The paper discusses the method used in the Space Shuttle program to optimize landing gear loads and requirements to support increased landing weights. The mathematical models of the Orbiter gear system, aerodynamics, and the flight control system are reviewed. The loads criteria developed include a root sum squared (RSS) method to combine the different loads effects of the pilot's procedures. This effort required a new landing loads simulation that integrated the Orbiter landing gear with a detailed flight control system (FCS) model. This integrated model has been verified by correlation of predictions with flight measurements. The revised Orbiter landing criteria and requirements have been used to develop flight rules that enable Mission Planners and Controllers to determine minimum acceptable temperatures for on-orbit operations. In addition, the Linear Quadratic Synthesis (LQS) procedure is reviewed as a means of developing a simplified FCS to support other loads optimization efforts.


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    Title :

    Space Shuttle Orbiter landing loads optimization


    Additional title:

    Optimierung der Landungstriebwerksbelastungen des Space Shuttle Orbiter


    Contributors:
    Purtle, L.V. (author) / Fann, C.P. (author) / Eich, P.G. (author)


    Publication date :

    1995


    Size :

    15 Seiten, 17 Bilder, 2 Tabellen, 9 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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