A high tip speed turboprop is being considered as a future energy conservative airplane. The high tip speed of the propeller, combined with the speed of the airplane, results in supersonic relative flow on the propeller tips. These supersonic blade sections could generate noise that is a cabin environment problem. The feasibility of using wing shielding to lessen the impact of this supersonic propeller noise was investigated. An analytical model is chosen which considers that shock waves are associated with the propeller tip flow and indicates how they would be prevented from impinging on the airplane fuselage. An example calculation is performed where a swept wing is used to shield the fuselage from significant portions of the propeller shock waves.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Feasibility of Wing Shielding of the Airplane Interior from the Shock Noise Generated by Supersonic Tip Speed Propellers


    Beteiligte:
    J. H. Dittmar (Autor:in)

    Erscheinungsdatum :

    1978


    Format / Umfang :

    25 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch





    Tandem airplane propellers

    Lesley, E.P. | Engineering Index Backfile | 1939


    Oblique-Flying-Wing Supersonic Transport Airplane

    Van Der Velden, Alexander J. M. | NTRS | 1992


    Making micarta airplane propellers

    Knight, R.L. | Engineering Index Backfile | 1929


    Making micarta airplane propellers

    Knight, R.L. | Engineering Index Backfile | 1929