of the epicyclical, planetary or differential type

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CPC
F05D2260/40311

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FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F05Engines, pumps F05DINDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS F05D2260/00Function

Current Industry

F05D2260/40311of the epicyclical, planetary or differential type

Industries

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Patents Grantslast 30 patents

Information Patent Grant
Gearbox assembly with lubricant extraction volume ratio
- Patent number 12,320,418
- Issue date Jun 3, 2025
- General Electric Company
- Bugra H. Ertas
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Plain bearing for a planet gear of a mechanical reduction gear with...
- Patent number 12,320,264
- Issue date Jun 3, 2025
- SAFRAN TRANSMISSION SYSTEMS
- Jordane Emile Andre Peltier
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Gearboxes for aircraft gas turbine engines
- Patent number 12,297,745
- Issue date May 13, 2025
- Rolls-Royce PLC
- Mark Spruce
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Geared gas turbine engine
- Patent number 12,297,779
- Issue date May 13, 2025
- Rolls-Royce PLC
- Mark Spruce
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Multi-speed turbine reduction gearbox system and method
- Patent number 12,297,728
- Issue date May 13, 2025
- SIGNAL POWER GROUP OPERATING LLC
- David Keith Crowe
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Component mounting and drive in a geared turbofan architecture
- Patent number 12,292,110
- Issue date May 6, 2025
- RTX Corporation
- Todd A. Davis
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Fluid damper for turbine engine geartrain assembly
- Patent number 12,292,107
- Issue date May 6, 2025
- RTX Corporation
- Paul R. Hanrahan
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Gutter for recovering lubrication oil for a mechanical reducer comp...
- Patent number 12,286,890
- Issue date Apr 29, 2025
- SAFRAN TRANSMISSION SYSTEMS
- Juan-Luis Marcos Izquierdo
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Module for an aircraft turbine engine
- Patent number 12,281,581
- Issue date Apr 22, 2025
- SAFRAN AIRCRAFT ENGINES
- Caroline Marie Frantz
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Planet gear clearances in epicyclic gearboxes
- Patent number 12,276,228
- Issue date Apr 15, 2025
- General Electric Company
- Kedar S. Vaidya
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Fan drive gear system rotating oil baffle
- Patent number 12,270,336
- Issue date Apr 8, 2025
- RTX Corporation
- Francis Parnin
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Electric motor driven auxiliary oil system for geared gas turbine e...
- Patent number 12,259,036
- Issue date Mar 25, 2025
- RTX Corporation
- William G. Sheridan
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Gearbox assembly
- Patent number 12,258,909
- Issue date Mar 25, 2025
- General Electric Company
- David Yamarthi
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Passive auxiliary lubrication system
- Patent number 12,258,904
- Issue date Mar 25, 2025
- General Electric Company
- Norman A. Turnquist
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Modular cabin blower system for aircraft
- Patent number 12,258,908
- Issue date Mar 25, 2025
- Rolls-Royce PLC
- Richard G. Stretton
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Mechanical part for an aircraft turbomachine
- Patent number 12,259,038
- Issue date Mar 25, 2025
- SAFRAN TRANSMISSION SYSTEMS
- Juan-Luis Marcos Izquierdo
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Torque sensor for an aircraft propulsion system gearbox assembly
- Patent number 12,253,162
- Issue date Mar 18, 2025
- Pratt & Whitney Canada Corp.
- Michel Desjardins
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Transmission and method for control of boost spool
- Patent number 12,253,021
- Issue date Mar 18, 2025
- RTX Corporation
- Paul R. Hanrahan
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Gas turbine engine front section
- Patent number 12,247,493
- Issue date Mar 11, 2025
- RTX Corporation
- Frederick M. Schwarz
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Airfoil attachment for turbine rotor
- Patent number 12,247,497
- Issue date Mar 11, 2025
- RTX Corporation
- Michael G. McCaffrey
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Planetary carrier and planetary gear mechanism
- Patent number 12,241,542
- Issue date Mar 4, 2025
- Kawasaki Jukogyo Kabushiki Kaisha
- Takunobu Nishida
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Hub-mounted electric blade pitch control
- Patent number 12,234,746
- Issue date Feb 25, 2025
- Textron eAviation Inc.
- Paul C. Collado
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Floating oil manifold for planetary gear systems
- Patent number 12,234,907
- Issue date Feb 25, 2025
- GE AVIO S.R.L.
- Giulio Zagato
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Geared turbomachine fan and compressor rotation
- Patent number 12,234,791
- Issue date Feb 25, 2025
- RTX Corporation
- William G. Sheridan
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
System for supplying fuel to a turbomachine
- Patent number 12,234,772
- Issue date Feb 25, 2025
- SAFRAN AIRCRAFT ENGINES
- Loic Pora
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Fan module provided with an oil transfer device
- Patent number 12,228,074
- Issue date Feb 18, 2025
- SAFRAN AIRCRAFT ENGINES
- Julien Fabien Patrick Becoulet
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Grant
Planetary gearbox device and gas turbine engine with a planetary ge...
- Patent number 12,228,083
- Issue date Feb 18, 2025
- Rolls-Royce Deutschland Ltd & Co KG
- Ivo Martin
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
High power epicyclic gearbox and operation thereof
- Patent number 12,221,929
- Issue date Feb 11, 2025
- Rolls-Royce PLC
- Mark Spruce
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Aircraft turbomachine with mechanical reduction gear
- Patent number 12,221,931
- Issue date Feb 11, 2025
- SAFRAN TRANSMISSION SYSTEMS
- Guillaume Pierre Mouly
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Turbomachine module equipped with an electric machine, and turbomac...
- Patent number 12,215,631
- Issue date Feb 4, 2025
- SAFRAN AIRCRAFT ENGINES
- Frédéric Dautreppe
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS

