公开(公告)号：US20240002049A1

公开(公告)日：2024-01-04

申请号：US18037887

申请日：2021-11-21

申请人： Overair, Inc.

发明人： William Martin Waide

IPC分类号： B64C29/00 ,  B64C27/72 ,  B64C3/32

CPC分类号： B64C29/0033 ,  B64C27/72 ,  B64C3/32 ,  B64C2027/7216

摘要： In one aspect the subject matter herein describes a cable tilt actuator for an aircraft propulsion unit. One embodiment comprises: a cable spool, fore and aft cable sections, a compression beam, a compression beam guide, and a linear actuator. As the linear actuator drives the compression beam, relative rotation is imposed between the compression beam and the spool. Described, in one aspect, is an embodiment configured to tilt an aircraft propulsion unit.

公开(公告)号：US11702195B2

公开(公告)日：2023-07-18

申请号：US17385607

申请日：2021-07-26

申请人： AIRBUS HELICOPTERS TECHNIK GMBH

发明人： Andre Hausberg ,  Steffen Hartmann

IPC分类号： B64C27/00 ,  B64C27/605 ,  B64C27/46 ,  B64C27/72

CPC分类号： B64C27/001 ,  B64C27/46 ,  B64C27/605 ,  B64C2027/004 ,  B64C2027/7216 ,  Y02T50/30

摘要： In one aspect, the present disclosure provides a system for reducing vibrations or stresses in a rotor blade system. The system may include at least three rotor blades configured to be rotated about a main rotor axis, where each of the three rotor blades may be adjusted by at least one electrically-adjustable control rod of a plurality of control rods. The plurality of control rods may include a first number of control rods forming a first group, and the plurality of control rods may include a second number of control rods forming a second group. A first circuit for may activate or deactivate the first group of control rods, and a second circuit may activate or deactivate the second group of control rods.

公开(公告)号：US09682771B2

公开(公告)日：2017-06-20

申请号：US13966951

申请日：2013-08-14

申请人： Sikorsky Aircraft Corporation

发明人： John Knag ,  Anthony Litwinowicz

IPC分类号： B64C27/04 ,  B64C27/54 ,  B64C27/72

CPC分类号： B64C27/04 ,  B64C27/54 ,  B64C2027/7216 ,  Y02T50/34

摘要： Controlling rotor blades of a rotor assembly includes determining an azimuthal position of a rotor assembly and identifying a lateral control command value, a longitudinal control command value and a collective control command value of a rotor assembly control system. A sine value and a cosine value of the azimuthal position are calculated and separate blade commands signals are generated for each separate blade of the rotor assembly to control a position of each blade independent of each other blade. The blade command signals are generated based on combining the sine and cosine values of the azimuthal position with the lateral control command value, the longitudinal control command value and the collective control command value.

公开(公告)号：US09162760B2

公开(公告)日：2015-10-20

申请号：US13565526

申请日：2012-08-02

申请人： Carlos A. Fenny

发明人： Carlos A. Fenny

IPC分类号： B64C27/64 ,  F15B7/00 ,  F04B1/047 ,  B64C27/72 ,  B64C27/06 ,  B64C27/12 ,  B64C27/605

CPC分类号： B64C27/64 ,  B64C27/06 ,  B64C27/12 ,  B64C27/605 ,  B64C27/72 ,  B64C2027/7216 ,  F04B1/047 ,  F04B1/0474 ,  F15B7/00 ,  F15B7/001 ,  F15B7/003 ,  Y02T50/34

摘要： According to one embodiment, a radial fluid device contains a cylinder block mounted for rotation, a first and second plurality of radially extending cylinders, and a first and second cam. The cylinder block contains the first and second plurality of radially extending cylinders, and each radially extending cylinder contains a piston. The cams are disposed about each plurality of radially extending cylinders, and the second cam has at least one more lobe than the first cam.

