An investigation of vertical takeoff and landing aircraft lift losses in hover was conducted to evaluate a method for a simplified test technique. Three flat plate models were tested to determine their usefulness in predicting hover characteristics by comparing results between plate and three-dimensional models. Data obtained for the plate models were correlated to three-dimensional results by the application of a geometrical equivalent height correction factor. The correlation of plate and tunnel models indicated that lift losses in ground effect were essentially independent of the efflux characteristics for the engine simulators.


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    Title :

    Analysis of spread multi-jet VTOL aircraft in hover


    Contributors:

    Publication date :

    1974-12-01


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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