Patents Applicationslast 30 patents

Information Patent Application
FLEXIBLE SUPPORT STRUCTURE FOR A GEARED ARCHITECTURE GAS TURBINE EN...
- Publication number 20250163828
- Publication date May 22, 2025
- RTX Corporation
- Michael E. McCune
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
ELECTRIC MOTOR DRIVEN AUXILIARY OIL SYSTEM FOR GEARED GAS TURBINE E...
- Publication number 20250164003
- Publication date May 22, 2025
- RTX Corporation
- William G. Sheridan
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
GAS TURBINE ENGINE FRONT SECTION
- Publication number 20250154881
- Publication date May 15, 2025
- RTX Corporation
- Frederick M. Schwarz
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
FLEXIBILITIES IN A GAS TURBINE ENGINE WITH SPEED REDUCER
- Publication number 20250137407
- Publication date May 1, 2025
- SAFRAN AIRCRAFT ENGINES
- Julien Fabien Patrick BECOULET
- F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information Patent Application
FLUID DAMPER FOR TURBINE ENGINE GEARTRAIN ASSEMBLY
- Publication number 20250109784
- Publication date Apr 3, 2025
- RTX Corporation
- Paul R. Hanrahan
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
SELECTIVE POWER DISTRIBUTION FOR AN AIRCRAFT PROPULSION SYSTEM
- Publication number 20250109712
- Publication date Apr 3, 2025
- RTX Corporation
- Paul R. Hanrahan
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
AIRCRAFT PROPULSION SYSTEM WITH AUXILIARY TURBINE SYSTEM
- Publication number 20250109707
- Publication date Apr 3, 2025
- RTX Corporation
- Paul R. Hanrahan
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
INTER-ROTATING ASSEMBLY POWER COUPLING SYSTEM FOR TURBINE ENGINE
- Publication number 20250101921
- Publication date Mar 27, 2025
- RTX Corporation
- Paul R. Hanrahan
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
GEARBOX ASSEMBLY WITH LUBRICANT EXTRACTION VOLUME RATIO
- Publication number 20250102058
- Publication date Mar 27, 2025
- GENERAL ELECTRIC COMPANY
- Bugra H. Ertas
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
FAN DRIVE GEAR SYSTEM ROTATING OIL BAFFLE
- Publication number 20250092824
- Publication date Mar 20, 2025
- RTX Corporation
- Francis Parnin
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
PLANETARY FAN DRIVE GEAR SYSTEM AUXILIARY OIL CAPTURE SYSTEM
- Publication number 20250092832
- Publication date Mar 20, 2025
- RTX Corporation
- Marc J. Muldoon
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
INTEGRATED GEAR MOTOR (IGM)
- Publication number 20250092850
- Publication date Mar 20, 2025
- Rolls-Royce Corporation
- Mathew G. Hill
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
SYSTEM AND METHOD FOR DETECTING AND REDUCING TORQUE IN A TURBINE EN...
- Publication number 20250084799
- Publication date Mar 13, 2025
- GENERAL ELECTRIC COMPANY
- Brandon Wayne Miller
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
GEARBOXES FOR AIRCRAFT GAS TURBINE ENGINES
- Publication number 20250067220
- Publication date Feb 27, 2025
- Rolls-Royce plc
- Mark Spruce
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
AIR PRESSURISATION SYSTEM
- Publication number 20250066024
- Publication date Feb 27, 2025
- Rolls-Royce plc
- Christopher A MURRAY
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
AIRCRAFT TURBOMACHINE WITH MECHANICAL REDUCTION GEAR
