ClassID:

72110

B64C27/22 - CPC Classification

Classification description:

Rotorcraft; Rotors peculiar thereto Compound rotorcraft, i.e. aircraft using in flight the features of both aeroplane and rotorcraft

Sub-classes:
Recent Application in this class:
#1
20250296679
2025-09-25

AIRCRAFT LIFT ENHANCEMENT SYSTEM

#2
20250083809
2025-03-13

EVTOL AIRCRAFT

#3
20240417069
2024-12-19

Method For Flying VTOL Aircraft With Forward Canted Rotors

#4
20240246664
2024-07-25

Vibration isolation systems for compound helicopters

#5
20240217652
2024-07-04

VTOL BOX-WING MULTIROTOR AERIAL VEHICLE

#6
20240208644
2024-06-27

Method for flying VTOL aircraft with forward canted rotors

#7
20240109651
2024-04-04

AERIAL VEHICLES, COOPERATIVE FLYING SYSTEMS, AND METHODS OF OPERATING THE SAME

#8
20240101252
2024-03-28

VTOL aircraft using fixed forward canted rotors

#9
20240101251
2024-03-28

WING-AND-ROTARY-WING MIXED FOLDING AND UNFOLDING SYSTEM OF FLYING VEHICLE, AND FLYING VEHICLE

#10
20240059419
2024-02-22

Parallel hybrid propulsion system

#11
20240059411
2024-02-22

Enhanced observability uninhabited aerial vehicles and methods of use

#12
20240002044
2024-01-04

FLIGHT UNIT FOR AN AIRCRAFT

#13
20240002043
2024-01-04

TRANSPORT UNIT FOR AN AIRCRAFT, AND AIRCRAFT

#14
20230303271
2023-09-28

Rotorcraft

#15
20230033330
2023-02-02

Hover-capable aircraft and lubrication method for a module of a transmission unit of said aircraft

#16
20230025666
2023-01-26

Convertiplane

#17
20230025366
2023-01-26

Convertiplane

#18
20220340275
2022-10-27

Armed unmanned aerial vehicle and methods of use thereof

#19
20220306304
2022-09-29

Aircraft

#20
20220267016
2022-08-25

Electrically powered rotary-wing aircraft

#21
20220204157
2022-06-30

Hybrid gyrodyne aircraft

#22
20220194615
2022-06-23

AIRCRAFT PROPULSION SYSTEM

#23
20220194569
2022-06-23

AERIAL VEHICLES, COOPERATIVE FLYING SYSTEMS, AND METHODS OF OPERATING THE SAME

#24
20220187849
2022-06-16

Method for piloting a hybrid helicopter having an airframe maintained at constant incidence by regulating a position of at least one mobile tail unit surface

#25
20220185466
2022-06-16

Rotary wing aircraft with an asymmetrical front section

#26
20220185464
2022-06-16

Systems for flight control on a multi-rotor aircraft

#27
20220169371
2022-06-02

AIRCRAFT

#28
20220128013
2022-04-28

Takeoff power boost

#29
20220097834
2022-03-31

Hybrid gyrodyne aircraft

#30
20220081108
2022-03-17

VTOL aircraft using rotors to simulate rigid wing dynamics

#31
20220081107
2022-03-17

Personal quadcopter aircraft

#32
20220055761
2022-02-24

Flying body with a control section having a plurality of operational modes

#33
20220055742
2022-02-24

Hybrid gyrodyne aircraft

#34
20220055741
2022-02-24

Hybrid gyrodyne aircraft

#35
20220043465
2022-02-10

Hybrid gyrodyne aircraft

#36
20220041271
2022-02-10

VTOL aircraft using fixed forward canted rotors to simulate rigid wing dynamics

#37
20210403148
2021-12-30

Vibration isolation systems for compound helicopters

#38
20210380219
2021-12-09

Lift-sharing wing with rotatable trailing edge

#39
20210300540
2021-09-30

Ducted fans having fluidic thrust vectoring

#40
20210300539
2021-09-30

Ducted fans having edgewise flow augmentation

#41
20210300538
2021-09-30

Fluidic roll control systems for use in forward flight

#42
20210300536
2021-09-30

Low observable aircraft having tandem longitudinal lift fans

#43
20210300531
2021-09-30

Fluidic yaw control systems for use in hover

#44
20210291976
2021-09-23

Method of controlling propellers of a hybrid helicopter, and a hybrid helicopter

#45
20210291975
2021-09-23

Method of providing torque protection and/or thrust protection for propellers of a hybrid helicopter, and a hybrid helicopter

