Comfort inside a helicopter cabin has become an important goal in order to increase the civil market for this type of aircraft. A big effort to reach the comfort of a propeller aircraft has been done during the last decade. Into a specific Friendcopter work-package dedicated to the cabin noise reduction, several technologies, both active and passive, have been developed and tested in order to be implemented when airworthiness requirements are satisfied in a flying helicopter to demonstrate their effectiveness. Mainly the following items have been deeply faced: improvement of the applied soundproofing, reduction of vibrations and radiated noise of the gearbox source, control of vibration transferred from the gearbox to the frame through connection element by active control.


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    Title :

    Helicopter cabin noise reduction: From available technologies to implementation


    Contributors:


    Publication date :

    2008


    Size :

    13 Seiten, 20 Bilder, 1 Tabelle, 2 Quellen



    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English




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