Flight experiment was designed primarily to determine the extent to which steady-state maneuvers influence characteristic vibration patterns measured at the input pinion and output annulus gear locations of the main transmission. If results were to indicate that maneuvers systematically influence vibration patterns, more extensive studies would be planned to explore the response surface. It was also designed to collect baseline data for comparison with experimental data to be recorded at a later date from test stands at Glenn Research Center. Finally, because this was the first vibration flight study on the Cobra aircraft, considerable energy was invested in developing an in-flight recording apparatus, as well as exploring acceleration mounting methods, and generally learning about the overall vibratory characteristics of the aircraft itself.


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    Title :

    Experimental Analysis of Steady-State Maneuvering Effects on Transmission Vibration Patterns Recorded in an AH-1 Cobra Helicopter


    Contributors:
    E. M. Huff (author) / M. Dzwonczyk (author)

    Publication date :

    2000


    Size :

    5 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English





    Experimental Analysis of Steady-State Maneuvering Effects on Transmission Vibration Patterns Recorded in an AH-1 Cobra Helicopter

    Huff, E. M. / Barszcz, E. / Tumer, I. Y. et al. | British Library Conference Proceedings | 2000



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    Measurements and Characterization of Helicopter Noise in Steady-State and Maneuvering Flight

    Schmitz, F. H. / Greenwood, E. / Sickenberger, R. et al. | British Library Conference Proceedings | 2007