Other
Scientific paper
Oct 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991p%26ss...39.1405m&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 39, Oct. 1991, p. 1405-1419.
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1
Aerodynamic Loads, Gas-Solid Interactions, Rarefied Gas Dynamics, Satellite Drag, Satellite Orbits, Astronomical Netherlands Satellite, Flow Distribution, Flow Equations, Molecular Flow, Momentum, Orbital Elements
Scientific paper
Tangential and normal momentum-accommodation coefficients are reviewed as a parametrization of the gas-surface interaction for modeling aerodynamic forces on artificial earth satellites. By reference to experimental data and other studies, a simple empirical relationship for the normal momentum coefficients is deduced while the tangential coefficient is taken to be invariant with the angle between the incident stream and the surface normal. Parameters within these coefficients are estimated by least-squares reduction of orbital elements of ANS-1 (1974-70A). Derived results yield a drag coefficient for a sphere of 2.5 +/-0.03, which is less than 10 percent below the accepted values of 2.2 for heights near 300 km.
Moore Patrick
Sowter A.
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