Experimental techniques are discussed that permit evaluation of V/STOL aircraft aerodynamics in and near hovering flight. The unique apparatus employed utilizes a moving model and allows precise control of model velocities from hover through the transition flight regime. Quasi-steady testing results are presented and discussed regarding their value in test productivity, examination of hysteresis phenomena, and elimination of recirculation effects due to the testing enclosure. The suitability of Froude scale modeling is examined and the capability complete flight dynamics simulation is reviewed. Particular attention is devoted to the capability for testing powered models both in and out of ground effect as well as for simulating the dynamics of ground effect. A current Navy/NASA sponsored test program utilizing a Grumman Aerospace Corporation twin-turbofan V/STOL aircraft model is discussed. (DePo)


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    Title :

    Low speed testing techniques for V/STOL aircraft in the Princeton dynamic model track


    Additional title:

    Anordnung fuer die Pruefung von Kurzstart-Senkrechtstartern bei Schwebeflug in der dynamischen Modellpruefanlage von Princeton


    Contributors:

    Published in:

    Publication date :

    1979


    Size :

    16 Seiten, 34 Bilder, 12 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English