The CFM56 is a double-body, dual flow turbofan engine (operating in separated flow and multiphase flow) with 10 tons of thrust. Test facilities for examination of the aerodynamic internal and engine noise characteristics of the turbofan are described. An installation for the determination of the efficacy of acoustic attenuation treatments on the engine is included. Maximum engine noise is plotted as a function of thrust, and noise spectra on landing approach, takeoff, and intermediate flight are presented. (Author)


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    Title :

    The CFM56 Turbofan Engine. Progress in the Reduction of Engine Noise


    Contributors:
    J. P. Bernard (author) / P. Raffy (author)

    Publication date :

    1976


    Size :

    37 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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