公开(公告)号：US08857760B2

公开(公告)日：2014-10-14

申请号：US13644980

申请日：2012-10-04

Applicant: Rolls-Royce PLC

Inventor： Stephen Geoffrey Brown ,  Lorenzo Raffaelli

IPC: B64D33/02 ,  B64D29/00 ,  B64D29/06 ,  B64D29/02 ,  B64C11/00

CPC classification number: B64C11/001 ,  B64D29/02 ,  B64D33/02 ,  B64D33/04 ,  F02C7/042 ,  F02K1/09 ,  F02K1/12 ,  F02K5/00

Abstract: This invention relates to a propulsive unit for an aircraft, comprising: a nacelle which defines a duct for channeling an airflow when in use and which provides an outwardly facing surface of the propulsive unit, the outwardly facing surface having an aerodynamic shape; a fan unit for accelerating the airflow within the duct when in use; wherein the duct has an inlet and an outlet and the nacelle is operable to adjust the either or both of the area of the inlet and outlet while substantially retaining the aerodynamic shape of the outwardly facing surface.

Abstract translation: 本发明涉及一种用于飞行器的推进单元，包括：机舱，其限定用于在使用时引导气流并且提供推进单元的面向外的表面的管道，面向外的表面具有空气动力学形状; 风扇单元，用于在使用时加速管道内的气流; 其中所述管道具有入口和出口，并且所述机舱可操作以调节所述入口和出口的所述区域中的一个或两者，同时基本上保持面向外的表面的空气动力学形状。