公开(公告)号：EP0763743A1

公开(公告)日：1997-03-19

申请号：EP96114407.8

申请日：1996-09-09

申请人： GKN WESTLAND HELICOPTERS LIMITED

发明人： Brocklehurst, Alan

IPC分类号： G01P5/00 ,  G01P13/02 ,  B64D43/02

CPC分类号： B64C27/00 ,  B64D43/02 ,  G01P1/08 ,  G01P5/00 ,  G01P13/02

摘要： A method and apparatus for determining the airspeed of a rotary wing aircraft having a sustaining rotor (23) with a plurality of radially extending rotor blades (23A-23D) for rotation about a substantially vertical axis (24) comprises the steps of measuring an airflow sideslip angle (β) established during rotation of each rotor blade (23A-23D) by the vector of a radial flow component (29) due to the relative wind vector and the rotational velocity (30) perpendicular to a blade feathering axis, producing a signal representative of the sideslip angle (β), comparing the signal in processing means containing information on a known relationship between the sideslip angle (β) and airspeed (VT) providing an output signal representative of the airspeed and wind direction to a display means (39) which may display both the airspeed and wind direction (43).

摘要翻译： 一种用于确定旋转翼飞行器的空速的方法和装置，其具有具有多个径向延伸的用于围绕基本竖直轴线（24）旋转的径向延伸的转子叶片（23A-23D）的维持转子（23），包括以下步骤： 由于垂直于叶片羽化轴线的相对风矢量和旋转速度（30），通过径向流动分量（29）的矢量在每个转子叶片（23A-23D）旋转期间建立的侧滑角（β），产生 代表侧滑角（β）的信号，将包含侧滑角（β）和空速（VT）之间的已知关系的信息的处理装置中的信号进行比较，提供表示空速和风向的输出信号到显示装置（ 39），其可以显示空速和风向（43）。

公开(公告)号：EP0805107A2

公开(公告)日：1997-11-05

申请号：EP97106460.5

申请日：1997-04-18

申请人： GKN WESTLAND HELICOPTERS LIMITED

发明人： Perry, Frederick John ,  Brocklehurst, Alan ,  Harrison, Robert John

IPC分类号： B64C27/467

CPC分类号： B64C27/463

摘要： A propeller (10 a ) comprising a plurality of propeller blades (9 a ) each having a root end (11 a ) attached to the central propeller disc or hub (12 a ), an intermediate portion (13 a ) extending from the root end (11 a ) and having a generally aerofoil cross section extending chordwise between a leading edge (14 a ) and a trailing edge (15 a) , and the blade (9 a ) having a tip (19) at an end of the intermediate portion (13 a ) remote from the root end (11 a ), the tip (19) having a leading edge portion (20) extending forwardly from a junction (21) with the leading edge (14 a ) of the intermediate portion (13 a ) thus to provide a discontinuity or notch (25) in the leading edge (14 a ) of the blade (9 a ) at the junction (21).

摘要翻译： 包括多个螺旋桨叶片（9a）的螺旋桨（10a），每个螺旋桨叶片（9a）各自具有附接到中心推进盘或轮毂（12a）的根部端部（11a），从根部端部（11a）延伸的中间部分（13a） 在前缘（14a）和后缘（15a）之间弦向延伸的大致翼型横截面，并且叶片（9a）在远离根端的中间部分（13a）的端部具有尖端（19） 11a），具有从中间部分（13a）的前缘（14a）向前延伸的前缘部分（20）的尖端（19）从而在中间部分（13a）的前缘（14a）处提供不连续或缺口（25） 在连接处（21）处的叶片（9a）的前缘（14a）。

公开(公告)号：EP0763743B1

公开(公告)日：2001-07-25

申请号：EP96114407.8

申请日：1996-09-09

申请人： GKN WESTLAND HELICOPTERS LIMITED

发明人： Brocklehurst, Alan

IPC分类号： G01P5/00 ,  G01P13/02 ,  B64D43/02

CPC分类号： B64C27/00 ,  B64D43/02 ,  G01P1/08 ,  G01P5/00 ,  G01P13/02

公开(公告)号：EP0615903B1

公开(公告)日：1999-09-15

申请号：EP94301615.4

申请日：1994-03-08

申请人： GKN Westland Helicopters Limited

发明人： Brocklehurst, Alan ,  Perry, Frederick John

IPC分类号： B64C27/46 ,  B64C3/14

CPC分类号： B64C3/14 ,  B64C27/467 ,  B64C2003/145 ,  B64C2003/147 ,  Y02T50/12

公开(公告)号：EP0805107A3

公开(公告)日：1998-03-25

申请号：EP97106460.5

申请日：1997-04-18

申请人： GKN WESTLAND HELICOPTERS LIMITED

发明人： Perry, Frederick John ,  Brocklehurst, Alan ,  Harrison, Robert John

IPC分类号： B64C27/467

CPC分类号： B64C27/463

摘要： A propeller (10 a ) comprising a plurality of propeller blades (9 a ) each having a root end (11 a ) attached to the central propeller disc or hub (12 a ), an intermediate portion (13 a ) extending from the root end (11 a ) and having a generally aerofoil cross section extending chordwise between a leading edge (14 a ) and a trailing edge (15 a) , and the blade (9 a ) having a tip (19) at an end of the intermediate portion (13 a ) remote from the root end (11 a ), the tip (19) having a leading edge portion (20) extending forwardly from a junction (21) with the leading edge (14 a ) of the intermediate portion (13 a ) thus to provide a discontinuity or notch (25) in the leading edge (14 a ) of the blade (9 a ) at the junction (21).

公开(公告)号：EP0782956A1

公开(公告)日：1997-07-09

申请号：EP96120914.5

申请日：1996-12-27

申请人： GKN WESTLAND HELICOPTERS LIMITED

发明人： Perry, Frederick John ,  Harrison, Robert John ,  Brocklehurst, Alan

IPC分类号： B64C27/46

CPC分类号： B64C27/463

摘要： An aerofoil (40) comprises a leading edge (41) and a trailing edge (42) which define a mean chord length (C), and the aerofoil (40) having an inner or root end adapted for attachment to an aircraft, and an outer end which includes a tip (43) which is adapted in use to divide the airflow into two generally equal vortices (V1, V2) one (V1) being an inner vortex and the other (V2) being an outer vortex the inner vortex (V1) being arranged to trail from an outer edge (46a) of a forward region (44) of the tip (43) and pass over a rear region (45) of the tip (43).

摘要翻译： 机翼（40）包括限定平均弦长（C）的前缘（41）和后缘（42），并且具有适于附接到飞行器的内端或根端的翼型（40），以及 外端包括尖端（43），所述尖端（43）适于将气流分成两个大致相等的涡流（V1，V2），一个（V1）是内涡流，另一个（V2）是内涡流 V1）被布置成从尖端（43）的前部区域（44）的外边缘（46a）延伸并越过尖端（43）的后部区域（45）。