The invention relates to the technical field of aero-turbofan engines, and provides an aero-turbofan engine and an outer duct nozzle, a notch is formed in the rear edge of an engine nacelle on the outer side of an engine hanger, a flow guide curved surface matched with the notch in shape is arranged on the nozzle surface of the outer duct nozzle, the notch is formed in the single side of the outer side of the engine hanger, and the flow guide curved surface is arranged on the outer side of the outer duct nozzle. A transition section between the notch and the rear edge of the engine nacelle comprises two transition fillets. A single-side notch-shaped nozzle of an outer duct of the turbofan engine is adopted, high-speed flow of exhaust of an engine fan is used for providing flow protection for wings, the lift coefficient is increased, and the adverse effect of an engine nacelle on the wings at a large angle of attack is reduced, so that the resistance and the weight of the nacelle are small, and the lift coefficient and the lift-drag ratio of an aircraft are increased; the spoiler has the potential to replace the function of an outer side nacelle spoiler, is small in resistance and free of weight cost, and can improve the performance and economical efficiency of commercial aircraft products, so that the product competitiveness is improved.

    本发明涉及航空涡扇发动机技术领域,提供了一种航空涡扇发动机及外涵道喷口,在发动机吊挂外侧的发动机短舱后缘设置有缺口,外涵道喷口型面上设置有与所述缺口形状相配合的导流曲面,所述缺口在发动机吊挂外侧单侧设置,所述缺口与发动机短舱后缘的过渡段包括两段过渡圆角。本发明采用涡扇发动机外涵道的单侧缺口形喷口,利用发动机风扇排气的高速流动为机翼提供流动保护,提升升力系数,降低大迎角下发动机短舱对机翼产生的不良影响,从而较小阻力,较小短舱重量,提升飞机升力系数和升阻比;本发明有潜力替代外侧短舱扰流片的功能,其阻力小、没有重量代价、能够提高商用飞机产品的性能和经济性,从而提高产品竞争力。


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    Titel :

    Aerial turbofan engine and outer duct nozzle


    Weitere Titelangaben:

    一种航空涡扇发动机及外涵道喷口


    Beteiligte:
    CUI ZHENG (Autor:in) / XUE HAOFEI (Autor:in) / YANG WEI (Autor:in)

    Erscheinungsdatum :

    2022-07-08


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT



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