公开(公告)号：US20240158111A1

公开(公告)日：2024-05-16

申请号：US18508395

申请日：2023-11-14

申请人： Toofon, Inc.

发明人： Michael V. OL ,  Morteza GHARIB ,  Amir EMADI

IPC分类号： B64U30/297 ,  B64U10/16 ,  B64U30/24

CPC分类号： B64U30/297 ,  B64U10/16 ,  B64U30/24 ,  B64U2201/10

摘要： A coaxial rotor pair assembly, e.g., for a flight vehicle or drone, with a fixed-pitch rotor and a variable-pitch rotor that are axially spaced relative to one another on a rotor axis for rotation via rotor shafts. A first motor and a second motor are provided for the rotors to drive the respective rotor about the rotor axis. The first and second motors are each controlled by a speed controller, and speed controllers are controlled by a vehicle flight controller. A collective pitch of the plurality of blades of the variable-pitch rotor is configured to be selectively varied by the vehicle flight controller during rotation of both the fixed-pitch rotor and the variable-pitch rotor about the rotor axis. The plurality of blades of the fixed-pitch rotor are maintained a constant, fixed pitch, e.g., during operation of the flight vehicle.

公开(公告)号：US11738864B2

公开(公告)日：2023-08-29

申请号：US17065563

申请日：2020-10-08

申请人： Greg Chando ,  Zachary Stein

发明人： Greg Chando ,  Zachary Stein

IPC分类号： B64C29/00 ,  B64C39/02 ,  B64D27/24 ,  B64C27/605 ,  B64U10/20 ,  B64C27/52 ,  B64C27/28 ,  B64U30/297 ,  B64U30/10 ,  B64U30/20 ,  B64U50/19

CPC分类号： B64C39/024 ,  B64C27/28 ,  B64C27/52 ,  B64C27/605 ,  B64C29/0033 ,  B64D27/24 ,  B64U10/20 ,  B64U30/297 ,  B64U30/10 ,  B64U30/20 ,  B64U50/19

摘要： An apparatus providing continuous tilt and variable pitch for rotors on a fixed wing VTOL aircraft. An actuator on a housing rotates a first pivot point on a motor mount to tilt a motor to horizontal and vertical positions. Simultaneously, an actuator on the motor mount rotates a fork on a second pivot point on the motor mount to adjust the pitch of the rotors attached to a free end of the motor's drive shaft. A lower swash plate on the drive shaft is attached to the fork. An upper swash plate on the drive shaft is attached to the rotors. The swash plates are attached to each other with a shaft bushing attached to a shaft ball bearing. The shaft bushing allows both swash plates to move linearly along the shaft when the fork is rotated. The shaft ball bearing allows the upper swash plate to rotate with the drive shaft while the lower swash plate remains stationary.

公开(公告)号：US20230264839A1

公开(公告)日：2023-08-24

申请号：US18172370

申请日：2023-02-22

申请人： ideaForge Technology Pvt. Ltd.

发明人： Amey Damjee

IPC分类号： B64U30/297

CPC分类号： B64U30/297

摘要： An improved propeller system is disclosed, including at least one resilient component configured with a mounting arrangement of a propeller of the propeller system. The resilient component is made of a resilient material that allows the propeller to tilt about a tethering axis under conditions of differential lift force on blades of the propeller under an advancing condition and a retreating condition. The resilient component includes a pair of cutouts for locating inserts made of a rigid material and positioned with a longitudinal axis of the inserts oriented in radial direction. The orientation of the inserts results in a radially oriented line contact between the propeller and the inserts to ensure that tilting of the propeller is about longitudinal axis of the inserts, defining the tethering axis of the propeller system.

公开(公告)号：US20240132210A1

公开(公告)日：2024-04-25

申请号：US18342992

申请日：2023-06-27

申请人： Lockheed Martin Corporation

发明人： Marc T. Angelucci

IPC分类号： B64C39/02 ,  B64C27/08 ,  B64U10/14 ,  B64U20/87 ,  B64U30/297

CPC分类号： B64C39/024 ,  B64C27/08 ,  B64U10/14 ,  B64U20/87 ,  B64U30/297 ,  B64U10/13

摘要： The present disclosure is directed to unmanned aerial vehicle (UAV) comprising a convertible body operably coupled to at least one sensor, and further configured to rotate at least about a longitudinal axis, thereby providing a full field of regard for the at least one sensor, and a plurality of arms extending laterally from the convertible body, each arm of the plurality of arms having a rotor assembly coupled thereto.

