Attitude Control and Energy Storage (ACES) is a concept which synergistically combines two key spacecraft functions into common hardware capable of maintaining three axis control over the attitude of the spacecraft and supply spacecraft electrical power during the eclipse. High speed reaction wheels produce control torques by reaction with the spacecraft structure via a high efficiency bi-directional energy conversion device (motor/generator). Recovery of the energy stored in the reaction wheel drastically changes the optimization criteria normally applied to reaction wheels for spacecraft. The power dissipated in the armature of the motor/generator is found to be independent of wheel design speed. Therefore attitude control torques can be efficiently provided with high speed reaction wheels. A minimum of four wheels are necessary to control the four variables, three torque vectors, and power. Low earth orbiting spacecraft with a typical orbit period of 90 minutes place and demanding role on the energy storage element of the power system. This demanding role can be met and exists in an integrated design of a flywheel system baselined using composite rotor material technology to yield high energy density, magnetic suspension technology to yield low losses at high rotational speeds with corresponding ten year life, and brushless, ironless armature, permanent magnet motor/generator technology to yield high efficiency energy conversion.


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    Titel :

    High speed reaction wheels for satellite attitude control and energy storage


    Weitere Titelangaben:

    Hochgeschwindigkeit-Reaktionsschwungraeder fuer die Fluglagenregelung und Energiespeicherung von Satelliten


    Beteiligte:
    Studer, P. (Autor:in) / Rodriguez, E. (Autor:in)


    Erscheinungsdatum :

    1985


    Format / Umfang :

    4 Seiten, 3 Bilder, 5 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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