公开(公告)号：US20160108811A1

公开(公告)日：2016-04-21

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 centreline of the engine.

Abstract translation: 提供了一种涡轮风扇燃气涡轮发动机的机舱。 机舱的内壁限定了将空气引导到发动机的风扇部分中的进气口。 进气口具有进气口，喉部和扩散器。 扩散器具有流动系列中的第一和第二流量调节部分，两者之间的扩散器的流动横截面积随着与喉部的下游距离的增加而增加。 此外，在第二部分上，机舱内壁基本上位于具有偏离发动机中心线的顶点的倾斜圆锥的表面上。

公开(公告)号：US20130266419A1

公开(公告)日：2013-10-10

申请号：US13713828

申请日：2012-12-13

Applicant: ROLLS-ROYCE PLC

Inventor： Giles Anthony RICHARDSON ,  Christopher Thomas John SHEAF

IPC: F01D17/00

CPC classification number: F01D17/00 ,  F02C7/045 ,  F02C7/047 ,  F02C7/057 ,  Y02T50/671

Abstract: Intakes of gas turbine engines are subject to cross winds and high incidence cross flows which can affect the stability of air to the propulsive fan. An active flow control arrangement for an intake comprises a compressed gas supply pipe, a valve arrangement, a controller, and a compressed gas distribution pipe. The supply pipe is fluidly connects between a compressed gas source and the valve arrangement. The distribution pipe fluidly connects between the valve arrangement and intake surface for supply of compressed gas thereto. The active flow control arrangement is operable to supply compressed gas to the intake surface to prevent separation of a main air flow passing through the intake from the inlet surface thereby maintaining stability of the intake air flow to the fan.

Abstract translation: 燃气涡轮发动机的进气受到横风和大量的交叉流动，这可能影响推进风扇的空气稳定性。 用于入口的主动流量控制装置包括压缩气体供应管，阀装置，控制器和压缩气体分配管。 供应管道在压缩气体源和阀门装置之间流体连接。 分配管流体地连接在阀装置和进气表面之间，用于向其供应压缩气体。 主动流量控制装置可操作以将压缩气体供应到进气表面，以防止从入口表面分离通过进气口的主空气流，从而保持进气流向风扇的稳定性。

公开(公告)号：US20130263601A1

公开(公告)日：2013-10-10

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: F02C7/04

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角度，并且所述第二组孔的孔相对于所述孔的角度β成角度 径向线 角度α和β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。