Difference between revisions of "Atmosphere"

From Lunarpedia
Jump to: navigation, search
Line 15: Line 15:
|- style="background:#EFEFEF"
|- style="background:#EFEFEF"
|[[Terrestrial Air|Earth]]  
|101.3 kPa<BR/>
|101.3 kPa<BR/>

Revision as of 07:24, 20 July 2007

Work on this article has outpaced copyediting on it. You can help Lunarpedia by formatting, editing, or tidying it.

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]

Under most circumstances, 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.