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Effect of Environmental Forces on the Attitude Dynamics of Gravity Orientated Satellites

Part II—Intermediate Altitude Orbits Accounting for Earth Radiations

Published online by Cambridge University Press:  04 July 2016

V. J. Modi  and
R. C. Flanagan
V. J. Modi
Affiliation:
The University of British Columbia, Vancouver, Canada
R. C. Flanagan
Affiliation:
Department of Mechanical Engineering, University of Toronto
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Extract

In addition to direct solar radiation, this paper includes the effect of direct earth radiation, its albedo and shadow on the attitude dynamics of gravity orientated systems, thus extending the analysis of Part I down to the earth's effective atmosphere. The importance of these radiations was indicated by a preliminary force analysis, which revealed that they can exert a force comparable to that of direct solar radiation for close earth satellites. Thus, the need for a rigorous investigation including the effect of earth radiations on satellite attitude dynamics is evident.

Earth radiation forces were obtained in integral form by Clancy and Mitchell using elementary radiation principles. However, in a test on an IBM-7044 digital computer, it was found that the time required to evaluate these integrals renders a study of satellite attitude dynamics virtually impossible.

Type
Technical Notes
Information
The Aeronautical Journal , Volume 75 , Issue 732 , December 1971 , pp. 846 - 849
Copyright
Copyright © Royal Aeronautical Society 1971 

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References

1. Modi, V. J. and Flanagan, R. C. Effect of environmental forces on the attitude dynamics of gravity orientated satellites: Part I—High altitude orbits. Aeronautical Journal of the Royal Aeronautical Society. November 1971.Google Scholar
2. Flanagan, R. C. and Modi, V. J. Radiation forces on a flat plate in close earth orbits. Presented for publication. Transactions of the Canadian Aeronautics and Space Institute. Vol 3, No 2, pp. 147–158, September 1970.Google Scholar
3. Clancy, T. F. and Mitchell, T. P. Effects of radiation forces on the attitude of an artificial earth satellite. AIAA Journal Vol 2, No 3, pp.517–524, March 1964.Google Scholar