公开(公告)号：WO1994000347A3

公开(公告)日：1994-01-06

申请号：PCT/US1993005797

申请日：1993-06-18

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： UNITED TECHNOLOGIES CORPORATION ,  CYCON, James, P. ,  HUNTER, David, H. ,  KOHLHEPP, Fred, W. ,  KRAUSS, Timothy, A. ,  MILLEA, Vincent, F. ,  FURNES, Kenneth, M. ,  FARRRELL, Marvin, D. ,  SANDY, David, F. ,  BEATTY, Robert, D. ,  HANSEN, Bruce, D.

IPC: B64C39/02

公开(公告)号：WO1994027866A1

公开(公告)日：1994-12-08

申请号：PCT/US1994006018

申请日：1994-05-26

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： UNITED TECHNOLOGIES CORPORATION ,  BYRNES, Francis, E. ,  KRAUSS, Timothy, A. ,  SCHMALING, David, N.

IPC: B64C27/33

CPC classification number: B64C27/33

Abstract: A flexbeam (10) for a soft inplane bearingless main rotor assembly (100) has six spanwise regions: a hub attachment region (12); a first tapered region (14); a second tapered region (16); a pitch region (18); a tapered outboard transition region (20); and a main rotor blade, torque tube attachment region (22). One described embodiment of the flexbeam is fabricated from continuous unidirectional fiber-glass plies having a 0 DEG fiber orientation, unidirectional fiberglass plies of varying lengths having a 0 DEG fiber orientation, and graphite cross plies having +/- 45 DEG fiber orientation. The distributed arrangements of ply endings cause kick loads in the flexbeam to be distributed relatively uniformly into the ply buildups.

Abstract translation: 用于软内平面无轴承主转子组件（100）的挠性梁（10）具有六个翼展区域：轮毂附接区域（12）; 第一锥形区域（14）; 第二锥形区域（16）; 俯仰区域（18）; 锥形外侧过渡区域（20）; 和主转子叶片，扭矩管附接区域（22）。 柔性梁的一个描述的实施例由具有0°纤维取向的连续单向玻璃纤维层，具有0°纤维取向的不同长度的单向玻璃纤维层和具有+/- 45°纤维取向的石墨交叉层制成。 帘布层结构的分布布置导致柔性梁中的脚蹬载荷相对均匀地分布到帘布层积聚中。

公开(公告)号：EP0646084B1

公开(公告)日：1998-05-20

申请号：EP93915385.4

申请日：1993-06-18

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： CYCON, James, P. ,  HUNTER, David, H. ,  KOHLHEPP, Fred, W. ,  KRAUSS, Timothy, A. ,  MILLEA, Vincent, F. ,  FURNES, Kenneth, M. ,  FARRRELL, Marvin, D. ,  SANDY, David, F. ,  BEATTY, Robert, D. ,  HANSEN, Bruce, D.

IPC: B64C39/02 ,  B64C27/20

CPC classification number: B64C27/10 ,  B64C27/14 ,  B64C27/20 ,  B64C27/33 ,  B64C27/605 ,  B64C39/024 ,  B64C2201/027 ,  B64C2201/044 ,  B64C2201/108 ,  B64C2201/127 ,  B64C2201/146 ,  B64C2201/162 ,  F02B2075/025 ,  F16D3/06 ,  F16D3/185

公开(公告)号：EP0700350B1

公开(公告)日：1997-07-23

申请号：EP94925077.3

申请日：1994-05-26

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： BYRNES, Francis, E. ,  KRAUSS, Timothy, A. ,  SCHMALING, David, N.

IPC: B64C27/33

CPC classification number: B64C27/33

Abstract: A flexbeam (10) for a soft inplane bearingless main rotor assembly (100) has six spanwise regions: a hub attachment region (12); a first tapered region (14); a second tapered region (16); a pitch region (18); a tapered outboard transition region (20); and a main rotor blade, torque tube attachment region (22). One described embodiment of the flexbeam is fabricated from continuous unidirectional fiber-glass plies having a 0° fiber orientation, unidirectional fiberglass plies of varying lengths having a 0° fiber orientation, and graphite cross plies having ± 45° fiber orientation. The distributed arrangements of ply endings cause kick loads in the flexbeam to be distributed relatively uniformly into the ply buildups.

公开(公告)号：EP0700350A1

公开(公告)日：1996-03-13

申请号：EP94925077.0

申请日：1994-05-26

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： BYRNES, Francis, E. ,  KRAUSS, Timothy, A. ,  SCHMALING, David, N.

IPC: B64C27

CPC classification number: B64C27/33

Abstract: A flexbeam (10) for a soft inplane bearingless main rotor assembly (100) has six spanwise regions: a hub attachment region (12); a first tapered region (14); a second tapered region (16); a pitch region (18); a tapered outboard transition region (20); and a main rotor blade, torque tube attachment region (22). One described embodiment of the flexbeam is fabricated from continuous unidirectional fiber-glass plies having a 0 DEG fiber orientation, unidirectional fiberglass plies of varying lengths having a 0 DEG fiber orientation, and graphite cross plies having +/- 45 DEG fiber orientation. The distributed arrangements of ply endings cause kick loads in the flexbeam to be distributed relatively uniformly into the ply buildups.

公开(公告)号：EP0646084A1

公开(公告)日：1995-04-05

申请号：EP93915385.0

申请日：1993-06-18

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： CYCON, James, P. ,  HUNTER, David, H. ,  KOHLHEPP, Fred, W. ,  KRAUSS, Timothy, A. ,  MILLEA, Vincent, F. ,  FURNES, Kenneth, M. ,  FARRRELL, Marvin, D. ,  SANDY, David, F. ,  BEATTY, Robert, D. ,  HANSEN, Bruce, D.

IPC: B64C27 ,  B64C29 ,  B64C39 ,  F16C11 ,  F16D1 ,  F16D3 ,  F16D41 ,  F16F15 ,  F16H1 ,  F02B75

CPC classification number: B64C27/10 ,  B64C27/14 ,  B64C27/20 ,  B64C27/33 ,  B64C27/605 ,  B64C39/024 ,  B64C2201/027 ,  B64C2201/044 ,  B64C2201/108 ,  B64C2201/127 ,  B64C2201/146 ,  B64C2201/162 ,  F02B2075/025 ,  F16D3/06 ,  F16D3/185

Abstract: An unmanned aerial vehicle (UAV) (10) has a composite toroidal fuselage structure (20) that surrounds a rotor assembly (100) that includes pair of coaxial, multi-bladed, counter-rotating rotors (200, 202). The toroidal fuselage structure (20) includes an annular C-shaped structure (430) that defines an internal cavity (436) and removable panel structures (464) mounted in combination with the annular C-shaped structure (430). The UAV has a drive train assembly (60) that includes a sprag clutch (62), an engine coupling subassembly (63), a transmission coupling subassembly (74), and a drive shaft (72) operative to couple torque between the UAV engine (54) and the rotor assembly (100) and configured to maximize allowable axial, angular, and/or parallel misalignments therebetween. The UAV further includes a coaxial transmission/center hub assembly (110), an integrated spline/cone seat subassembly (190), rotor blade subassemblies including pretwisted inner flexbeams (260), and snubber assemblies (230).