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    Aerothermoelastic analysis of a NASP demonstrator model

    Aerothermoelastic analysis of a NASP demonstrator model


    The proposed National Aerospace Plane (NASP) is designed to travel at speeds up to Mach 25. Because aerodynamic heating during high-speed flight through the atmosphere could destiffen a structure, significant couplings between the elastic and rigid body modes could result in lower flutter speeds and more pronounced aeroelastic response characteristics. These speeds will also generate thermal loads on the structure. The purpose of this research is to develop methodologies applicable to the NASP and to apply them to a representative model to determine its aerothermoelastic characteristics when subjected to these thermal loads. This paper describes an aerothermoelastic analysis of the generic hypersonic vehicle configuration. The steps involved in this analysis were: generating vehicle surface temperatures at the appropriate flight conditions; applying these temperatures to the vehicle's structure to predict changes in the stiffness resulting from material property degradation; predicting the vibration characteristics of the heated structure at the various temperature conditions; performing aerodynamic analyses; and conducting flutter analysis of the heated vehicle. Results of these analyses and conclusions representative of a NASP vehicle are provided in this paper.

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    Titel :

    Aerothermoelastic analysis of a NASP demonstrator model

    Beteiligte:
    Heeg, Jennifer (Autor:in) / Zeiler, Thomas A. (Autor:in) / Pototzky, Anthony S. (Autor:in) / Spain, Charles V. (Autor:in) / Engelund, Walter C. (Autor:in)
    Erscheinungsdatum :

    1993-10-01

    Medientyp :

    Report

    Format :

    Keine Angabe

    Sprache :

    Englisch

    Schlagwörter :

    Aircraft Design, Testing And Performance

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