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Autonomous aerobraking at mars
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Tolson, Robert Dec, John Cianciolo, Alicia Dwyer Hanna, Jill L. |
| Copyright Year | 2002 |
| Description | Aerobraking has become a proven approach for orbital missions at Mars. A launch of a 1000 kg class spacecraft on a Delta class booster saves 90% of the post-MOI fuel otherwise required to circularize the orbit. In 1997, Mars Global Surveyor demonstrated the feasibility and Mars 2001 Odyssey completed a nearly trouble free aerobraking phase in January 2002. In 2006, Mars Reconnaissance Orbiter will also utilize aerobraking. From the flight operations standpoint, however, aerobraking is labor intensive and high risk due to the large density variability in the Mars thermosphere. The maximum rate of aerobraking is typically limited by the maximum allowable temperature of the solar array which is the primary drag surface. Prior missions have used a surrogate variable, usually maximum free stream heat flux, as a basis for performing periapsis altitude corridor control maneuvers. This paper provides an adaptive sequential method for operationally relating measured temperatures to heat flux profile characteristics and performing maneuvers based directly on measured temperatures and atmospheric properties derived from the heat flux profiles. Simulations of autonomous aerobraking are performed using Odyssey mission data. |
| File Size | 796832 |
| Page Count | 8 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20030014800 |
| Archival Resource Key | ark:/13960/t3pw1fn40 |
| Language | English |
| Publisher Date | 2002-01-01 |
| Access Restriction | Open |
| Subject Keyword | Space Transportation And Safety Solar Arrays Aeromaneuvering Computerized Simulation Mars Atmosphere Temperature Profiles Heat Measurement Heat Flux Spacecraft Maneuvers Numerical Analysis 2001 Mars Odyssey Flight Operations Mathematical Models Aerobraking Heat Transfer Mars Missions Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
