ClassID:

72170

B64C2027/8227 - CPC Classification

Classification description:

Rotorcraft; Rotors peculiar thereto characterised by the provision of an auxiliary rotor or fluid-jet device for counter-balancing lifting rotor torque or changing direction of rotorcraft comprising more than one rotor

Recent Application in this class:
#1
20250289567
2025-09-18

ROTORCRAFT WITH ANTI-TORQUE AIR SYSTEM AND TAIL ROTOR(S)

#2
20250187727
2025-06-12

FLYING VEHICLE HAVING AUXILIARY THRUSTER AND METHOD FOR CONTROLLING AUXILIARY THRUSTER

#3
20240327016
2024-10-03

AIRCRAFT

#4
20230192281
2023-06-22

Rotorcraft

#5
20230101964
2023-03-30

Method for hovering an aircraft with respect to an axis with a controllable pitch angle

#6
20230020198
2023-01-19

Air mobility vehicle

#7
20220315212
2022-10-06

DISTRIBUTED PROPULSION STRUCTURE

#8
20220281613
2022-09-08

Aircraft thermal management system

#9
20220227489
2022-07-21

Systems and methods for yaw-torque reduction on a multi-rotor aircraft

#10
20220171409
2022-06-02

Airframe protection systems for use on rotorcraft

#11
20220169398
2022-06-02

Power management systems for electrically distributed yaw control systems

#12
20220169378
2022-06-02

Tail rotor balancing systems for use on rotorcraft

#13
20220169377
2022-06-02

Rotorcraft quiet modes

#14
20220169376
2022-06-02

Rudders for rotorcraft yaw control systems

#15
20220169375
2022-06-02

Tail rotor configurations for rotorcraft yaw control systems

#16
20220144417
2022-05-12

Vertical take off and landing vehicle

#17
20220119100
2022-04-21

Air mobility vehicle

#18
20220080842
2022-03-17

Rotor break effect by using electric distributed anti-torque generators and opposing electric motor thrust to slow a main rotor

#19
20220073197
2022-03-10

Anti-torque control using fixed blade pitch motors

#20
20210394896
2021-12-23

Electric distributed anti-torque architecture

#21
20210384850
2021-12-09

DISTRIBUTED PROPULSION WITH THERMAL MANAGEMENT

#22
20210309360
2021-10-07

APPARATUS FOR AERIAL TRANSPORTATION OF PAYLOAD

#23
20210163127
2021-06-03

Assembly and method for helicopter anti-torque

#24
20210061455
2021-03-04

Anti-torque systems for rotorcraft

#25
20210009263
2021-01-14

ROTOR SYSTEM

#26
20200387173
2020-12-10

FLIGHT CONTROL METHOD AND DEVICE FOR MULTI-ROTOR UNMANNED AERIAL VEHICLE, AND MULTI-ROTOR UNMANNED AERIAL VEHICLE

#27
20200385112
2020-12-10

Helicopter with an anti-torque system

#28
20200317331
2020-10-08

Anti-torque control using fixed blade pitch motors

#29
20200298970
2020-09-24

Rotating electric distributed anti-torque fin

#30
20200290735
2020-09-17

Electric distributed propulsion with different rotor rotational speeds

#31
20200231277
2020-07-23

Wing tilt actuation system for electric vertical take-off and landing (VTOL) aircraft

#32
20200223542
2020-07-16

Wing tilt actuation system for electric vertical take-off and landing (vtol) aircraft

#33
20200223540
2020-07-16

Modal tailboom flight control systems for compound helicopters

#34
20200198781
2020-06-25

DUCT WITH INCREASED THRUST

#35
20200180755
2020-06-11

HYBRID HELICOPTER INCLUDING INCLINED PROPULSION PROPELLERS

#36
20200156777
2020-05-21

Anti-torque systems for rotorcraft

#37
20200140077
2020-05-07

BIDIRECTIONAL AIRCRAFT ROTOR

#38
20200108919
2020-04-09

Quiet Redundant Rotorcraft

#39
20200094952
2020-03-26

Method and a device for assisting the piloting of a hybrid rotorcraft having a lift rotor and at least one propulsion rotor generating thrust

