A series of flyover noise measurements have been accomplished utilizing a large jet transport aircraft with engine power reduced to flight idle. It was determined that the aerodynamic (nonengine) noise levels did occur in the general range that had been predicted by using small aircraft (up to 17,690 kg gross weight) prediction techniques. The test procedures used are presented along with discussions of the effects of aerodynamic configuration on the radiated noise, identification of noise sources, and predicted aerodynamic noise as compared with measuremets. (Author)


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    Title :

    Non-Engine Aerodynamic Noise Investigation of a Large Aircraft


    Contributors:

    Publication date :

    1974


    Size :

    56 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English