ClassID:

145288

F05D2220/329 - CPC Classification

Classification description:

Application in turbines in gas turbines in helicopters

Recent Application in this class:
#1
20260043362
2026-02-12

AUTOMATED CONTROL OF TURBINE ENGINES OF A ROTARY-WING AIRCRAFT DURING A FAILURE ON A TURBINE ENGINE

#2
20260043361
2026-02-12

METHOD FOR MANAGING THE EXITING OF A SPECIFIC-CONSUMPTION MODE OF AN AIRCRAFT TURBINE ENGINE

#3
20250215824
2025-07-03

IMPROVED PROPULSION ASSEMBLY FOR MULTI-ENGINE HYBRID AIRCRAFT

#4
20250154894
2025-05-15

PROPULSION SYSTEM COMPRISING A HYDROGEN-BURNING GAS TURBINE ENGINE

#5
20250043737
2025-02-06

Heating Methods to Facilitate Engine In-Flight Restarts

#6
20250027426
2025-01-23

CONTROL DEVICE FOR CONTROLLING AN AIRFLOW GUIDING SYSTEM, IN PARTICULAR IN AN AIRCRAFT TURBINE ENGINE

#7
20240125275
2024-04-18

METHOD AND AIRCRAFT PROVIDED WITH AT LEAST ONE COMBUSTION ENGINE AND A DRIVE SYSTEM WITH AT LEAST TWO ELECTRIC MACHINES

#8
20240084742
2024-03-14

Pulse modulation technique for gas turbine engines

#9
20240052783
2024-02-15

Ignition method and device

#10
20240025552
2024-01-25

Aircraft comprising at least two turboshaft engines and device configured to be connected to one of the turboshaft engines and method for controlling such an aircraft

#11
20230417156
2023-12-28

Device for controlling an airflow guiding system, in particular in an aircraft turbine engine

#12
20230243310
2023-08-03

GAS TURBINE ENGINE WITH CLUTCH SYSTEM BETWEEN LOW-PRESSURE COMPRESSOR AND LOW-PRESSURE TURBINE

#13
20230220800
2023-07-13

Recovered-cycle aircraft turbomachine

#14
20230220779
2023-07-13

Recovered-cycle aircraft turbomachine

#15
20230212981
2023-07-06

Crossover cooling flow for multi-engine systems

#16
20230211876
2023-07-06

Reduced-engine operation technique for rotorcraft

#17
20230193779
2023-06-22

Method for quickly stopping the rotor of a helicopter after landing

#18
20230175444
2023-06-08

System and method of operating multi-engine system

#19
20230175436
2023-06-08

System and method of operating multi-engine system

#20
20230113130
2023-04-13

Method and system for governing an engine at low power

#21
20230075494
2023-03-09

Turboshaft gas turbine engine

#22
20230064177
2023-03-02

Twin-engine system with electric drive

#23
20230036129
2023-02-02

Aerial vehicle with hybrid drive and rotor unit including rotor shafts coupled by inclined synchro gear wheels

#24
20230034946
2023-02-02

Multi-engine system and power transfer between engines thereof

#25
20230013754
2023-01-19

Power management methods for multi engine rotorcraft

#26
20220356841
2022-11-10

Aircraft air intake systems employing gills

#27
20220220979
2022-07-14

Method for configuring a digital filter for attenuating a frequency associated with a torsion mode of a power transmission line of a turbine engine

#28
20220213838
2022-07-07

Air system switching system to allow aero-engines to operate in standby mode

#29
20220195875
2022-06-23

Blade component, method for manufacture of same, and gas turbine

#30
20220135239
2022-05-05

METHOD FOR CONTROLLING A POWER PLANT OF A ROTORCRAFT COMPRISING AT LEAST TWO TURBOSHAFT ENGINES

#31
20220106915
2022-04-07

METHOD AND SYSTEM FOR OPERATING A GAS TURBINE ENGINE TO AVOID RESTRICTED ENGINE SPEEDS

#32
20220106913
2022-04-07

Method and system for governing an engine at low power

#33
20220106908
2022-04-07

Method for regulating a turbomachine comprising a temporary power-increasing device

#34
20220106892
2022-04-07

Gas turbine engine probe cooling

#35
20220082027
2022-03-17

Method for monitoring the operating state of a system for positioning variable-geometry members of a turbomachine

