The objective of the refan program is to demonstrate the technical feasibility of substantially reducing the noise levels of existing JT8D powered aircraft. The program consists of the design, manufacturing and testing of the refan engines and modified nacelles and airplanes. Experimental testing has been completed for the refan engine both at sea level and at altitude conditions. Ground testing for the B727 side- and center-engine installations and flight testing of the DC-9 with refan engines and acoustic nacelles have been performed. Analyses of the test results are in progress. Preliminary results presented in this paper show that substantial noise reductions were achieved.


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    Titel :

    NASA refan program status


    Beteiligte:
    Abdalla, K. L. (Autor:in) / Yuska, J. A. (Autor:in)

    Kongress:

    Society of Automotive Engineers, Air Transportation Meeting ; 1975 ; Hartford, CT


    Erscheinungsdatum :

    01.05.1975


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch




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    K. L. Abdalla / J. A. Yuska | NTIS | 1975


    NASA refan program status

    Abdalla, K. L. / Yuska, J. A. | NTRS | 1975



    The 727/JT8D refan side nacelle airloads

    Bailey, R. W. / Vadset, H. J. | NTRS | 1974


    The 727/Jt8d Refan Side Nacelle Airloads

    R. W. Bailey / H. J. Vadset | NTIS | 1974