公开(公告)号：US20240002078A1

公开(公告)日：2024-01-04

申请号：US18035463

申请日：2021-11-29

申请人： EFIX AVIATION LTD

发明人： Efraim KASTIEL

IPC分类号： B64U30/297 ,  B64U10/13 ,  B64U50/19 ,  B64U70/40

CPC分类号： B64U30/297 ,  B64U10/13 ,  B64U50/19 ,  B64U70/40 ,  B64U2201/10

摘要： Rotorcraft including a fuselage and at least three rotor system arms each having a rotor system. Each rotor system includes a mast having at least two rotor blades and an electric rotor motor. At least one rotor system arm includes a support mechanism for pivotally supporting a floating mast about at least one pivot axis whereby the floating mast is tillable relative to a fiducial tilt position. The floating mast has a controllable cyclic rotor blade pitch. A mast tilt measurement mechanism provides a mast tilt feedback signal regarding a measured tilt position of a floating mast relative to its fiducial tilt position. A flight control system continuously controls the at least three electric rotor motors and the floating masts cyclic rotor blade pitch in response to a desired input maneuver and its mast tilt feedback signal.

公开(公告)号：US20240300679A1

公开(公告)日：2024-09-12

申请号：US18283233

申请日：2023-04-24

申请人： JIANGSU UNIVERSITY

发明人： Yue SHEN ,  Jincheng CHU ,  Zhixiang SHI ,  Yayun SHEN ,  Lingfei ZHANG ,  Minghui LIU ,  Dewei WANG ,  Yicen LI ,  Zhiwei SUN

IPC分类号： B64U30/297 ,  B64U20/80 ,  B64U101/40 ,  G05D1/85 ,  G05D107/20 ,  G05D109/25

CPC分类号： B64U30/297 ,  B64U20/80 ,  G05D1/857 ,  B64U2101/40 ,  B64U2201/104 ,  G05D2107/21 ,  G05D2109/254

摘要： A tilt rotor-based linear multi-rotor unmanned aerial vehicle (UAV) structure for crop protection and a control method thereof are provided. The tilt rotor-based linear multi-rotor UAV structure for crop protection includes main lift power structures, tilt power structures, and a main frame structure, where the main frame structure is located in a middle; the main lift power structures are distributed at left and right ends of the main frame structure; and the tilt power structures are symmetrically distributed between the main frame structure and the main lift power structures. A vector power structure is adopted to ensure flexible attitude changes and smoother and more accurate UAV operations, and improve the operation efficiency. Meanwhile, the tilt rotor-based linear multi-rotor UAV structure is adapted to the complex working environment in China's ever-changing terrains.

公开(公告)号：US12006027B2

公开(公告)日：2024-06-11

申请号：US18172370

申请日：2023-02-22

申请人： ideaForge Technology Pvt. Ltd.

发明人： Amey Damjee

IPC分类号： B64C27/51 ,  B64C27/00 ,  B64U30/20 ,  B64U30/297

CPC分类号： B64C27/51 ,  B64C27/001 ,  B64U30/20 ,  B64U30/297 ,  B64C2027/003

摘要： An improved propeller system is disclosed, including at least one resilient component configured with a mounting arrangement of a propeller of the propeller system. The resilient component is made of a resilient material that allows the propeller to tilt about a tethering axis under conditions of differential lift force on blades of the propeller under an advancing condition and a retreating condition. The resilient component includes a pair of cutouts for locating inserts made of a rigid material and positioned with a longitudinal axis of the inserts oriented in radial direction. The orientation of the inserts results in a radially oriented line contact between the propeller and the inserts to ensure that tilting of the propeller is about longitudinal axis of the inserts, defining the tethering axis of the propeller system.