#36
20220048640
2022-02-17

Multistage infrared suppression exhaust system

#37
20220041294
2022-02-10

VEHICLE PROVIDED, AT THE INTAKE, WITH AN AIR FILTER AND CORRESPONDING AIR FILTER

#38
20220024574
2022-01-27

High speed rotorcraft propulsion configuration

#39
20220024568
2022-01-27

Architecture for a propulsion system of a helicopter including a hybrid turboshaft engine and a system for reactivating said hybrid turboshaft engine

#40
20210362869
2021-11-25

Aircraft power architecture

#41
20210362843
2021-11-25

Turbine engine secondary ejector system

#42
20210355870
2021-11-18

Twin-engine system with electric drive

#43
20210340956
2021-11-04

Systems and methods for optimal speed protection for power turbine governing

#44
20210324795
2021-10-21

Axial inertial particle separator for turbine engine

#45
20210324761
2021-10-21

Systems and methods for internal spline lubrication

#46
20210276703
2021-09-09

Compound helicopters having auxiliary propulsive systems

#47
20210262400
2021-08-26

Speed limiting for power turbine governing and protection in a turboshaft engine

#48
20210246827
2021-08-12

Asymmetric propulsion system with heat recovery

#49
20210231058
2021-07-29

Gas turbine engine with clutch system between low-pressure compressor and low-pressure turbine

#50
20210164398
2021-06-03

Crossover cooling flow for multi-engine systems

#51
20210108578
2021-04-15

Method for checking the maximum available power of a turbine engine of an aircraft equipped with two turbine engines

#52
20210102491
2021-04-08

Device for temporarily increasing turbomachine power

#53
20210078716
2021-03-18

Air intake unit for an aircraft engine

#54
20210070462
2021-03-11

Rotorcraft engine inlet configuration to optimize performance in both hover and high speed flight

#55
20210061451
2021-03-04

Power management systems for multi engine rotorcraft

#56
20210054782
2021-02-25

POWER SYSTEM FOR ROTARY WING AIRCRAFT

#57
20200391873
2020-12-17

System and method for operating a multi-engine rotorcraft for ice accretion shedding

#58
20200362753
2020-11-19

System and method for operating multi-engine rotorcraft

#59
20200325791
2020-10-15

Energy recovery modules, generator arrangements, and methods of recovering energy in generator arrangements

#60
20200309066
2020-10-01

Compound helicopters having hybrid propulsion engines

#61
20200309038
2020-10-01

Air system switching system to allow aero-engines to operate in standby mode

#62
20200307779
2020-10-01

Compound helicopters having auxiliary propulsive systems

#63
20200285232
2020-09-10

Reverse tactile cue for rotorcraft rotor overspeed protection

#64
20200284206
2020-09-10

Method and system for operating an engine in a multi-engine aircraft

#65
20200200092
2020-06-25

Accessory box for a turbomachine

#66
20200182160
2020-06-11

Device for automatically regulating aircraft power plant gas generator and free turbine speeds as a function of heating, electricity generation, noise emission, and fuel consumption

#67
20200158021
2020-05-21

Turbine engine with starter motor with reversible ventilation, and associated cooling method

#68
20200131909
2020-04-30

Turbine rotor locking assembly and method

#69
20200070994
2020-03-05

Engine Exhaust Suppressor

#70
20200062382
2020-02-27

High speed rotorcraft propulsion configuration

#71
20200049025
2020-02-13

Multi-engine system and method

#72
20200047876
2020-02-13

Turboshaft gas turbine engine

#73
20200040742
2020-02-06

Composite vane with metal reinforcement, and its method of manufacture

#74
20190390564
2019-12-26

Real time engine inlet barrier filter condition monitor

#75
20190383218
2019-12-19

Crossover cooling flow for multi-engine systems

#76
20190352001
2019-11-21

PROPULSION SYSTEM FOR A SINGLE-ENGINE HELICOPTER

#77
20190338754
2019-11-07

Systems and methods for optimal speed protection for power turbine governing

#78
20190309689
2019-10-10

Systems and methods for power turbine governing

#79
20190283893
2019-09-19

Moveable aircraft cowl and bypass section

#80
20190226399
2019-07-25

Method of increasing the safety of a power plant, and a power plant suitable for implementing the method