摘要翻译： 根据一个实施例，径向流体装置包括安装用于旋转的气缸体，第一和第二多个径向延伸的气缸，以及第一和第二凸轮。 气缸体包含第一和第二多个径向延伸的气缸，并且每个径向延伸的气缸包含活塞。 凸轮围绕每个多个径向延伸的气缸设置，并且第二凸轮具有比第一凸轮至少多一个凸角。

公开(公告)号：US09061760B2

公开(公告)日：2015-06-23

申请号：US13565577

申请日：2012-08-02

申请人： Carlos A. Fenny

发明人： Carlos A. Fenny

IPC分类号： B64C27/52 ,  B64C27/72 ,  F04C9/00 ,  F15B15/12

CPC分类号： B64C27/72 ,  B64C2027/7216 ,  F04C9/002 ,  F15B15/12 ,  Y02T50/34

摘要： According to one embodiment, a rotary blade actuator includes a housing, a vane disposed within the housing, a shaft disposed at least partially within the housing and coupled to the vane. The vane comprises a first vane surface disposed within a first chamber between a first fluid opening and a second fluid opening and a second vane surface disposed within a second chamber between a third fluid opening and a fourth fluid opening. The first and third fluid openings are configured to provide a first fluid to the first chamber and the second chamber at a first pressure, the second fluid opening is configured to provide a second fluid to the first chamber at a second pressure, and the fourth fluid opening is configured to provide a third fluid to the second chamber at a third pressure different from the second pressure.

摘要翻译： 根据一个实施例，旋转刀片致动器包括壳体，设置在壳体内的叶片，至少部分地设置在壳体内并联接到叶片的轴。 叶片包括设置在第一流体开口和第二流体开口之间的第一室内的第一叶片表面和设置在第三流体开口和第四流体开口之间的第二室内的第二叶片表面。 第一和第三流体开口构造成在第一压力下向第一室和第二室提供第一流体，第二流体开口被配置成在第二压力下向第一室提供第二流体，第四流体 开口构造成在不同于第二压力的第三压力下向第二室提供第三流体。

公开(公告)号：US08858179B2

公开(公告)日：2014-10-14

申请号：US12959922

申请日：2010-12-03

申请人： Devon Cowles

发明人： Devon Cowles

IPC分类号： B64C11/38 ,  B64C27/10 ,  B64C27/32 ,  B64C27/12 ,  B64C27/72

CPC分类号： B64C27/10 ,  B64C27/12 ,  B64C27/32 ,  B64C2027/7216 ,  Y02T50/34

摘要： A rotor control system operatively linked to a plurality of rotor blades includes a swashplate assembly having a stationary member and a rotating member. A blade attachment member is operatively connected to the plurality of rotor blades and a control horn is operatively connected to the blade attachment member and one of the plurality of rotor blades. At least one hydraulic actuator member is operatively coupled to the control horn and at least one hydraulic actuator element is operatively coupled to the swashplate assembly and the at least one hydraulic actuator member. The at least one hydraulic actuator member transmits control signals from the swashplate assembly to the one of the plurality of rotor blades through the at least one hydraulic actuator member.

摘要翻译： 可操作地连接到多个转子叶片的转子控制系统包括具有固定构件和旋转构件的斜盘组件。 叶片附接构件可操作地连接到多个转子叶片，并且控制喇叭可操作地连接到叶片附接构件和多个转子叶片中的一个。 至少一个液压致动器构件可操作地联接到控制喇叭，并且至少一个液压致动器元件可操作地联接到斜盘组件和至少一个液压致动器构件。 至少一个液压致动器构件通过至少一个液压致动器构件将控制信号从旋转斜盘组件传递到多个转子叶片中的一个。

公开(公告)号：US08845290B1

公开(公告)日：2014-09-30

申请号：US12976687

申请日：2010-12-22

申请人： Richard H. Lugg

发明人： Richard H. Lugg

IPC分类号： B64C27/78

CPC分类号： B64C27/68 ,  B64C2027/7216 ,  Y02T50/34

摘要： A rotorcraft having an operational range and a plurality of rotor blades, each rotor blade capable of assuming an angular pitch, utilizes a control apparatus a mechanism for independently controlling an angular pitch value of each of the plurality of rotor blades wherein a collective sum of the angular pitch values of the plurality of rotor blades is not constant over the operational range of the rotorcraft.

