High bypass geared turbofan engines with nacelles forming the propulsion system for short-haul passenger aircraft were tested for use in externally blown flap-type aircraft. System noise levels for a four-engine, UTW-powered aircraft operating in the powered lift mode were calculated to be 97.2 and 95.7 EPNdB at takeoff and approach, respectively, on a 152.4 m (500 ft) sideline compared to a goal of 95.0 EPNdB.


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    Titel :

    Quiet Clean Short-Haul Experimental Engine (Qcsee) under-the-Wing (Utw) Composite Nacelle Test Report. Volume 2: Acoustic Performance


    Beteiligte:
    D. L. Stimpert (Autor:in)

    Erscheinungsdatum :

    1979


    Format / Umfang :

    124 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch