The Heat Pipe Experiment Package (HEPP) is designed to provide a flight evaluation system for low temperature heat pipes. The HEPP will be flown aboard the long Duration Exposure Facility (LDEF) which will be launched and retrieved as part of the Space Shuttle program. The experiment contains two heat pipes; an axially grooved fixed conductance heat pipe and a liquid blockage thermal diode. A phase change material (PCM) canister is also integrated with a radiant cooler system. Additional hardware consists of supporting electrical equipment, including electronics for signal conditioning and command functions, a data recorder, and a hermetically sealed battery which powers the experiment. A thermal model was developed to simulate the behavior of the HEPP and a ground test program was conducted to verify the equipment's predicted performance. This paper discusses the HEPP design, the thermal model, the ground test performance and the planned flight test program. (Se)


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    Title :

    HEPP - a low temperature heat pipe experiment package developed for flight on-board the long duration exposure facility (LDEF)


    Additional title:

    HEPP - Ein Tieftemperatur-Experimentierpaket mit Waermeleitrohren an Bord einer Raumfaehre fuer lange Flugzeit


    Contributors:
    Suelan, H.J. (author) / Brennan, P.J. (author) / McIntosh, R. (author)


    Publication date :

    1978


    Size :

    8 Seiten, 6 Bilder, 5 Tabellen, 7 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English