A release apparatus includes a coiled restraining wire with each end attached to a corresponding fuse wire. The fuse wires are supplied with respective actuation electric currents by respective independent current sources. Flow of actuation current through a fuse wire causes that fuse wire to break; breakage of either one or both fuse wires allows the restraining wire to partially uncoil and allow the release apparatus to transition from a retained condition to a released condition, by allowing disengagement of retention members from a release member that can then move out of the release apparatus. The release apparatus can be employed to attach a deployable component to a satellite or spacecraft, and can be readily repaired, refurbished or reset for repetitive ground testing.


    Access

    Download


    Export, share and cite



    Title :

    Redundant fuse wires in a hold-down release apparatus


    Contributors:

    Publication date :

    2018-08-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H01H Elektrische Schalter , ELECTRIC SWITCHES / B64G Raumfahrt , COSMONAUTICS / F16B DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES , Vorrichtungen zum Befestigen oder Sichern von Konstruktionselementen oder Maschinenteilen, z.B. Nägel, Bolzen, Schrauben, Sprengringe, Klemmen, Klammern oder Keile / H01B CABLES , Kabel



    Redundant fuse wire release device

    BAGHDASARIAN VAROUJ | European Patent Office | 2015

    Free access

    Hold Down/Release Cylinder Acceptance Testing

    Nakamura, M. / Institute of Environmental Sciences / Aerospace Corporation | British Library Conference Proceedings | 1993


    Hold down release mechanism with integral sensing

    NOVOTNEY DAVID / KACZYNSKI GEOFF / BOUCHER CRAIG | European Patent Office | 2018

    Free access

    HOLD DOWN RELEASE MECHANISM WITH INTEGRAL SENSING

    NOVOTNEY DAVID / KACZYNSKI GEOFF / BOUCHER CRAIG | European Patent Office | 2018

    Free access

    HOLD DOWN RELEASE MECHANISM WITH INTEGRAL SENSING

    NOVOTNEY DAVID / KACZYNSKI GEOFF / BOUCHER CRAIG | European Patent Office | 2018

    Free access