A six-degree-of-freedom simulation analysis was performed for the space shuttle orbiter entry from Mach 10 to Mach 2.5 with realistic off-nominal conditions using the flight control system referred to as the November 1976 Integrated Digital Autopilot. The off-nominal conditions included: (1) aerodynamic uncertainties in extrapolating from wind tunnel of flight characteristics, (2) error in deriving angle of attack from onboard instrumentation, (3) failure of two of the four reaction control-system thrusters on each side (design specification), and (4) lateral center-of-gravity offset. Many combinations of these off-nominal conditions resulted in a loss of the orbiter. Control-system modifications were identified to prevent this possibility.


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    Title :

    Analysis of Space Shuttle Orbiter Entry Dynamics from Mach 10 to Mach 2.5 with the November 1976 Flight Control System


    Contributors:
    R. W. Powell (author) / H. W. Stone (author)

    Publication date :

    1980


    Size :

    163 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English






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