#40
20200023962
2020-01-23

VERTICAL TAKE-OFF AND LANDING AIRCRAFT

#41
20200023958
2020-01-23

Rotorcraft anti-torque systems and methods therefor

#42
20200017204
2020-01-16

Rotorcraft with canted coaxial rotors

#43
20190382109
2019-12-19

Tail rotor assembly

#44
20190332126
2019-10-31

Propulsor trim prediction for aircraft

#45
20190332125
2019-10-31

Pitch and thrust control for tilt-rotor aircraft

#46
20190332124
2019-10-31

Pitch and thrust control for compound aircraft

#47
20190329879
2019-10-31

Pitch trim prediction for aircraft

#48
20190127059
2019-05-02

Rotorcraft anti-torque system

#49
20190071173
2019-03-07

Variable directional thrust for helicopter tail anti-torque system

#50
20180346135
2018-12-06

Rotor brake effect by using electric distributed anti-torque generators and opposing electric motor thrust to slow a main rotor

#51
20180194462
2018-07-12

Teetering rotor hub system

#52
20180148167
2018-05-31

Control member, a rotary wing aircraft, and a method

#53
20180057158
2018-03-01

Rotorcraft having a rotary wing and an orientable propeller, and a method applied by the rotorcraft

#54
20180044010
2018-02-15

Aircraft tail with cross-flow fan systems

#55
20180002009
2018-01-04

Aircraft propulsion assembly

#56
20170349276
2017-12-07

Electric distributed propulsion anti-torque redundant power and control system

#57
20170349274
2017-12-07

Anti-torque control using matrix of fixed blade pitch motor modules

#58
20170349273
2017-12-07

Variable directional thrust for helicopter tail anti-torque system

#59
20170341740
2017-11-30

Stopped rotor aircraft

#60
20170308101
2017-10-26

AIRCRAFT AND METHOD OF ORIENTING AN AIRFRAME OF AN AIRCRAFT

#61
20170297692
2017-10-19

ROTARY WING AIRCRAFT

#62
20170297690
2017-10-19

Hub separation in dual rotor rotary wing aircraft

#63
20170291702
2017-10-12

Collective to elevator mixing of a rotary wing aircraft

#64
20170283047
2017-10-05

Main rotor rotational speed control for rotorcraft

#65
20170275014
2017-09-28

Rotorcraft rotor and propeller speed

#66
20170274994
2017-09-28

Gearbox for a dual rotor, rotary wing aircraft

#67
20170274987
2017-09-28

Single collective stick for a rotary wing aircraft

#68
20170253329
2017-09-07

Six degree of freedom aerial vehicle

#69
20170233068
2017-08-17

Lift offset control of a rotary wing aircraft

#70
20170233067
2017-08-17

Independent control for upper and lower rotor of a rotary wing aircraft

#71
20170217582
2017-08-03

Dual rotor, rotary wing aircraft

#72
20170210463
2017-07-27

Tip clearance measurement of a rotary wing aircraft

#73
20170183090
2017-06-29

Propeller rotor for a vertical take off and landing aircraft

#74
20170015417
2017-01-19

Multi-Propulsion Design for Unmanned Aerial Systems

#75
20160347448
2016-12-01

Disc-shaped turbo-jet aircraft

#76
20160325830
2016-11-10

Tail rotor failure recovery controller

#77
20160311529
2016-10-27

Modular Electric VTOL Aircraft

#78
20160221675
2016-08-04

Omni-directional thrust vectoring propulsor

#79
20160114896
2016-04-28

Alternative Fuel Source Vehicle

#80
20160046371
2016-02-18

Coaxial counter-rotating rotor system

#81
20150274286
2015-10-01

Asymmetric multirotor helicopter

#82
20130214087
2013-08-22

Coaxial counter-rotating rotor system

#83
20130134256
2013-05-30

Anti-torque device with longitudinal thrust for a rotorcraft

#84
20100065677
2010-03-18

Hybrid helicopter that is fast and has long range

#85
20090216392
2009-08-27

VECTORED THRUSTER AUGMENTED AIRCRAFT

#86
20090159740
2009-06-25

Coaxial rotor aircraft

#87
17701472
2024-01-09

Low-drag tail rotor for a compound aircraft