The additional thrust required to give an aircraft VSTOL capability may be obtained by diverting the exhaust of the cruise engine through a thrust augmenting ejector. The hypermixing nozzle has been developed to increase the rate of jet mixing and thereby improve the performance of the ejector. Since this is achieved at some cost in primary thrust efficiency, comparison tests were performed with a single shroud and three interchangeable nozzles. A one-dimensional analysis is used to compute ideal levels to augmentation and assess the relative importance of the injection losses. It is seen that hypermixing significantly improves ejector performance by making efficient diffusion of the mixed flow possible. (Author)


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    Title :

    Evaluation of Hypermixing for Thrust Augmenting Ejectors


    Contributors:

    Publication date :

    1974


    Size :

    10 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English





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