Spacecraft design has historically allocated specific volume and mass "not to exceed" requirements upon individual systems and their accompanying hardware (e.g., life support, avionics) early in their conceptual design in an effort to align the spacecraft with propulsion capabilities. If the spacecraft is too heavy or too wide for the launch stack - it does not get off the ground. This approach has predictably ended with the crew being allocated whatever open, pressurized volume remains. With the recent inauguration of a new human-rated spacecraft - NASA human factors personnel have found themselves in the unique position to redefine the human as a system from the very foundation of design. They seek to develop and monitor a "not to fall below" requirement for crew net habitable volume (NHV) - balanced against the "not to exceed" system volume requirements, with the spacecraft fitting the crew versus the crew having to fit inside the spacecraft.


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    Title :

    The Human as a System - Monitoring Spacecraft Net Habitable Volume throughout the Design Lifecycle


    Contributors:
    Szabo, Richard (author) / Kallay, Anna (author) / Twyford, Evan (author) / Maida, Jim (author)

    Conference:

    Human Factors and Ergonomics Society 51st Annual Meeting ; 2007 ; Baltimore, MD, United States


    Publication date :

    2007-10-05


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




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