公开(公告)号：US12129023B2

公开(公告)日：2024-10-29

申请号：US17565789

申请日：2021-12-30

Applicant: Sikorsky Aircraft Corporation

Inventor： Joseph Pantalone, III ,  Timothy James Conti ,  Frank M. Caputo ,  Sven R. Lofstrom ,  Keith M. Schenone ,  Robert D. Higbie ,  Eric Charles Boyle ,  Alicia Fernandez

IPC: B23P6/00 ,  B23P6/04 ,  B23P15/04 ,  B29C65/00 ,  B29C65/78 ,  B29D99/00 ,  B64C27/46 ,  B29L31/08 ,  B64C27/473

CPC classification number: B64C27/463 ,  B23P6/002 ,  B23P6/045 ,  B23P15/04 ,  B29C65/7841 ,  B29C66/721 ,  B29D99/0025 ,  B29L2031/082 ,  B64C2027/4736

Abstract: A method of mounting a replacement tip section to an exposed end of a rotor blade includes removing an existing tip section from the rotor blade to create the exposed end of the rotor blade, installing the rotor blade having the exposed end onto a holding fixture, assembling the replacement tip section about the exposed end of the rotor blade, positioning a bonding fixture about the replacement tip section, and curing the replacement tip section to the exposed end of the rotor blade.

公开(公告)号：US20240336357A1

公开(公告)日：2024-10-10

申请号：US18132330

申请日：2023-04-07

Applicant: Lockheed Martin Corporation

Inventor： Timothy James Conti ,  Eric S. Parsons ,  Joshua A. Breon ,  Benjamin E. Isabella ,  William Paul Adams ,  Christopher Michael Colschen

IPC: B64C27/46 ,  B64C27/473

CPC classification number: B64C27/463 ,  B64C27/473

Abstract: A rotor blade configured to be installed on a rotary-wing aircraft includes a main blade body including an inboard end configured to be coupled to a rotor blade hub and an outboard end. The rotor blade includes a blade tip removably coupled to the outboard end of the main blade body, the blade tip including an inner cavity. The rotor blade further includes a tip block including an inboard portion coupled to the outboard end of the main blade body and a cantilevered portion extending beyond the outboard end of the rotor blade and into the inner cavity of the blade tip.

公开(公告)号：US11858625B1

公开(公告)日：2024-01-02

申请号：US16448311

申请日：2019-06-21

Applicant: Amazon Technologies, Inc.

Inventor： Shmuel Eisenmann ,  Ofer Rubin

IPC: B64C39/02 ,  B64C27/46 ,  G01S15/93 ,  B64C19/02

CPC classification number: B64C39/024 ,  B64C19/02 ,  B64C27/46 ,  G01S15/93 ,  B64U2201/00

Abstract: Disclosed are systems and methods to detect objects within an environment by an aerial vehicle. An aerial vehicle may detect objects within an environment based on propeller noises emitted by the aerial vehicle that are reflected back to the aerial vehicle by objects in the environment. The propeller noise may be noise that is generated during normal operation of one or more propellers. The propeller noise emitted by the propellers of the aerial vehicle propagates into the environment around the aerial vehicle and reflects off any objects within the environment. Because the noise generated by each propeller is distinguishable, sets of solutions (distance and all directions) may be computed for each propeller. The intersections of those sets of solutions is representative of the actual distance and direction of the object with respect to the aerial vehicle.

公开(公告)号：US11661177B2

公开(公告)日：2023-05-30

申请号：US16937279

申请日：2020-07-23

Applicant: Wing Aviation LLC

Inventor： Giulia Pantalone ,  André Prager

IPC: B64C27/57 ,  B64C27/46 ,  B64C27/473 ,  B64C11/20 ,  B64C39/02 ,  B64C27/39 ,  B64C27/72 ,  B64U10/13 ,  B64U30/20

CPC classification number: B64C27/57 ,  B64C11/20 ,  B64C27/39 ,  B64C27/463 ,  B64C27/473 ,  B64C39/024 ,  B64C2027/7294 ,  B64U10/13 ,  B64U30/20

Abstract: A propeller blade for an unmanned aerial vehicle (“UAV”) is disclosed. The UAV includes a plurality of lift propellers and at least one thrust propeller. Each of the plurality of thrust propellers includes a thrust propeller blade coupled to a hub of the thrust propeller. The thrust propeller blade is configured such that a centrifugal force acting on the thrust propeller blade causes a thrust propeller disk area to increase from a first disk area when the UAV is in a first operational state to a second disk area when the UAV is in a second operational state.

公开(公告)号：US11618558B2

公开(公告)日：2023-04-04

申请号：US17237520

申请日：2021-04-22

Applicant: LEONARDO S.P.A.

Inventor： Luigi Maria Bottasso

IPC: B64C27/46 ,  B64C27/04 ,  B64C27/59 ,  B64C27/72

Abstract: A rotor for a hover-capable aircraft is described that comprises: a hub rotatable about a first axis and at least two blades hinged to the hub; each blade comprises a main portion hinged to the hub and a tip portion, which is arranged radially outermost with respect to first axis with respect to the corresponding main portion; the tip portion of each blade is movable with respect to the corresponding main portion of that blade; the tip portion of each blade is selectively movable with respect to the corresponding main portion of that blade between a first position, in which it defines a dihedral or anhedral angle with respect to the corresponding main portion; and a second position, in which it defines a positive or negative sweep angle with respect to the corresponding main portion.