#46
20210229838
2021-07-29

System and method for maintaining and configuring rotorcraft

#47
20210163125
2021-06-03

Hybrid rotorcraft having at least one pusher or puller propeller, and an associated piloting method

#48
20210107637
2021-04-15

Universally attachable hinged wing and VLOS aid for mutirotor drones

#49
20210047022
2021-02-18

Tilting wing rotorcrafts and wing rotation systems

#50
20210016876
2021-01-21

Passive rotor alignment in a free-wheeling state

#51
20210011493
2021-01-14

Procedure for maneuvering a hybrid aerodyne of VTOL or STOL

#52
20210010436
2021-01-14

Takeoff power boost

#53
20210001979
2021-01-07

VTOL AIRCRAFT USING FIXED FORWARD CANTED ROTORS TO SIMULATE RIGID WING DYNAMICS

#54
20200398980
2020-12-24

Flight control handle and a hybrid rotorcraft provided with a lift rotor and with at least one propeller propulsive rotor that generates thrust

#55
20200391861
2020-12-17

Duct with optimized horizontal stator shape

#56
20200290734
2020-09-17

Slewing mechanical power transmissions for rotorcraft

#57
20200290718
2020-09-17

UNMANNED AERIAL VEHICLE

#58
20200262549
2020-08-20

Vibration isolation systems for advancing blade concept rotorcraft

#59
20200180754
2020-06-11

FLYING TAXI FOR FACILITATING THE TRANSPORTATION OF PAYLOADS

#60
20200148393
2020-05-14

System and method for maintaining and configuring rotorcraft

#61
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

#62
20200070968
2020-03-05

Safe unmanned aircraft

#63
20200001973
2020-01-02

Chord-wise variable vortex generator

#64
20190382104
2019-12-19

Transformable hovering rotorcraft

#65
20190352014
2019-11-21

Power management between a propulsor and a coaxial rotor of a helicopter

#66
20190332126
2019-10-31

Propulsor trim prediction for aircraft

#67
20190332125
2019-10-31

Pitch and thrust control for tilt-rotor aircraft

#68
20190332124
2019-10-31

Pitch and thrust control for compound aircraft

#69
20190329879
2019-10-31

Pitch trim prediction for aircraft

#70
20190291859
2019-09-26

Multi-rotor aircraft and related systems and methods

#71
20190263513
2019-08-29

YAW-enhancing attitude control system for VTOL fixed-wing aircraft

#72
20190161185
2019-05-30

Wing structure and attachment to frame for unmanned aerial vehicles

#73
20190135420
2019-05-09

Tilt Winged Multi Rotor

#74
20190113403
2019-04-18

Composite airspeed indicator display for compound aircrafts

#75
20190112071
2019-04-18

Composite airspeed indicator display for compound aircrafts

#76
20190084684
2019-03-21

HYBRID AIRCRAFT

#77
20190023393
2019-01-24

Aircraft

#78
20190002093
2019-01-03

AIRCRAFT

#79
20190002075
2019-01-03

Aircraft

#80
20180334241
2018-11-22

Combined fan and motor

#81
20180290736
2018-10-11

VTOL aircraft using rotors to simulate rigid wing aero dynamics

#82
20180281944
2018-10-04

Modular and morphable air vehicle

#83
20180265186
2018-09-20

Vibration Isolation Systems for Advancing Blade Concept Rotorcraft

#84
20180170564
2018-06-21

Unit for generating non-propulsive electrical power

#85
20180099759
2018-04-12

Tiltrotor aircraft having journal bearing mounted pylon assemblies

#86
20180093770
2018-04-05

Unmanned aerial vehicle configuration for extended flight and heat dissipation

#87
20180072413
2018-03-15

Rotating wing assemblies for tailsitter aircraft

#88
20180072411
2018-03-15

Method for automatic piloting of a rotary wing aircraft having at least one thruster propeller, associated automatic autopilot device, and aircraft

