In order to provide information for flutter and dynamic stress calculations on an aircraft a knowledge of the normal modes of vibration is required. In the following paper a matrix method, due to Dr Traill-Nash, is extended and used to obtain a general expression for the complete aircraft normal modes, and is applicable to most aircraft configurations. The method is considered to be eminently suitable for use with modern digital electronic computational equipment. Methods arc discussed vthcrcby the degrees of freedom may be economized without significant loss of accuracy. By restriction of the degrees of freedom allowed, important subsidiary cases arc drawn from the general expressions, allowing standard matrix solutions suitable for normal oflicc routine.


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    Title :

    The Normal Modes of Vibration of an Aircraft


    Subtitle :

    A Comprehensive Technique for the Determination of Aircraft Normal Modes Using a Matrix Method


    Contributors:
    Shevloff, N.P. (author) / Reid, T.J. (author)

    Published in:

    Publication date :

    1953-12-01


    Size :

    7 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



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