The relationship between direct operating cost and departure noise annoyance was developed for commercial tilt rotor aircraft. This was accomplished by generating a series of tilt rotor aircraft designs to meet various noise goals at minimum DOC. These vehicles were spaced across the spectrum of possible noise levels from completely unconstrained to the quietest vehicle that could be designed within the study ground rules. A group of optimization parameters were varied to find the minimum DOC while other inputs were held constant and some external constraints were met. This basic variation was then extended to different aircraft sizes and technology time frames. It was concluded that reducing noise annoyance by designing for lower rotor tip speeds is a very promising avenue for future research and development. It appears that the cost of halving the annoyance compared to an unconstrained design is insignificant and the cost of halving the annoyance again is small.


    Access

    Download


    Export, share and cite



    Title :

    The cost of noise reduction in commercial tilt rotor aircraft


    Contributors:

    Publication date :

    1974


    Size :

    [153]in variousgings ([iv], 50, 1-1 to 1-91, 2-1 to 2-14) pages


    Remarks:

    August 1974
    Includes bibliographical references (p. 48-50)


    Type of media :

    Report


    Type of material :

    Electronic Resource


    Language :

    Unknown






    Tilt rotor aircraft noise reduction

    MISIOROWSKI MATTHEW P / SCHMAUS JOSEPH H | European Patent Office | 2023

    Free access

    Tilt Rotor Aircraft Noise Reduction

    MISIOROWSKI MATTHEW P / SCHMAUS JOSEPH H | European Patent Office | 2023

    Free access