- Publication number 20250059919
- Publication date Feb 20, 2025
- Safran Transmission Systems
- Guillaume Pierre MOULY
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
ENGINE MOUNT SYSTEM FOR A GAS TURBINE ENGINE
- Publication number 20250058887
- Publication date Feb 20, 2025
- RTX Corporation
- Gabriel L. Suciu
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
AIRCRAFT PROPULSION SYSTEM GEARTRAIN
- Publication number 20250058888
- Publication date Feb 20, 2025
- RTX Corporation
- Paul R. Hanrahan
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
EPICYCLIC GEAR TRAIN
- Publication number 20250052168
- Publication date Feb 13, 2025
- RTX Corporation
- Michael E. McCune
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
ELONGATED JOURNAL BEARING FOR HIGH GEAR RATIO EPICYCLIC FAN DRIVE G...
- Publication number 20250052202
- Publication date Feb 13, 2025
- RTX Corporation
- Mark A. Klein
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
GAS TURBINE ENGINE WITH FRONT SUPPORT ARRANGEMENT
- Publication number 20250052204
- Publication date Feb 13, 2025
- RTX Corporation
- William G. Sheridan
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
HYBRID TURBOFAN ENGINE WITH A PLANETARY GEARSET FOR BLENDING POWER...
- Publication number 20250043733
- Publication date Feb 6, 2025
- VerdeGo Aero, Inc.
- David N. Spitzer
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
NEUTRAL TURBINE GEARBOX SYSTEM AND METHOD
- Publication number 20250043670
- Publication date Feb 6, 2025
- Signal Power Group Operating LLC
- David Keith Crowe
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
METHOD OF ASSEMBLY FOR GAS TURBINE FAN DRIVE GEAR SYSTEM
- Publication number 20250043732
- Publication date Feb 6, 2025
- RTX Corporation
- Michael E. McCune
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
GEARED GAS TURBINE ENGINE
- Publication number 20250035050
- Publication date Jan 30, 2025
- Rolls-Royce plc
- Mark Spruce
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
SUN GEAR FOR A MECHANICAL REDUCTION GEAR OF AN AIRCRAFT TURBOMACHINE
- Publication number 20250027454
- Publication date Jan 23, 2025
- Safran Transmission Systems
- Patrice Jocelyn Francis GEDIN
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
MODULE FOR AN AIRCRAFT TURBINE ENGINE
- Publication number 20250002138
- Publication date Jan 2, 2025
- SAFRAN AIRCRAFT ENGINES
- Caroline Marie FRANTZ
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
LOW NOISE TURBINE FOR GEARED TURBOFAN ENGINE
- Publication number 20250003426
- Publication date Jan 2, 2025
- RTX Corporation
- Bruce L. Morin
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
HIGH POWER EPICYCLIC GEARBOX AND OPERATION THEREOF
- Publication number 20240426252
- Publication date Dec 26, 2024
- Rolls-Royce plc
- Mark Spruce
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
FLEXIBILITIES IN A GAS TURBINE ENGINE WITH A SPEED REDUCER
- Publication number 20240410319
- Publication date Dec 12, 2024
- SAFRAN AIRCRAFT ENGINES
- Julien Fabien Patrick BECOULET
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS

of the epicyclical, planetary or differential type

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Gearbox assembly with lubricant extraction volume ratio

Plain bearing for a planet gear of a mechanical reduction gear with...

