Loading...
Please wait, while we are loading the content...
Similar Documents
Satellite lifetime prediction
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Wittenstein, Gerald |
| Copyright Year | 1987 |
| Description | Satellite lifetime predictions are critically dependent on the ability to forecast future solar and geomagnetic activity. These quantities are inputs to the atmospheric model with which values of atmospheric density are computed along a projected orbital path. Density values are combined with the predicted ballistic coefficient timeline to compute drag and predict decay histories. The major uncertainty in making predictions that pertain to the time periods that are years in the future is in the solar and geomagnetic activity projections, although the ballistic coefficient is also frequently in doubt. The study concludes that while present density models are adequate for planning, the inputs to them, particularly solar/geomagnetic activity indices, are unreliable. |
| File Size | 448632 |
| Page Count | 23 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19870011233 |
| Archival Resource Key | ark:/13960/t0cv9d56b |
| Language | English |
| Publisher Date | 1987-02-01 |
| Access Restriction | Open |
| Subject Keyword | Spacecraft Design, Testing And Performance Geomagnetism Aerodynamic Drag Solar Activity Satellite Orbits Atmospheric Models Orbit Decay Performance Prediction Ballistics Cost Analysis Atmospheric Density Solar Cycles Satellite Lifetime Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