#89
20180065737
2018-03-08

PERSONAL AIRCRAFT

#90
20170320564
2017-11-09

Air wheel rotor, a gyro stabilized aircraft and a wind-driven power generator using the air wheel rotor, and a stationary launching device

#91
20170305526
2017-10-26

Drone having at least three lift and propulsion rotors

#92
20170297693
2017-10-19

Feed-forward compensation for gyroscopic loads in a coaxial rotor

#93
20170283052
2017-10-05

Rotating wing assemblies for tailsitter aircraft

#94
20170233074
2017-08-17

Multi-directional elastomeric dampened ball joint assembly

#95
20170210486
2017-07-27

Light adjustment control for cameras of an aerial vehicle

#96
20170210469
2017-07-27

Modular and morphable air vehicle

#97
20170158325
2017-06-08

Fixed structure type vertical take-off and landing aircraft based on dual flying control systems and control method therefor

#98
20170113793
2017-04-27

Compound aircraft having an additional anti-torque device

#99
20170096221
2017-04-06

Modular and morphable air vehicle

#100
20170008622
2017-01-12

Aircraft

#101
20160375997
2016-12-29

Unmanned aerial vehicle with a tri-wing configuration

#102
20160311530
2016-10-27

Aircraft with a plurality of engines driving a common driveshaft

#103
20160229530
2016-08-11

Unmanned aerial vehicle protective frame configuration

#104
20160208864
2016-07-21

Multi-plate clutch

#105
20160167775
2016-06-16

High-altitude drone

#106
20160129998
2016-05-12

Unmanned aerial vehicle configuration for extended flight

#107
20160052626
2016-02-25

Hybrid gyrodyne aircraft employing a managed autorotation flight control system

#108
20160031554
2016-02-04

CONTROL SYSTEM FOR AN AIRCRAFT

#109
20160023754
2016-01-28

Vertical take-off aircraft

#110
20160023753
2016-01-28

Vehicle with asymmetric nacelle configuration

#111
20150314865
2015-11-05

CONVERTIBLE AIRCRAFT PROVIDED WITH TWO DUCTED ROTORS AT THE WING TIPS AND WITH A HORIZONTAL FAN IN THE FUSELAGE

#112
20150284075
2015-10-08

Vertical take-off and landing aircraft with variable wing geometry

#113
20150274288
2015-10-01

COMPLIANT WING CONTROL FOR AIRCRAFT

#114
20150266571
2015-09-24

Aerodynamically efficient lightweight vertical take-off and landing aircraft with pivoting rotors and stowing rotor blades

#115
20150217613
2015-08-06

Modular and morphable air vehicle

#116
20150128597
2015-05-14

Multiple motor gas turbine engine system with auxiliary gas utilization

#117
20150122953
2015-05-07

Drive link for tiltrotor rotor system

#118
20150048214
2015-02-19

Method and apparatus of connecting a fixed drive system to a rotating drive system for a tiltrotor aircraft

#119
20140367509
2014-12-18

AIRCRAFT WITH FREEWHEELING ENGINE

#120
20140353420
2014-12-04

Rotary wing rotorcraft having a plurality of propellers

#121
20140353419
2014-12-04

Rotary wing rotorcraft having a plurality of propellers

#122
20140319265
2014-10-30

Method of automatically triggering an emergency buoyancy system for a hybrid helicopter

