Loading...
Please wait, while we are loading the content...
Similar Documents
Estimates of trapped radiation encountered on low-thrust trajectories through the van allen belts
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Karp, I. M. |
| Copyright Year | 1973 |
| Description | Estimates were made of the number of trapped protons and electrons encountered by vehicles on low-thrust trajectories through the Van Allen belts. The estimates serve as a first step in assessing whether these radiations present a problem to on-board sensitive components and payload. The integrated proton spectra and electron spectra are presented for the case of a trajectory described by a vehicle with a constant-thrust acceleration A sub c equal to 0.001 meter/sq sec. This value of acceleration corresponds to a trip time of about 54 days from low earth orbit to synchronous orbit. It is shown that the time spent in the belts and hence the radiation encountered vary nearly inversely with the value of thrust acceleration. Thus, the integrated spectral values presented for the case of A sub c = 0.001 meter/sq sec can be generalized for any other value of thrust acceleration by multiplying them by the factor 0.001/A sub c. |
| File Size | 854192 |
| Page Count | 18 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19730012113 |
| Archival Resource Key | ark:/13960/t3vt6dq3r |
| Language | English |
| Publisher Date | 1973-04-01 |
| Access Restriction | Open |
| Subject Keyword | Space Radiation Low Earth Orbits Trapped Particles Radiation Belts Radiation Hazards Low Thrust Electron Radiation Onboard Equipment Proton Belts Instrument Packages Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
