A contoured boattail nozzle typical of those used on a twin-engine fighter was tested on an underwing nacelle mounted on an F-106B aircraft. The gas generator was a J85-GE-13 turbojet engine. The effects of Reynolds number, Mach number, and angle of attack on boattail drag and boattail pressure profiles were investigated. Increasing Reynolds number caused a slight reduction in boattail drag at both Mach 0.7 and 0.9. The nozzle had relatively low boattail drag even though the flow was separated over a large portion of the boattail. (Author)


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    Title :

    Flight Reynolds Number Effects on a Contoured Boattail Nozzle at Subsonic Speeds


    Contributors:

    Publication date :

    1974


    Size :

    24 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English