It is believed that a fuel saving of 14 to 40 percent may be realized by the use of an advanced high-speed turboprop. This turboprop must be capable of high efficiency at Mach 0.8 cruise above 9.144 km altitude if it is to compete with turbofan powered commercial aircraft. Several advanced aerodynamic concepts were investigated in recent wind tunnel tests under NASA sponsorship on two propeller models. These concepts included aerodynamically integrated propeller/nacelles, area-ruling, blade sweep, reduced blade thickness and power (disk) loadings several times higher than conventional designs. The aerodynamic design methodology for these models is discussed in this paper. In addition, some of the preliminary test results are presented which indicate that propeller net efficiencies near 80 percent were obtained for high disk loading propellers operating at Mach 0.8.


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    Titel :

    Design and performance of energy efficient propellers for Mach 0.8 cruise


    Beteiligte:
    Mikkelson, D. C. (Autor:in) / Blaha, B. J. (Autor:in) / Mitchell, G. A. (Autor:in) / Wikete, J. E. (Autor:in)

    Kongress:

    Business Aircraft Meeting ; 1977 ; Wichita, KS


    Erscheinungsdatum :

    1977-03-01


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch




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    Design and performance of energy efficient propellers for Mach 0.8 cruise

    Mikkelson, D. C. / Blaha, B. J. / Mitchell, G. A. et al. | NTRS | 1977


    Wind Tunnel Performance of Four Energy Efficient Propellers Designed for Mach 0.8 Cruise

    Blaha, Bernard J. / Mikkelson, Daniel C. / Jeracki, Robert J. | SAE Technical Papers | 1979


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