#81
20190224607
2019-07-25

Vehicle provided, at the intake, with an air filter provided with a heating device

#82
20190218969
2019-07-18

AIRCRAFT TURBINE ENGINE WITH EPICYCLIC REDUCTION GEAR HAVING A VARIABLE REDUCTION RATIO

#83
20190193842
2019-06-27

Rotor support device, rotor, gas turbine engine, and aircraft

#84
20190112981
2019-04-18

Control method for controlling an air intake system which supplies air to an engine of a vehicle

#85
20190093558
2019-03-28

Integrated inlet particle separator (IPS) blower/engine starter

#86
20190084688
2019-03-21

Rotorcraft engine inlet configuration to optimize performance in both hover and high speed flight

#87
20190078458
2019-03-14

Active clearance control system and manifold for gas turbine engine

#88
20190032573
2019-01-31

Partially redundant electronic control system

#89
20180370620
2018-12-27

Regulation system for controlling the vibratory behavior and/or the twisting stability of a drivetrain, a rotorcraft fitted with such a regulation system, and an associated regulation method

#90
20180354635
2018-12-13

Propulsion system for an aircraft

#91
20180334964
2018-11-22

Support assembly for a propeller shaft

#92
20180320591
2018-11-08

Combined two engine cycle with at least one recuperated cycle engine for rotor drive

#93
20180305035
2018-10-25

Air intake unit for an aircraft engine and provided with an air filter and with an air filter bypass duct

#94
20180298827
2018-10-18

Turboshaft engine for an aircraft equipped with an automatically-activated centraliser

#95
20180298818
2018-10-18

Passive internal ice protection systems for engine inlets

#96
20180291839
2018-10-11

EXHAUST COOLING ARRANGEMENT

#97
20180274441
2018-09-27

System for recovering exhaust gas energy

#98
20180266278
2018-09-20

Particle-trapping device for a turbomachine and turbomachine with such a device

#99
20180246510
2018-08-30

Reverse tactile cue for rotorcraft rotor overspeed protection

#100
20180244396
2018-08-30

Drive system arrangement for rotorcraft

#101
20180238235
2018-08-23

Rotorcraft having increased altitude density ceiling

#102
20180223739
2018-08-09

Turbine rotor with low over-speed requirements

#103
20180201386
2018-07-19

Control system for rotorcraft in-flight engine restarting

#104
20180187604
2018-07-05

Assistance device for a free-turbine engine of an aircraft having at least two free-turbine engines

#105
20180178908
2018-06-28

Device for regulating the speed of rotation of a gas generator shaft of a rotorcraft turboshaft engine, a rotorcraft provided with such a device, and an associated method of regulation

#106
20180135535
2018-05-17

Dynamic flight command cross-feed for rotor speed droop reduction

#107
20180119571
2018-05-03

Turboshaft engine embeddable in a reduction gearbox

#108
20180080381
2018-03-22

Inlet filter for gas turbine engines using disposable surface adhesive

#109
20180080380
2018-03-22

Inlet guide vane control for aircraft single engine operation

#110
20180073441
2018-03-15

Load estimation for a twin-engine helicopter

#111
20180073437
2018-03-15

Systems and methods for starting an engine

#112
20180073429
2018-03-15

Reverse flow gas turbine engine with offset RGB

#113
20180058264
2018-03-01

Gas turbine exhaust assembly

#114
20180023482
2018-01-25

Turbine shaft power take-off

#115
20180023481
2018-01-25

Multi-spool gas turbine engine architecture

#116
20180023480
2018-01-25

Multi-spool gas turbine engine architecture

#117
20180023471
2018-01-25

Gas turbine engine shaft architecture and associated method of disassembly

#118
20180023470
2018-01-25

Gear train architecture for a multi-spool gas turbine engine

#119
20180010479
2018-01-11

Turbine arrangement

#120
20170361943
2017-12-21

Air supply plenum

#121
20170341771
2017-11-30

Method and a device for assisting the piloting of an aircraft, and an aircraft

#122
20170334569
2017-11-23

Device and method for controlling an auxiliary engine suitable for supplying thrust power to the rotor of a helicopter

