Application of the finite length correction factor for the analysis of the finite length squeeze film bearings has been made, and a method has been found to be highly efficient. The modal transient program to include linear rotor acceleration, has been developed and various analysis of rotor systems has been done. A rapid method to calculate the load capacity and dynamics characteristics of a journal or squeeze film bearing has been developed using a finite element approach coupled with an end leakage correction factor. A procedure has been developed to balance a multi-stage turbine without having to first apply trial weights to generate a set of influence coefficients. This procedure represents a major advance in the technology of flexible rotor balancing. It is incorporated into a mini computer system which can collect and analyze the rotor data. (DePo)


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    Title :

    Nonlinear analysis of squeeze film dampers applied to gas turbine helicopter engines


    Additional title:

    Nichtlineare Analyse der Quetschfilmdaempfer und ihre Anwendung fuer Hubschrauber-Gasturbinen


    Contributors:
    Gunter, E.J. (author) / Barrett, L.E. (author) / Flaire, P.E. (author)

    Published in:

    Publication date :

    1980


    Size :

    13 Seiten


    Type of media :

    Report


    Type of material :

    Print


    Language :

    English




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