This is the second part of a program concerning noise certification for V/STOL and helicopter aircraft. Aspects considered were: an engineering calculation procedure which validly and reliably reflects annoyance to helicopter operations; estimates of noise exposure levels which could be compatible with human activities in areas surrounding heliports; noise exposure modeling for helicopter noise; certification measurement approaches for helicopter noise certification. The basics of the program involved human response evaluations of conventional takeoff and landing (CTOL) aircraft noise, simulations of helicopter noise emphasizing 'slap' or pulsating noise effects, and recordings of a wide variety of helicopter operations.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Noise Certification Considerations for Helicopters Based on Laboratory Investigations


    Publication date :

    1976


    Size :

    108 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    FAA certification of turbine transport helicopters

    Sabo, J.A. / Dumont, T.E. | Engineering Index Backfile | 1962


    Some theoretical considerations on helicopters

    Drees, J.M. | Engineering Index Backfile | 1949




    SOURCES OF HELICOPTERS NOISE

    Mnitowski, S. | British Library Online Contents | 2002