公开(公告)号：US20160130973A1

公开(公告)日：2016-05-12

申请号：US14925149

申请日：2015-10-28

Applicant: ROLLS-ROYCE PLC

Inventor： Vasileios PACHIDIS ,  Carlos SORIA

IPC: F01D17/14 ,  F01D25/10 ,  F01D9/04

CPC classification number: F01D17/14 ,  F01D5/146 ,  F01D5/148 ,  F01D9/041 ,  F01D17/162 ,  F01D25/10 ,  F04D29/563 ,  F04D29/684 ,  F05D2220/32 ,  F05D2240/12 ,  F05D2250/14 ,  F05D2250/75 ,  F05D2270/17

Abstract: A gas turbine engine variable guide vane has a fixed portion on an upstream side, a movable flap on a downstream side and a transfer slot between a fixed portion trailing surface and a movable flap leading surface. The movable flap has opposite pressure and suction sides along a chord line between leading and trailing edges, and is rotatable about an axis along a movable flap span over a range of angular positions between open and closed. The trailing surface has a substantially U-shaped profile with first and second branches respectively partially around the pressure and suction sides. The transfer slot has inlet and exhaust ports respectively on the pressure and suction sides. In the closed position the suction side contacts the second branch closing the exhaust port, and in the open position the second branch directs a first air flow through the transfer slot tangentially over the suction surface.

Abstract translation: 燃气涡轮发动机可变导向叶片具有上游侧的固定部分，下游侧的可动翼片和固定部分后表面与可动翼片前导表面之间的传送槽。 可移动翼片沿着前缘和后缘之间的弦线具有相对的压力和吸力侧，并且在开和关之间的角位置范围内可沿着可移动的翼片跨度绕轴线旋转。 后表面具有基本上U形的轮廓，其中第一和第二分支分别部分地围绕压力侧和吸力侧。 输送槽分别在压力和吸力侧有进气口和排气口。 在关闭位置，吸入侧接触关闭排气口的第二分支，并且在打开位置，第二分支引导第一气流沿切向切向吸引表面。