A fiberoptic deflectometer is under development to diagnose bearing degradation of the turbine end bearings of the Space Shuttle Main Engine (SSME) high pressure oxidizer turbopump (HPOTP). The deflectometer, which measures bearing outer race deformations, provides better diagnostic sensitivity than traditional diagnostic sensors (such as accelerometers). The sensor construction, materials, and method of bringing the optical signal out of the HPOTP are described. Accuracy and repeatability results obtained in a static liquid nitrogen test rig are presented. Finally a potentially viable solution to the difficult problem of calibration in cryogen is discussed.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    A Prototype Fiberoptic Deflectometer for SSME Turbopump Bearing Health Monitoring


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    Aerospace Atlantic Conference & Exposition ; 1993



    Publication date :

    1993-04-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Structural tailoring of SSME turbopump blades (SSME/STAEBL)

    RUBINSTEIN, R. / CHAMIS, C. | AIAA | 1986


    SSME - Alternate turbopump casting

    GIBSON, H. / LONGENECKER, K. | AIAA | 1990



    SSME alternate turbopump (pump section) axial load analysis

    CREASE, G. / ROSELLO, JR., A. / FETFATSIDIS, A. | AIAA | 1989