The concept of life extending control is defined. A brief discussion of current fatigue life prediction methods is given and the need for an alternative life prediction model based on a continuous functional relationship is established. Two approaches to life extending control are considered: (1) the implicit approach which uses cyclic fatigue life prediction as a basis for control design; and (2) the continuous life prediction approach which requires a continuous damage law. Progress on an initial formulation of a continuous (in time) fatigue model is presented. Finally, nonlinear programming is used to develop initial results for life extension for a simplified rocket engine (model).


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    Title :

    Life Extending Control for Rocket Engines


    Contributors:
    C. F. Lorenzo (author) / J. R. Saus (author) / A. Ray (author) / M. Carpino (author) / M. Wu (author)

    Publication date :

    1992


    Size :

    19 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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