The primary objective of the study was to obtain the field data necessary to examine the feasibility of a simplified helicopter-noise-certification procedure (screening test). Acoustic data were measured by and stored on a hand-held sound-level meter (on-line processing) and recorded on digital tape for later off-line processing. A comparison of the measured on-line acoustic data with the acoustic data processed off-line provided the foundation necessary to evaluate the feasibility of the proposed screening test. In addition to acoustic measurements, meteorological data and helicopter tracking and performance data were also obtained.


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    Titel :

    Noise Measurement Flight Test of Five Light Helicopters


    Beteiligte:
    E. J. Rickley (Autor:in) / K. E. Jones (Autor:in) / A. S. Keller (Autor:in) / G. G. Fleming (Autor:in)

    Erscheinungsdatum :

    1993


    Format / Umfang :

    382 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Noise Measurement Flight Test of Five Light Helicopters

    E. J. Rickley / K. E. Jones / A. S. Keller et al. | NTIS | 1993



    Flight testing of helicopters

    Stewart, W. | Engineering Index Backfile | 1948


    Flight simulation for helicopters

    Engineering Index Backfile | 1954


    Flight simulation for helicopters

    Engineering Index Backfile | 1955