Difference between revisions of "Atmosphere"
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Revision as of 07:24, 20 July 2007
There are several different types of atmospheres to consider.
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|
|Mercury Program||(100%)||34.5 kPa|
|Apollo Program||(100%)||34.5 kPa|
|Space Shuttle||(28.5%)||70.0 kPa|
|Cabin Pressurization |
In the extreme case of a severe leak in space, you have to consider what the Death Zone does to climbers on Everest .
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.