The present disclosure relates to a propfan engine (100) comprising: one or more rotor stages (110, 120) comprising a plurality of rotors; and an outer wall (130) comprising an outer profile (132), at least a portion of the outer profile defining a substantially circular cross-section, wherein the diameter of the substantially circular cross-section increases in the direction of flow over the outer wall and downstream of a leading edge (112, 122) of the rotors, and the diameter increases at substantially all points defining the circumference of the substantially circular cross-section. The present disclosure further relates to propfan engine (100) comprising: one or more rotor stages (110, 120) comprising a plurality of rotors; and an outer wall (130) comprising an outer profile (132), the outer profile defining a cross-section, wherein the cross-section of the outer profile comprises a maximum diameter (134, 136) at a point upstream of a leading edge (112, 122) of the rotors, the diameter reducing between the maximum diameter and the leading edge of the rotors, and wherein the outer profile comprises a point of inflection (135, 137) between the maximum diameter and the leading edge of the rotors.


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    Titel :

    Propfan engine


    Weitere Titelangaben:

    Propfantriebwerk
    Moteur propfan


    Beteiligte:

    Erscheinungsdatum :

    19.12.2018


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    F02K JET-PROPULSION PLANTS , Strahltriebwerke / B64C AEROPLANES , Flugzeuge / F01D Strömungsmaschinen [Kraft- und Arbeitsmaschinen oder Kraftmaschinen], z.B. Dampfturbinen , NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES / F02C Gasturbinenanlagen , GAS-TURBINE PLANTS



    Propfan engines

    KUZNETSOV, N. | AIAA | 1993


    Propfan Propulsion System Tested

    Emerald Group Publishing | 1986


    Electronic control system for a propfan engine

    ZICKWOLF, JR., HERBERT / COLE, E. | AIAA | 1988


    Advanced propfan engine characteristics and technology needs

    ANDERSON, R. / GILL, J. / NOVICK, A. | AIAA | 1983


    Propfan noise propagation

    George, Albert R. / Sim, Ben WEL-C. | NTRS | 1993