The paper presents wind tunnel experimental flutter results, at transonic relative flows, for a 0.62-m diameter composite propfan model. A blade row that fluttered was tested alone, and with a stable aft counter-rotating blade row. The major objectives of the experiment were to study the effect of the second blade row on the row in flutter, and to investigate the flutter. Results show that the second row had a stabilizing effect. Two distinct flutter modes were found. For both flutter modes: flutter boundary, frequency, nodal diameter, and blade displacement data are given. The blade displacement data, obtained with an optical method, gives an indication of the flutter mode shape at a span near the blade tip.


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    Title :

    Experimental investigation of counter-rotating propfan flutter at cruise conditions


    Additional title:

    Die experimentelle Untersuchung von gegenläufigem Flattern an Propellern bei Reisegeschwindigkeit


    Contributors:
    Mehmed, O. (author) / Kurkov, A.P. (author)


    Publication date :

    1993


    Size :

    9 Seiten, 9 Bilder, 2 Tabellen, 14 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English