Two-dimensional wedge nozzle performance characteristics were investigated in a series of wind-tunnel tests. An isolated single-engine/nozzle model was used to study the effects of internal expansion area ratio, aftbody cowl boattail angle, and wedge length. An integrated twin-engine/nozzle model, tested with and without empenage surfaces, included cruise, acceleration, thrust vectoring and thrust reversing nozzle operating modes. Results indicate that the thrust-minus-aftbody drag performance of the twin two-dimensional nozzle integration is significantly higher, for speeds greater than Mach 0.8, than the performance achieved with twin axisymmetric nozzle installations. Significant jet-induced lift was obtained on an aft-mounted lifting surface using a cambered wedge center body to vector thrust. The thrust reversing capabilities of reverser panels installed on the two-dimensional wedge center body were very effective for static or in-flight operation.


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    Titel :

    Investigation of two-dimensional wedge exhaust nozzles for advanced aircraft


    Beteiligte:
    Maiden, D. L. (Autor:in) / Petit, J. E. (Autor:in)

    Kongress:

    American Institute of Aeronautics and Astronautics and Society of Automotive Engineers, Propulsion Conference ; 1975 ; Anaheim, CA


    Erscheinungsdatum :

    01.09.1975


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :




    Internal performance of two-dimensional wedge exhaust nozzles

    Beale, William T / Povolny, John H | NTRS | 1957



    Exhaust nozzles for supersonic aircraft

    Pearson, H. | Engineering Index Backfile | 1958