The STS-121/ULF1.1 mission was the maiden flight of the Programmable Thermostat Module (PTM) system used to control the 28 V shell heaters on the Multi-Purpose Logistics Module (MPLM). These PTMs, in conjunction with a Data Recorder Module (DRM), provide continuous closed loop temperature control and data recording of MPLM on-orbit heater operations. This paper will discuss the hardware design, development, test and verification (DDT&V) activities performed at the Marshall Space Flight Center (MSFC) as well as the operational implementation and mission performance.


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    Title :

    Programmable Thermostat Module Upgrade for the Multi-Purpose Logistics Module


    Contributors:
    D. Clark (author) / S. Glasgow (author) / S. Reagan (author) / K. Presson (author) / D. Howard (author)

    Publication date :

    2007


    Size :

    11 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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