Computed results from UMARC and DART analyses are compared with the blade bending moments and vibratory hub loads data obtained from a full-scale wind tunnel test of the McDonnell Douglas five-bladed advanced bearing-less rotor. The 5 per-rev vibratory hub loads data are corrected using results from a dynamic calibration of the rotor balance. The comparison between UMARC computed blade bending moments at different flight conditions are poor to fair, while DART results are fair to good. Using the free wake module, UMARC adequately computes the 5P vibratory hub loads for this rotor, capturing both magnitude and variations with forward speed. DART employs a uniform inflow wake model and does not adequately compute the 5P vibratory hub loads for this rotor.


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    Title :

    Computation of loads on the McDonnell Douglas advanced bearingless rotor


    Additional title:

    Die berechneten Belastungen des lagerfreien Hubschrauberrotors von McDonnell Douglas


    Contributors:
    Naguyen, K. (author) / Lauzon, D. (author) / Anand, V. (author)


    Publication date :

    1994


    Size :

    10 Seiten, 14 Bilder, 1 Tabelle, 17 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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    McNulty, M. / Jacklin, S. / Lau, B. et al. | British Library Conference Proceedings | 1993