摘要翻译： 具有操作范围的旋翼航空器和多个转子叶片，每个转子叶片能够呈现角度间距，利用控制装置，用于独立地控制多个转子叶片中的每一个的角度间距值的机构，其中， 多个转子叶片的角度间距值在旋翼航空器的操作范围内不是恒定的。

公开(公告)号：US4899641A

公开(公告)日：1990-02-13

申请号：US194400

申请日：1988-05-16

申请人： Zafer N. Khan

发明人： Zafer N. Khan

IPC分类号： B64C27/54 ,  B64C27/72

CPC分类号： B64C27/54 ,  B64C27/72 ,  B64C2027/7216 ,  Y02T50/34

摘要： A novel electro-hydraulic control system for use with a helicopter includes a plurality of electro-hydraulic modules which provide control signals to corresponding blade actuators. A controller receives helicopter parameter input signals as well as pilot command signals and generates the control signals in accordance with preestablished algorithms. The system is characterized by a hydraulic slip ring that transmits the hydraulic control signals from the fuselage to the rotating assembly. Consequently, the present system provides "fly by wire" operation with individually addressable helicopter blades.

公开(公告)号：US20230192284A1

公开(公告)日：2023-06-22

申请号：US17943732

申请日：2022-09-13

申请人： Jaunt Air Mobility, LLC

发明人： Jay W. CARTER, Jr. ,  Jeffrey R. LEWIS ,  M. Keith ROBINSON

IPC分类号： B64C27/72 ,  B64C27/33 ,  B64C27/26 ,  B64C27/82 ,  B64C27/02 ,  B64C27/57 ,  B64C27/59

CPC分类号： B64C27/72 ,  B64C27/33 ,  B64C27/26 ,  B64C27/82 ,  B64C27/025 ,  B64C27/57 ,  B64C27/59 ,  B64C2027/8281 ,  B64C2027/8272 ,  B64C2027/7216 ,  B64C2027/8236 ,  Y02T50/30

摘要： A system to prevent or limit resonance in a rotocraft. The system comprises an airframe, a rotor system having a natural frequency and including a rotor and a mast attached to the airframe, and a non-linear spring positioned between the rotor system and the airframe. The rotor system and the airframe are operable to move relative to each other as the rotor system begins to oscillate. The non-linear spring is configured to be deformed when the rotor system and the airframe move relative to each other such that the deformation of the non-linear spring causes the natural frequency of the rotor system to change. Also disclosed is a related method for preventing or limiting resonance in a rotorcraft.

公开(公告)号：US09896199B2

公开(公告)日：2018-02-20

申请号：US14135941

申请日：2013-12-20

申请人： Bell Helicopter Textron Inc.

发明人： Christopher Foskey ,  Drew Sutton ,  Frank B. Stamps

IPC分类号： B64C27/72 ,  B64C27/00 ,  B64C27/35 ,  B64C27/37

CPC分类号： B64C27/72 ,  B64C27/001 ,  B64C27/35 ,  B64C27/37 ,  B64C2027/003 ,  B64C2027/004 ,  B64C2027/7216

摘要： A rotor hub can include a yoke, a mast, and one or more radially oriented actuators. The first radial actuator and the second radial actuator each have a piston configured to impart a translation of the yoke relative to the mast. The radial actuators are configured to attenuate in-plane whirling vibrations. The rotor hub can also have actuators coupled between the mast and the yoke for attenuating flapping and vertical vibrations.