公开(公告)号：US09885285B2

公开(公告)日：2018-02-06

申请号：US14857083

申请日：2015-09-17

Applicant: ROLLS-ROYCE PLC

Inventor： Christopher Alan Mosley ,  Angus Roy Smith ,  Christopher Thomas John Sheaf ,  John Richard Wells

IPC: F02C7/04 ,  F02K3/06

CPC classification number: F02C7/04 ,  F02K3/06 ,  F05D2250/232

Abstract: A nacelle for a turbofan gas turbine engine is provided. An inner wall of the nacelle defines an air intake which directs air into the fan section of the engine. The intake has, in flow series, an intake lip, a throat and a diffuser. The diffuser has, in flow series, first and second flow conditioning sections over both of which the flow cross-sectional area of the diffuser increases with increasing downstream distance from the throat. In addition, over the second section the nacelle inner wall lies substantially on a surface of an oblique circular cone having an apex which is offset from the centerline of the engine.

公开(公告)号：US08931252B2

公开(公告)日：2015-01-13

申请号：US13713840

申请日：2012-12-13

Applicant: Rolls-Royce PLC

Inventor： Giles Anthony Richardson ,  David MacManus ,  Christopher Thomas John Sheaf

IPC: F02G3/00 ,  F02C7/04 ,  F02C3/32 ,  F02C7/045 ,  F02C7/047 ,  F02C7/057

CPC classification number: F02C7/04 ,  B64C21/04 ,  B64C2230/14 ,  B64D33/02 ,  B64D2033/0206 ,  B64D2033/0226 ,  B64D2033/0233 ,  F02C3/32 ,  F02C7/045 ,  F02C7/047 ,  F02C7/057 ,  F05D2260/601 ,  Y02T50/166 ,  Y10T137/0645

Abstract: A gas turbine engine having a rotational axis, an intake and a compressed gas source; the intake includes a lining having a facing which defines an inlet surface and an array of holes; the array of holes includes at least a first set of holes and a second set of holes, the holes of the first set of holes are angled a relative to a radial line and the holes of the second set of holes are angled β relative to the radial line; the angles α and β are different. An active flow control arrangement including a compressed gas supply pipe, a valve arrangement, a controller, a compressed gas distribution pipe may be provided. Compressed gas may be provided to prevent the formation of separation of a main gas flow through the intake and prevent or remove ice accretion.

Abstract translation: 一种具有旋转轴线，进气口和压缩气体源的燃气涡轮发动机; 入口包括具有限定入口表面和孔阵列的面的衬里; 所述孔阵列包括至少第一组孔和第二组孔，所述第一组孔的孔相对于径向线成一定角度，并且所述第二组孔的孔成角度的角度; 相对于径向线; 角度α和＆bgr; 是不同的。 可以提供包括压缩气体供应管，阀装置，控制器，压缩气体分配管的主动流量控制装置。 可以提供压缩气体以防止通过进气口的主气流的分离形成并防止或去除积冰。