The orbit profile for the Atmosphere Explorer requires a velocity adjust capability of 2000 ft/sec/sec and individual maneuvers of up to 24 ft/sec in magnitude. This requirement is met by a monopropellant hydrazine propulsion subsystem which also provides, by virtue of the tank arrangement, a means of adjusting the spacecraft center of mass in orbit, thereby minimizing external disturbance torques. The attitude control subsystem is of the momentum bias type. A large internal flywheel furnishes gyroscopic stiffness and permits rapid changes in operating mode (despun to spinning mode) by controlled interchange of momentum between the flywheel and the spacecraft main body.


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    Title :

    Multimode attitude and orbit control for the Atmosphere Explorer spacecraft


    Contributors:
    Stewart, B. (author)

    Conference:

    American Institute of Aeronautics and Astronautics, Aerospace Sciences Meeting ; 1975 ; Pasadena, CA


    Publication date :

    1975-01-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English






    The Atmosphere Explorer spacecraft System

    Spencer, N.W. / Braces, L.H. / Grimes, D.W. | Tema Archive | 1973



    The Atmosphere Explorer spacecraft system.

    Spencer, N. W. / Brace, L. H. / Grimes, D. W. | NTRS | 1973