#123
20170327241
2017-11-16

Power plant management system for dual engine helicopter in single engine operation mode

#124
20170305541
2017-10-26

Architecture for a propulsion system of a helicopter including a hybrid turboshaft engine and a system for reactivating said hybrid turboshaft engine

#125
20170297694
2017-10-19

ROTOR SPEED MANAGEMENT

#126
20170297690
2017-10-19

Hub separation in dual rotor rotary wing aircraft

#127
20170291702
2017-10-12

Collective to elevator mixing of a rotary wing aircraft

#128
20170283047
2017-10-05

Main rotor rotational speed control for rotorcraft

#129
20170275014
2017-09-28

Rotorcraft rotor and propeller speed

#130
20170274994
2017-09-28

Gearbox for a dual rotor, rotary wing aircraft

#131
20170274987
2017-09-28

Single collective stick for a rotary wing aircraft

#132
20170247114
2017-08-31

Hybrid propulsion system for a multi-engine aircraft

#133
20170241347
2017-08-24

Removable pack for reactivating a turboshaft engine, architecture for a multi-engine system for propelling a helicopter, provided with such a pack, and corresponding helicopter

#134
20170233068
2017-08-17

Lift offset control of a rotary wing aircraft

#135
20170233067
2017-08-17

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

#136
20170225794
2017-08-10

Hybrid contingency power drive system

#137
20170218847
2017-08-03

Device and method for testing the integrity of a helicopter turbine engine rapid restart system

#138
20170217582
2017-08-03

Dual rotor, rotary wing aircraft

#139
20170211483
2017-07-27

Pneumatic device for rapidly reactivating a turbine engine, architecture for a propulsion system of a multi-engine helicopter provided with such a device, and corresponding helicopter

#140
20170210463
2017-07-27

Tip clearance measurement of a rotary wing aircraft

#141
20170184032
2017-06-29

Assistance device for an aircraft turbine engine with a free turbine

#142
20170167383
2017-06-15

Gearbox oil cooling assembly

#143
20170152055
2017-06-01

Architecture of a multiple-engine helicopter propulsion system, and corresponding helicopter

#144
20170145919
2017-05-25

Passive internal ice protection systems for engine inlets

#145
20170122221
2017-05-04

Turboshaft engine, twin-engine helicopter equipped with such a turboshaft engine, and method for optimising the zero-power super-idle speed of such a twin-engine helicopter

#146
20170121033
2017-05-04

Convertible engine exhaust for rotocraft

#147
20170114723
2017-04-27

DEVICE FOR ASSISTING A SOLID PROPELLANT PROPULSION SYSTEM OF A SINGLE-ENGINE HELICOPTER, SINGLE-ENGINE HELICOPTER COMPRISING SUCH A DEVICE

#148
20170101938
2017-04-13

Method for detecting a failure of a first turbine engine of a twin-engine helicopter and for operating the second turbine engine, and corresponding device

#149
20170101936
2017-04-13

Turboshaft engine comprising a controlled mechanical coupling device, helicopter equipped with such a turboshaft engine, and method for optimising the zero-power super-idle speed of such a helicopter

#150
20170096233
2017-04-06

Architecture of a multi-engine helicopter propulsion system and corresponding helicopter

#151
20170066541
2017-03-09

Method of regulating a three-engined power plant for a rotary wing aircraft

#152
20170058781
2017-03-02

Turbine inter-spool energy transfer system

#153
20170016399
2017-01-19

Method for assisting a turboshaft engine in standby of a multiple-engine helicopter, and architecture of a propulsion system of a helicopter comprising at least one turboshaft engine that can be in standby

#154
20170016398
2017-01-19

Hydraulic device for emergency starting a turbine engine, propulsion system of a multi-engine helicopter provided with one such device, and corresponding helicopter

#155
20170015411
2017-01-19

DRIVE CHAIN FOR A HELICOPTER INCORPORATING A PYROTECHNIC ASSISTANCE DRIVE MODULE AND HELICOPTER COMPRISING THE SAME

#156
20170009662
2017-01-12

Device for automatically regulating aircraft power plant gas generator and free turbine speeds as a function of heating, electricity generation, noise emission, and fuel consumption

