B64C2027/8245 - CPC Classification Index

ClassID:

72172 ⎘

B64C2027/8245 - 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 using air jets

Recent Application in this class:

20250236386

2025-07-24

ROTORCRAFT WITH POWERPLANT EXHAUST SOUND ATTENUATION

20220221864

2022-07-14

System and a method for controlling rotorcraft rotors

20200331600

2020-10-22

Anti-torque and propulsion system for rotorcraft

20200198781

2020-06-25

DUCT WITH INCREASED THRUST

20190300166

2019-10-03

Rotorcraft with counter-rotating rotor blades capable of simultaneously generating upward lift and forward thrust

20180281936

2018-10-04

Helicopter with wing augmented lift

20180273167

2018-09-27

Rotorcraft anti-torque and directional control using a centrifugal blower

20180057157

2018-03-01

Tilting ducted fan aircraft generating a pitch control moment

20180044009

2018-02-15

Rotorcraft variable thrust cross-flow fan systems

#10

20180022450

2018-01-25

Aviation device comprising a bearing structure and a rotating member equipped with fixing means which make it possible to fix at least one blade

#11

20170267341

2017-09-21

Directional control system and method of providing directional control

#12

20160272315

2016-09-22

Compound wing vertical takeoff and landing small unmanned aircraft system

#13

20160272311

2016-09-22

Deflection cone in a reaction drive helicopter

#14

20150191245

2015-07-09

Helicopter with cross-flow fan

#15

20130168490

2013-07-04

Rotorcraft counter-torque control assembly and method

#16

20130119186

2013-05-16

Torque compensation for a helicopter

#17

20120318911

2012-12-20

Anti-torque nozzle system with internal sleeve valve for a rotorcraft

#18

20120318910

2012-12-20

Propulsive anti-torque nozzle system with external rotating sleeve for a rotorcraft

#19

20120312916

2012-12-13

Propulsive anti-torque nozzle system with rotating thrust director for a rotorcraft

#20

20120280079

2012-11-08

Airfoil shaped tail boom

#21

20120256041

2012-10-11

Aircraft stabilizer system and methods of using the same

#22

20120187237

2012-07-26

Directional control for a helicopter

#23

20120156050

2012-06-21

Detachable rotor blade fairing apparatus and method

#24

20120119017

2012-05-17

Aircraft wing extension and nozzle system

#25

20120104157

2012-05-03

Rotor driven auxiliary power apparatus and method

#26

20120104156

2012-05-03

Use of auxiliary rudders for yaw control at low speed

#27

20120104155

2012-05-03

Tail jet apparatus and method for low speed yaw control of a rotorcraft

#28

20120104154

2012-05-03

Tail fan apparatus and method for low speed yaw control of a rotorcraft

#29

20120104153

2012-05-03

GYROPLANE PREROTATION BY COMPRESSED AIR

#30

20110139924

2011-06-16

TAIL BOOM

#31

20110121128

2011-05-26

Helicopter auxiliary anti-torque system

#32

20100019079

2010-01-28

THRUST GENERATOR FOR A ROTARY WING AIRCRAFT

#33

20090277991

2009-11-12

Helicopter having means for the aerodynamic support of the torque equalization

#34

20090189011

2009-07-30

Thrust Vectoring Exhaust Nozzle System for Helicopters

#35

20090101753

2009-04-23

Device for compensation of the Tail rotor in a helicopter

#36

20090008498

2009-01-08

Aircraft stabilizer system and methods of using the same

#37

20080093500

2008-04-24

Propulsive anti-torque system for rotorcraft

#38

20070295857

2007-12-27

Emergency Device

#39

18220232

2024-12-10

Directional tail thrust systems for rotorcraft

#40

14618072

2017-04-04

Use of auxiliary rudders for yaw control at low speed

#41

13317750

2015-09-22

Rotor blade subsystems attachment

#42

13199720

2015-09-01

Tip jet attachment apparatus and method