公开(公告)号：US20230056671A1

公开(公告)日：2023-02-23

申请号：US17893610

申请日：2022-08-23

Applicant: Ingenieurbüro Immig GmbH

Inventor： Mario Immig

IPC: H02K7/18 ,  B64D27/24 ,  B64C27/46 ,  F03D9/32 ,  F03D1/04 ,  B60L8/00

Abstract: A vehicle having an energy conversion system for converting wind energy into electrical energy includes a rotor with a rotor axis of rotation, which is oriented substantially parallel to the longitudinal axis of the vehicle or forms an acute angle with the longitudinal axis, wherein the energy conversion system is closer to the rear end than to the front end of the vehicle. Also described is a trailer comprising an energy conversion system for converting wind energy into electrical energy. In addition, an aircraft is described, including an energy conversion system for converting wind energy into electrical energy. Moreover, the energy conversion system is usable to improve the driving characteristics of vehicles. A headwind deflection system for vehicles also includes an energy conversion system for converting wind energy into electrical energy, comprising a rotor, a flow channel and a wind funnel. In addition, a kit of parts may include a vehicle and the headwind deflection system.

公开(公告)号：US20220274706A1

公开(公告)日：2022-09-01

申请号：US17681344

申请日：2022-02-25

Applicant: AERONEXT INC.

Inventor： Yoichi SUZUKI

IPC: B64D1/10 ,  B64C27/46

Abstract: A flight vehicle capable of improving the accuracy of the arrival position of baggage. The flight vehicle according to the present disclosure includes a mounting unit that holds a mounted object, holds the mounting unit via a string member, and has a moving means including a rotor blade provided between the upper end and the lower end of the mounting unit, when the mounting unit is viewed from the side.

公开(公告)号：US20220258855A1

公开(公告)日：2022-08-18

申请号：US17619107

申请日：2020-05-26

Applicant: LEONARDO S.P.A.

Inventor： Attilio Colombo ,  Gabriele Cazzulani ,  Simone Cinquemani ,  Ferruccio Resta ,  Francesco Braghin

IPC: B64C27/00 ,  B64C27/06 ,  B64C27/46

Abstract: A rotor for a hover-capable aircraft is described that comprises: a hub rotating about an axis and, in turn, comprising a plurality of blades, a mast connectable to a power unit of the aircraft and operatively connected to the hub to drive the hub in rotation about said axis, and an attenuating device to attenuate the transmission of vibrations from the mast to the aircraft parallel to said; the attenuating device, in turn, comprising a casing, a first mass free to oscillate parallel to said axis with respect to the casing and elastically connected to the casing, a second mass free to oscillate parallel to said axis, connection means adapted to make the first and second masses integrally movable along said axis when the angular speed of the mast assumes a first value, and actuator means activatable to decouple the first and second masses when the angular speed of the mast assumes a second value, different from the first value.

公开(公告)号：US11370536B2

公开(公告)日：2022-06-28

申请号：US16907071

申请日：2020-06-19

Applicant: Textron Innovations Inc.

Inventor： Jonathan Andrew Knoll ,  George Matthew Thompson ,  Nicholas Ralph Carlson

IPC: F04D29/52 ,  B64C29/00 ,  B64C11/00 ,  B64C27/46 ,  B64C27/72

Abstract: A tip gap control system for a ducted aircraft includes a flight control computer including a blade length control module configured to generate a blade tip actuator command and a proprotor system in data communication with the flight control computer. The proprotor system includes a duct and proprotor blades surrounded by the duct. Each of the proprotor blades includes an active blade tip movable into various positions including a retracted position and an extended position. The tip gap control system also includes one or more actuators coupled to the active blade tips. The one or more actuators move the active blade tips between the various positions based on the blade tip actuator command, thereby controlling a tip gap between the proprotor blades and the duct.

公开(公告)号：US20220089278A1

公开(公告)日：2022-03-24

申请号：US17541728

申请日：2021-12-03

Applicant: Beijing Airlango Technology Co., LTD.

Inventor： Dongyue ZHOU ,  Aolin GAO ,  Peng LU ,  Cong MA ,  Hesen TANG ,  Jinlai LIU ,  Zhenkai LI ,  Hengsheng SUN ,  Bo YAN ,  Xinhong JIANG

IPC: B64C27/46 ,  B64C27/467 ,  B64C27/473 ,  B64C27/32

Abstract: The present disclosure relates to a blade and a rotor of a rotor craft, and a rotor craft. The blade includes a blade root, a blade tip, and an upper aerofoil and a lower aerofoil disposed vertically opposite to each other. One sides of the upper aerofoil and the lower aerofoil are connected to form a front edge, and other sides of the upper aerofoil and the lower aerofoil are connected to form a tail edge. The upper aerofoil is defined by an upper aerofoil characteristic line formed by (kx, ky, kz) defined by a plurality of coordinate pairs. The lower aerofoil is defined by a lower aerofoil characteristic line formed by (kx, ky, kz) defined by a plurality of coordinate pairs.