This paper reports studies of jet-induced upwash fountains for twin-nozzle, short take-off and vertical landing (STOVL) aircraft. Experimental and 3-D computational fluid dynamics studies were carried out using twin circular jets at nozzle pressure ratios (NPR) between 1.05 and 3, impingement heights between 2.5 and 8.5 nozzle diameters and a nozzle separation of 7 diameters. This paper describes an extension to our previous work on jet-induced fountain unsteadiness, with the development of pressure-instrumented ground and suck-down plates and a vertically-moving ground landing simulator. The aims of the studies were to model and measure the average pressure and time-varying fluctuations present around the upwash fountain and to correlate this information with flow visualisation data and hence to understand better the flow mechanisms involved in upwash fountain flapping, with application to modern STOVL aircraft.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Experimental and Computational Studies of Unsteady Flow Features of Upwash Fountains from Twin Impinging Jets


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Saddington, A.J. (Autor:in) / Knowles, K. (Autor:in) / Bowdrey, R.J. (Autor:in)

    Kongress:

    Aerospace Technology Conference and Exposition ; 2005



    Erscheinungsdatum :

    2005-10-03




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Stagnation Line and Upwash Formation of Two Impinging Jets

    M. J. Siclari / W. G. Hill R. C. Jenkins | AIAA | 1981


    Flow Characteristics of Twin Impinging Jets

    Barata, J. / Sousa, N. / Silva, A. et al. | British Library Conference Proceedings | 2009


    Flow Characteristics of Twin Impinging Jets

    Barata, Jorge / Sousa, Nuno / Silva, André et al. | AIAA | 2009


    Supersonic Twin Impinging Jets

    Elavarasan, R. / Venkatakrishnan, L. / Krothapalli, A. et al. | British Library Conference Proceedings | 2000


    Supersonic twin impinging jets

    Elavarasan, R. / Venkatakrishnan, L. / Krothapalli, A. et al. | AIAA | 2000