#123
20140263854
2014-09-18

Tiltrotor aircraft with inboard wing mounted fixed engine arrangement

#124
20140154084
2014-06-05

Non-uniform blade distribution for rotary wing aircraft

#125
20130334359
2013-12-19

Aircraft wing extension and nozzle system

#126
20130214086
2013-08-22

Personal aircraft

#127
20130181087
2013-07-18

Clutch system for rotary-wing aircraft with secondary thrust system

#128
20130175385
2013-07-11

Method of automatically controlling a rotary wing aircraft having at least one propulsion propeller, an autopilot device, and an aircraft

#129
20130153706
2013-06-20

Life-saving vehicle

#130
20130099065
2013-04-25

TILT-WING AIRCRAFT

#131
20130079956
2013-03-28

Method of regulating the propulsive speed of a hybrid helicopter

#132
20120234968
2012-09-20

Aircraft with freewheeling engine

#133
20120156050
2012-06-21

Detachable rotor blade fairing apparatus and method

#134
20120119017
2012-05-17

Aircraft wing extension and nozzle system

#135
20120091257
2012-04-19

Air vehicle

#136
20120034080
2012-02-09

Actuation mechanism for a convertible gas turbine propulsion system

#137
20120025012
2012-02-02

Rotary wing vehicle

#138
20120012692
2012-01-19

Personal aircraft

#139
20110315806
2011-12-29

Modular and morphable air vehicle

#140
20110139924
2011-06-16

TAIL BOOM

#141
20110006166
2011-01-13

Rotary wing vehicle

#142
20100310371
2010-12-09

Drive control and regulation method and system for a hybrid helicopter

#143
20100308178
2010-12-09

Variable ratio crank for a manual flight control linkage of a rotary wing aircraft

#144
20100308157
2010-12-09

Mechanical device for combining first and second control orders, and an aircraft provided with such a device

#145
20100308154
2010-12-09

Method of controlling a hybrid helicopter in yaw, and a hybrid helicopter provided with a yaw control device suitable for implementing said method

#146
20100258671
2010-10-14

Aircraft having helicopter rotor and front mounted propeller

#147
20100133375
2010-06-03

Hydraulic valve, a hybrid helicopter provided with such a hydraulic valve, and a method implemented by the hydraulic valve

#148
20100044498
2010-02-25

Variable speed transmission for a rotary wing aircraft

#149
20090140182
2009-06-04

Actuation mechanism for a convertible gas turbine propulsion system

#150
20090140095
2009-06-04

Electric powered rotary-wing aircraft

#151
20080294305
2008-11-27

Rotorcraft control system

#152
20080237393
2008-10-02

Aircraft having helicopter rotor and front mounted propeller

#153
20080173752
2008-07-24

Variable speed transmission for a rotary wing aircraft

#154
20070095973
2007-05-03

Aircraft having a helicopter rotor and an inclined front mounted propeller

#155
20060269414
2006-11-30

Variable speed transmission for a rotary wing aircraft

#156
20060269413
2006-11-30

Rotor drive and control system for a high speed rotary wing aircraft

#157
20060056971
2006-03-16

Swashplate and pitch link arrangement for a coaxial counter rotating rotor system

#158
20060011777
2006-01-19

Rotary wing aircraft having a non-rotating structural backbone and a rotor blade pitch controller

#159
19004227
2026-02-24

VTOL aircraft using fixed forward canted rotors

#160
18895111
2025-12-30

Aerodynamic rotor blade configurations

#161
18537573
2026-01-27

Propeller blade configuration

#162
17948545
2024-10-22

Aerodynamic rotor blade configurations

#163
17891534
2023-06-27

Parallel hybrid propulsion system

#164
17354707
2023-01-17

Apparatus, system and method for a convertible thruster for a compound aircraft

#165
16833623
2021-07-27

Low observable aircraft having a unitary lift fan

#166
16126062
2019-05-07

Aircraft control system based on sparse set of simulation data

#167
15838790
2018-10-16

Aircraft control system based on sparse set of simulation data

#168
14734823
2017-09-19

Multirotor aircraft with enhanced yaw control

#169
13317750
2015-09-22

Rotor blade subsystems attachment

#170
13199720
2015-09-01

Tip jet attachment apparatus and method