Using Satellite Aerodynamics to Sense Thermospheric Winds

Details Using Satellite Aerodynamics to Sense Thermospheric Winds Using Satellite Aerodynamics to Sense Thermospheric Winds

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsa11a1567c&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SA11A-1567

Physics

[0358] Atmospheric Composition And Structure / Thermosphere: Energy Deposition

Scientific paper

It is well known that even in the rarified space environment satellite aerodynamics still play a role in determining parameters such as drag and attitude, and if the aerodynamics are well understood, satellite deceleration can be used to determine the in-track neutral momentum flux or density if a wind velocity is assumed, as clearly demonstrated with the CHAMP and GRACE satellites. In addition to measurement of the neutral density, these satellites have demonstrated how the cross winds can influence the satellite attitude. In this work, it is shown how if the satellite geometry is taken to the extreme of adding a simple long rigid gossamer tail, as with a dart, sufficient sensitivity can be achieved to measure the cross track winds with precision comparable to the in-track density determination.

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