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The space station neutral gas environment and the concomitant requirements for monitoring
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Carignan, George |
| Copyright Year | 1988 |
| Description | At 340 km, for typical conditions, the neutral atmospheric density is several times 10E8/cc and is thus more abundant than the ionized component by several factors of 10. At that altitude, the principal series is atomic oxygen with 10 percent N2, and 1 percent He, and trace amounts of O2, H, N, NO, and Ar. The constituent densities are highly variable with local time, latitude, and geophysical indices. The physical interaction with surfaces at orbital velocity leads to large buildup of density on forward faces and great depletions in the wakes of objects. Chemical reactions lead to major modifications in constituent densities as in the case of the conversion of most colliding oxygen atoms to oxygen bearing molecules. The neutral environment about an orbiting body is thus a complex product of many variables even without a source of neutral contaminants. The addition of fluxes of gases emanating from the orbiting vehicle, as will be the case for the Space Station, with the associated physical and chemical interactions adds another level of complexity to the character of the environment and mandates a sophisticated measurement capability if the neutral environment is to be quantitatively characterized. |
| File Size | 198210 |
| Page Count | 3 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19890006424 |
| Archival Resource Key | ark:/13960/t49p7z19m |
| Language | English |
| Publisher Date | 1988-11-01 |
| Access Restriction | Open |
| Subject Keyword | Spacecraft Design, Testing And Performance Neutral Gases Outgassing Oxygen Monatomic Gases Contaminants Aerospace Environments Wakes Gas Analysis Orbital Velocity Atmospheric Density Space Stations Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
