPa<BR/> | ||
| + | |- | ||
| + | |[[Mercury]] Program | ||
| + | |(100%) | ||
| + | |34.5 kPa<BR/> | ||
| + | |- style="background:#EFEFEF" | ||
| + | |[[Apollo]] Program | ||
| + | |(100%) | ||
| + | |34.5 kPa<BR/> | ||
| + | |- | ||
| + | |[[Skylab]] | ||
| + | |(70%) | ||
| + | |34.5kPa<BR/> | ||
| + | |- style="background:#EFEFEF" | ||
| + | |[[Space Shuttle]] | ||
| + | |(28.5%) | ||
| + | |70.0 kPa<BR/> | ||
| + | |- | ||
| + | |[[Cabin Pressurization]] [http://en.wikipedia.org/wiki/Cabin_pressurization] | ||
| + | |} | ||
Generally if you don't get enough [[oxygen]] pressure you will get altitude sickness[http://en.wikipedia.org/wiki/Altitude_sickness#Altitude_acclimatization] | Generally if you don't get enough [[oxygen]] pressure you will get altitude sickness[http://en.wikipedia.org/wiki/Altitude_sickness#Altitude_acclimatization] | ||
Revision as of 15:50, 19 June 2007
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There are several different types of atmospheres to consider.
Lunar atmosphere[1] Earth's atmosphere[2] Atmospheric pressure on Earth[3]
The most important for Lunar development is the pressure inside your space suit or habitat. Here is a listing of the relative pressures of other environments and the percentage oxygen in each.
| Location | Sea Level Oxygen | Pressure |
| Earth | (21%) | 101.3 kPa |
| Mercury Program | (100%) | 34.5 kPa |
| Apollo Program | (100%) | 34.5 kPa |
| Skylab | (70%) | 34.5kPa |
| Space Shuttle | (28.5%) | 70.0 kPa |
| Cabin Pressurization [4] |
Generally if you don't get enough oxygen pressure you will get altitude sickness[5]
In the extreme case of a severe leak in space, you have to consider what the Death Zone does to climbers on Everest [6].
Most desirable for long term habitats in space is somewhere around 40kPa total with about 60% oxygen. In the event of an sudden depressurization this ratio means you do not have a hard transition to switch to your backup breathing systems. The rest is Nitrogen, water vapor and trace amounts of CO2 which can be isolated quite easily.