#157
20160376017
2016-12-29

Method of regulating a three-engined power plant for a rotary wing aircraft

#158
20160348583
2016-12-01

Method and device for supplying a lubricant

#159
20160333782
2016-11-17

Multiple turboshaft engine control method and system for helicopters

#160
20160332740
2016-11-17

Power limiting generator control unit (GCU)

#161
20160312707
2016-10-27

Device for draining liquids for an aircraft engine

#162
20160311548
2016-10-27

Method for automatically controlling the operating speed of a helicopter turboshaft engine, corresponding control device and helicopter provided with such a device

#163
20160311547
2016-10-27

Method and a device for stopping a turboshaft engine in nominal operation

#164
20160298486
2016-10-13

Turbine engine and control method

#165
20160281537
2016-09-29

Oil scoop and shaft with axially-oriented hole

#166
20160273379
2016-09-22

Gas turbine engine health determination

#167
20160265381
2016-09-15

Integrated gas turbine engine support and sensor

#168
20160245109
2016-08-25

Erosion resistant coating for air seal

#169
20160237917
2016-08-18

METHOD FOR OPTIMISING THE SPECIFIC CONSUMPTION OF A TWIN HELICOPTER

#170
20160167799
2016-06-16

Method of managing a power demand for the operation of a pilotless aircraft equipped with an internal combustion engine

#171
20160146116
2016-05-26

Method for optimizing the control of a free turbine power package for an aircraft, and control for implementing same

#172
20160144971
2016-05-26

Assisting the piloting of a multi-engined rotorcraft in an engine-failure situation, in the context of a main rotor of the rotorcraft being driven at variable speed

#173
20160131028
2016-05-12

GAS TURBINE

#174
20160107759
2016-04-21

Method of driving rotation of a rotorcraft rotor by anticipating torque needs between two rotary speed setpoints of the rotor

#175
20160090918
2016-03-31

Method of stopping a rotorcraft engine in overspeed, and a system and a rotorcraft associated therewith

#176
20160084107
2016-03-24

Turbomachine comprising a casing wear indicator

#177
20160075439
2016-03-17

Aircraft with an air intake for an air breathing propulsion engine

#178
20160069277
2016-03-10

Turboshaft engine control

#179
20160061109
2016-03-03

Method of increasing the safety of a power plant, and a power plant suitable for implementing the method

#180
20160032829
2016-02-04

Method and device for optimizing the utilization of an engine

#181
20160032748
2016-02-04

Guide blade for a gas turbine

#182
20160025011
2016-01-28

Series battery start controller

#183
20160003144
2016-01-07

Combined two engine cycle with at least one recuperated cycle engine for rotor drive

#184
20150367951
2015-12-24

Monitor system for monitoring the starting of a rotary wing aircraft, an aircraft, and a method using the system

#185
20150367945
2015-12-24

Aircraft with an engine having a by-pass air inlet opening and a bleed air outlet

#186
20150322864
2015-11-12

Starting of aircraft engine

#187
20150284074
2015-10-08

Modular power plant and an aircraft provided with a lift rotor

#188
20150192526
2015-07-09

Automated magnetic particle and fluorescent penetrant defect detection system

#189
20150191250
2015-07-09

In-flight mechanically assisted turbine engine starting system

#190
20150176488
2015-06-25

Power plant including a secondary engine for compensating for losses of power from main engines in a rotary wing aircraft

#191
20150166194
2015-06-18

Helicopter engine air intake with increased bypass flow

#192
20150144201
2015-05-28

Engine inlet duct installation

#193
20150122944
2015-05-07

Method and architecture for the optimized transfer of power between an auxiliary power motor and the main engines of a helicopter

#194
20150113996
2015-04-30

Cascaded multi-variable control system for a turboshaft engine

#195
20150086334
2015-03-26

Centrifugal compressor provided with a marker for measuring wear and a method of monitoring wear using said marker

#196
20150081193
2015-03-19

Adaptive remaining useful life balancing control system and method for multi-engine systems

#197
20150028153
2015-01-29

Regulated three-engined power plant for a rotary wing aircraft

#198
20150006057
2015-01-01

Method and a device for protecting an overspeeding rotorcraft engine

#199
20140379177
2014-12-25

Torque estimation apparatus for vertical take-off and landing aircraft, vertical take-off and landing aircraft, torque estimation program for vertical take-off and landing aircraft, and torque estimation method for vertical take-off and landing aircraft

