Effects of atmospheric winds and aerodynamic lift on the inclination of the orbit of the S3-1 satellite

Details Effects of atmospheric winds and aerodynamic lift on the inclination of the orbit of the S3-1 satellite Effects of atmospheric winds and aerodynamic lift on the inclination of the orbit of the S3-1 satellite

Apr 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977jgr....82.1474c&link_type=abstract

Journal of Geophysical Research, vol. 82, Apr. 1, 1977, p. 1474-1480.

Astronomy and Astrophysics

Astronomy

2

Accommodation Coefficient, Aerodynamic Forces, Lift, Satellite Orbits, Satellite Orientation, Wind Effects, Aerodynamic Drag, Astrodynamics, Free Molecular Flow, Upper Atmosphere, Wind Direction, Wind Velocity

Scientific paper

The paper evaluates the effects of upper atmospheric winds and aerodynamic lift on the changes in inclination of the orbit of the S3-1 satellite and estimates the satellite surface thermal accommodation coefficient. It is shown that the lift force, and hence the inferred values of the zonal wind speed and direction, is quite sensitive to the assumed value of the thermal accommodation coefficient. The inclination data are best fit when the accommodation coefficient is greater than 0.95. Analysis of the zonal winds derived by using different assumptions of the value of the accommodation coefficient indicates that best agreement with current theoretical thermospheric models is attained when nearly complete thermal accommodation is assumed, for an accommodation coefficient equal to unity. Information is provided regarding the diurnal variations of the zonal wind speed and direction at about 175 km altitude.

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