An analysis has been performed of the flow oscillations observed in the 'empty' nozzles of the space shuttle solid rocket motor (SRM's) after they have been jettisoned at burnout. The unsteady flow phenomenon is similar in many respects to the flow oscillations observed on bodies with flow separation spikes. Hence, a previously developed analytic method for prediction of the spiked body oscillation frequency has been extended to apply to forward facing cavities. The predicted frequencies are in good agreement with experimental results. Furthermore, a simple time history analysis produces time average loads on the forward facing SRM-nozzles that agree well with the observed discontinuous load changes caused by the flow oscillation. The analytic methods have direct or indirect application to analysis of inlet dynamics, supersonic control buzz, and nosetip aerodynamics of ablating re-entry vehicles. (Kursetz)


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Unsteady flow phenomena in forward facing cavities


    Additional title:

    Merkmale der ungleichmaessigen Stroemung in nach vorn offenen Hohlraeumen


    Contributors:

    Published in:

    Publication date :

    1978


    Size :

    14 Seiten, 17 Bilder, 93 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English







    Unsteady Flow Around Cylinders with Cavities

    Iaccarino, G. / Durbin, P. / Talley, S. et al. | British Library Conference Proceedings | 2004