#200
20140250909
2014-09-11

Series battery start controller

#201
20140229036
2014-08-14

Method of driving rotation of a rotorcraft rotor by anticipating torque needs between two rotary speed setpoints of the rotor

#202
20140200844
2014-07-17

Method of optimizing the performance of an aircraft, a device, and an aircraft

#203
20140123663
2014-05-08

Rotor resonance disturbance rejection controller

#204
20140112756
2014-04-24

Two-spool design for a turboshaft engine with a high-pressure compressor connected to a low-pressure turbine

#205
20140103884
2014-04-17

Resonant mode damping system and method

#206
20140020396
2014-01-23

Method of automatically regulating aircraft power plant gas generator and free turbine speeds as a function of heating, electricity generation, noise emission, and fuel consumption

#207
20130291551
2013-11-07

Method for starting a turbomachine

#208
20130291549
2013-11-07

Device and a method of regulating a power plant including at least one turbine engine, and an aircraft

#209
20130284150
2013-10-31

Fuel feed network for a rotorcraft engine, the network including means for priming a pump for sucking fuel from a feed tank

#210
20130247577
2013-09-26

Control method for an overspeed safety system, and an associated system and aircraft

#211
20130234506
2013-09-12

Method for controlling the generation of electricity applied to an aircraft gas turbine, and device implementing such a method

#212
20130233977
2013-09-12

Engine starting system for rotorcraft in flight

#213
20130205745
2013-08-15

Lubricating device having a bypass valve

#214
20130199204
2013-08-08

Method and a device for performing a check of the health of a turbine engine of an aircraft provided with at least one turbine engine

#215
20130199198
2013-08-08

Method of automatically regulating a rotorcraft power plant, a rotorcraft power plant, and a rotorcraft

#216
20130166169
2013-06-27

Dual gain digital engine control

#217
20130161444
2013-06-27

HIGH EFFICIENCY HUB FOR PRESSURE JET HELICOPTERS

#218
20130151112
2013-06-13

Method for optimizing the control of a free turbine power package for an aircraft, and control for implementing same

#219
20130139518
2013-06-06

Multiple turboshaft engine control method and system for helicopters

#220
20130092798
2013-04-18

Filter systems for air intakes of aircraft engines and related methods

#221
20130089409
2013-04-11

Non-lubricated architecture for a turboshaft engine

#222
20130086919
2013-04-11

Starting of aircraft engine

#223
20130000770
2013-01-03

Gas-guiding pipe comprising a noise-attenuating covering with variable porosity

#224
20120321460
2012-12-20

Vertical shaft turbomachine

#225
20120304619
2012-12-06

ENGINE FOR THRUST OR SHAFT OUTPUT AND CORRESPONDING OPERATING METHOD

#226
20120277969
2012-11-01

Passing from a non-synchronized state between an engine and a rotor to a synchronized state

#227
20120257954
2012-10-11

METHOD FOR COOLING TURBINE STATORS AND COOLING SYSTEM FOR IMPLEMENTING SAID METHOD

#228
20120233988
2012-09-20

Aircraft capable of hovering having an exhaust duct with thermoelectric conversion circuit

#229
20120159965
2012-06-28

Multi spool gas turbine system

#230
20120111417
2012-05-10

Offset ambient level fuel feed system

#231
20120109426
2012-05-03

Aircraft power plant, an aircraft, and a method of piloting said aircraft

#232
20120063879
2012-03-15

ENERGY EFFICIENT IPS BLOWER ASSEMBLY

#233
20120053811
2012-03-01

Method and a device for optimizing the utilization of an engine

#234
20120034080
2012-02-09

Actuation mechanism for a convertible gas turbine propulsion system

#235
20120023967
2012-02-02

AUXILIARY POWER UNIT WITH HOT SECTION FIRE ENCLOSURE ARRANGEMENT

#236
20110319008
2011-12-29

Method of avoiding a grid clogging, a grid and an air intake implementing such a method

#237
20110284318
2011-11-24

Soundproof exhaust pipe for a turbine engine

#238
20110280728
2011-11-17

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