The influence of real satellite aerodynamics on the determination of upper atmospheric density was investigated. A method of analysis of satellite drag data is presented which includes the effect of satellite lift and the variation in aerodynamic properties around the orbit. The studies indicate that satellite lift may be responsible for the observed orbit precession rather than a super rotation of the upper atmosphere. The influence of simplifying assumptions concerning the aerodynamics of objects in falling sphere analysis were evaluated and an improved method of analysis was developed. Wind tunnel data was used to develop more accurate drag coefficient relationships for studying altitudes between 80 and 120 Km. The improved drag coefficient relationships revealed a considerable error in previous falling sphere drag interpretation. These data were reanalyzed using the more accurate relationships. Theoretical investigations of the drag coefficient in the very low speed ratio region were also conducted.


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    Titel :

    Environmental dynamics at orbital altitudes


    Beteiligte:
    Karr, G. R. (Autor:in)

    Erscheinungsdatum :

    01.06.1976


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Environmental dynamics at orbital altitudes

    Karr, Gerald R. | TIBKAT | 1976



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    Badgley, P.C. | Engineering Index Backfile | 1966


    Lunar exploration from orbital altitudes.

    Badgley, P. C. / Lyon, R. J. P. | NTRS | 1965


    Radiation environment at high orbital altitudes

    Higgins, P. W. / Lill, J. C. / White, T. T. | NTRS | 1967