公开(公告)号：US11987350B2

公开(公告)日：2024-05-21

申请号：US17303631

申请日：2021-06-03

申请人： Textron Innovations Inc.

发明人： Steven Ray Ivans ,  Brent Chadwick Ross

IPC分类号： B64C29/00 ,  B64C1/00 ,  B64C5/02 ,  B64C7/02 ,  B64C27/80 ,  B64C39/02 ,  B64C39/04 ,  B64U10/20 ,  B64U30/297 ,  B64U30/20

CPC分类号： B64C29/0033 ,  B64C1/00 ,  B64C5/02 ,  B64C7/02 ,  B64C27/80 ,  B64C39/024 ,  B64C39/04 ,  B64U10/20 ,  B64U30/297 ,  B64U30/20

摘要： A tandem tiltrotor aircraft in which the tiltrotor assemblies are operably coupled at the forward and aft ends of the fuselage of the aircraft is disclosed. The tiltrotor assemblies are capable of rotating between a vertical lift position and a horizontal flight position. The in-line location of the tiltrotor assemblies allow the aircraft to have the vertical take-off and landing capabilities, and, in combination with the at least one wing, can be used in horizontal flight. The aft rotor assembly can assume a horizontal flight position that places the rotor blades forward of a vertical fin of the aircraft. In another embodiment, a winged triple tiltrotor aircraft is disclosed. In another embodiment, a winged quad tiltrotor aircraft is disclosed.

公开(公告)号：US20230406551A1

公开(公告)日：2023-12-21

申请号：US18335045

申请日：2023-06-14

申请人： Aeroseed LLC

发明人： Ricardo Emilio Dao

IPC分类号： B64U10/20 ,  B64U30/12 ,  B64U30/297 ,  B64U40/10 ,  B64U30/21 ,  B64U20/40

CPC分类号： B64U10/20 ,  B64U30/12 ,  B64U30/297 ,  B64U2201/20 ,  B64U30/21 ,  B64U20/40 ,  B64U40/10

摘要： Systems, methods and devices for rotary and fixed wing convertible aircraft with monocopters. A monocopter flying device may include a main body and a wing pivotally coupled to the main body. A wing actuator operably coupled to the wing may be configured to pivot the wing about its longitudinal axis. The flying device may include a propulsion unit pivotally coupled to the main body that includes a motor and a propeller having a hub and radially extending blades. A propulsion unit actuator may be configured to pivot the propulsion unit about an axis non-parallel to the axis of rotation of the propellor. The flying device may include a control system including one or more processors configured to control operation of the devices. The flying devices may connect together to form a flying system having multiple flight modes with varying orientations. The flying system may disaggregate the flying devices in flight.

公开(公告)号：US12084210B1

公开(公告)日：2024-09-10

申请号：US18283233

申请日：2023-04-24

申请人： JIANGSU UNIVERSITY

发明人： Yue Shen ,  Jincheng Chu ,  Zhixiang Shi ,  Yayun Shen ,  Lingfei Zhang ,  Minghui Liu ,  Dewei Wang ,  Yicen Li ,  Zhiwei Sun

IPC分类号： B64U30/297 ,  B64U20/80 ,  G05D1/85 ,  B64U101/40 ,  G05D107/20 ,  G05D109/25

CPC分类号： B64U30/297 ,  B64U20/80 ,  G05D1/857 ,  B64U2101/40 ,  B64U2201/104 ,  G05D2107/21 ,  G05D2109/254

摘要： A tilt rotor-based linear multi-rotor unmanned aerial vehicle (UAV) structure for crop protection and a control method thereof are provided. The tilt rotor-based linear multi-rotor UAV structure for crop protection includes main lift power structures, tilt power structures, and a main frame structure, where the main frame structure is located in a middle; the main lift power structures are distributed at left and right ends of the main frame structure; and the tilt power structures are symmetrically distributed between the main frame structure and the main lift power structures. A vector power structure is adopted to ensure flexible attitude changes and smoother and more accurate UAV operations, and improve the operation efficiency. Meanwhile, the tilt rotor-based linear multi-rotor UAV structure is adapted to the complex working environment in China's ever-changing terrains.