Powered-lift acoustic test of the Quiet Clean Short Haul Experimental Engine (QCSEE) under the wing (UTW) engine are reported. Propulsion systems for two powered-lift concepts were designed, fabricated, and tested. In addition to low noise features, the designs included composite structures, gear-driven fans, digital control, and a variable pitch fan (UTW). The UTW engine was tested in a static ground test facility with wing and flap segments to simulate installation on a short haul transport aircraft of the future. Powered-lift acoustic performance of the UTW engine is compared with that of the previously tested and reported QCSEE over-the-wing (OTW) engine. Both engines were slightly above the noise goal but were significantly below current FAA and modern wide-body jet transport levels. The UTW system in the powered-lift mode was penalized by reflected engine noise from the wing and flap system, while the OTW system was benefitted by a wing noise shielding effect.


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    Titel :

    Qcsee Utw Engine Powered-Lift Acoustic Performance


    Beteiligte:
    I. J. Loeffler (Autor:in) / N. E. Samanich (Autor:in) / H. E. Bloomer (Autor:in)

    Erscheinungsdatum :

    1980


    Format / Umfang :

    35 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    QCSEE UTW engine powered-lift acoustic performance

    Loeffler, I. J. / Samanich, N. E. / Bloomer, H. E. | NTRS | 1980


    QCSEE UTW engine powered-lift acoustic performance

    LOEFFLER, I. / SAMANICH, N. / BLOOMER, H. | AIAA | 1980


    QCSEE over-the-Wing Engine Acoustic Data

    H. E. Bloomer / I. J. Loeffler | NTIS | 1982


    QCSEE Over-the-Wing Engine Acoustic Data

    Bloomer, H. E. / Loeffler, I. J. | NTRS | 1982


    Acoustic design of the QCSEE propulsion systems

    Loeffler, I. J. / Smith, E. B. / Sowers, H. D. | NTRS | 1976