The absorbed power concept offers certain advantages over pure acceleration for helicopter ride quality evaluation. First, it takes into account multi-frequency, multi-axial vibration across a broad frequency range. Second, it provides proper weighting functions for all frequencies and axes according to body response. Third, it is applicable to random as well as periodic accelerations. A larger data base and further experimentation is required for full validation of absorbed power as a means for quantifying helicopter vibration ride quality. Further in-flight data will be collected to expand the vibration/noise environment data base, repeating measurements on the aircraft mentioned here, and add further aircraft. Already underway is a program to take measurements on US Navy air craft types. Data have been recorded on a Sikorsky RH-53D and a Kaman SH-2F. The subjective response experiments will be continued for correlation and validation of the absorbed power and NASA Ride Comfort Model.


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    Title :

    Quantification of Helicopter Vibration Ride Quality Using Absorbed Power Measurements


    Contributors:

    Publication date :

    1982


    Size :

    18 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English






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