New models for thrust augmenting ejector performance prediction and feeder duct dynamic analysis are presented and applied to a proposed Short Take Off and Vertical Landing (STOVL) aircraft configuration. Central to the analysis is the nontraditional treatment of the time-dependent volume integrals in the otherwise conventional control-volume approach. In the case of the thrust augmenting ejector, the analysis required a new relationship for transfer of kinetic energy from the primary flow to the secondary flow. Extraction of the required empirical corrections from current steady-state experimental data is discussed; a possible approach for modeling insight through Computational Fluid Dynamics (CFD) is presented.


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    Title :

    Modeling Technique for STOVL Ejector and Volume Dynamics


    Contributors:

    Publication date :

    1990


    Size :

    13 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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    A modeling technique for STOVL ejector and volume dynamics

    Drummond, C. K. / Barankiewicz, W. S. | NTRS | 1990


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