SSME HPFTP hot-fire dynamic data evaluation and rotordynamic analysis both confirm that two of the most significant turbopump attributes in determining susceptibility to subsynchronous vibration are impeller interstage seal configuration and rotor sideload resulting from turbine turnaround duct configuration and hot gas manifold. Recent hot-fire testing has provided promising indications that the incorporation of roughned 'damping' seals at the impeller interstages may further increase the stability margin of this machine. A summary of the analysis which led to the conclusion that roughened seals would enhance the stability margin is presented herein, along with a correlation of the analysis with recent test data.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Suppression of subsynchronous vibration in the SSME HPFTP


    Additional title:

    Unterdrückung von untersynchronen Schwingungen am Haupttriebwerk des Space Shuttles


    Contributors:
    Becht, D.G. (author) / Hawkins, L.A. (author) / Scharrer, J.K. (author) / Murphy, B.T. (author)


    Publication date :

    1991


    Size :

    6 Seiten, 6 Bilder, 3 Tabellen, 10 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English