This paper describes the on-going development of a comprehensive integrated guidance and control architecture featuring an on-line aerodynamic identification scheme that produces a global estimate of a damaged vehicle's aerodynamic characteristics. This estimate is used to derive updated constraints reflecting the vehicle's degraded maneuverability that are incorporated into computationally efficient algorithms for on-line trajectory reshaping/retargeting. This paper presents recent progress on a Multiple-Model Adaptive Estimation approach to the global aerodynamic estimation process. The scheme utilizes diagnostic information assumed to be provided by a vehicle health monitor to generate a bank of aerodynamic models in which each model is created by an aerodynamic prediction code for a vehicle configuration reflecting a particular type of damage. The individual models are blended through weights that are adapted on-line using measured data.


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    Title :

    On-Line Aerodynamic Identification for Space Access Vehicles (Preprint)


    Contributors:
    D. A. Allwine (author) / J. E. Fisher (author) / J. A. Strahler (author) / M. Wu (author) / I. Rose (author)

    Publication date :

    2006


    Size :

    16 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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