Gearboxes for aircraft gas turbine engines

Geared gas turbine engine

Multi-speed turbine reduction gearbox system and method

Component mounting and drive in a geared turbofan architecture

Fluid damper for turbine engine geartrain assembly

Gutter for recovering lubrication oil for a mechanical reducer comp...

Module for an aircraft turbine engine

Planet gear clearances in epicyclic gearboxes

Fan drive gear system rotating oil baffle

Electric motor driven auxiliary oil system for geared gas turbine e...

Gearbox assembly

Passive auxiliary lubrication system

Modular cabin blower system for aircraft

Mechanical part for an aircraft turbomachine

Torque sensor for an aircraft propulsion system gearbox assembly

Transmission and method for control of boost spool

Gas turbine engine front section

Airfoil attachment for turbine rotor

Planetary carrier and planetary gear mechanism

Hub-mounted electric blade pitch control

Floating oil manifold for planetary gear systems

Geared turbomachine fan and compressor rotation

System for supplying fuel to a turbomachine

Fan module provided with an oil transfer device

Planetary gearbox device and gas turbine engine with a planetary ge...

High power epicyclic gearbox and operation thereof

Aircraft turbomachine with mechanical reduction gear

Turbomachine module equipped with an electric machine, and turbomac...

Patents Applicationslast 30 patents

FLEXIBLE SUPPORT STRUCTURE FOR A GEARED ARCHITECTURE GAS TURBINE EN...

ELECTRIC MOTOR DRIVEN AUXILIARY OIL SYSTEM FOR GEARED GAS TURBINE E...

GAS TURBINE ENGINE FRONT SECTION

FLEXIBILITIES IN A GAS TURBINE ENGINE WITH SPEED REDUCER

FLUID DAMPER FOR TURBINE ENGINE GEARTRAIN ASSEMBLY

SELECTIVE POWER DISTRIBUTION FOR AN AIRCRAFT PROPULSION SYSTEM

AIRCRAFT PROPULSION SYSTEM WITH AUXILIARY TURBINE SYSTEM

INTER-ROTATING ASSEMBLY POWER COUPLING SYSTEM FOR TURBINE ENGINE

GEARBOX ASSEMBLY WITH LUBRICANT EXTRACTION VOLUME RATIO

FAN DRIVE GEAR SYSTEM ROTATING OIL BAFFLE

PLANETARY FAN DRIVE GEAR SYSTEM AUXILIARY OIL CAPTURE SYSTEM

INTEGRATED GEAR MOTOR (IGM)

SYSTEM AND METHOD FOR DETECTING AND REDUCING TORQUE IN A TURBINE EN...

GEARBOXES FOR AIRCRAFT GAS TURBINE ENGINES

AIR PRESSURISATION SYSTEM

AIRCRAFT TURBOMACHINE WITH MECHANICAL REDUCTION GEAR

ENGINE MOUNT SYSTEM FOR A GAS TURBINE ENGINE

AIRCRAFT PROPULSION SYSTEM GEARTRAIN

EPICYCLIC GEAR TRAIN

ELONGATED JOURNAL BEARING FOR HIGH GEAR RATIO EPICYCLIC FAN DRIVE G...

GAS TURBINE ENGINE WITH FRONT SUPPORT ARRANGEMENT

HYBRID TURBOFAN ENGINE WITH A PLANETARY GEARSET FOR BLENDING POWER...

NEUTRAL TURBINE GEARBOX SYSTEM AND METHOD

METHOD OF ASSEMBLY FOR GAS TURBINE FAN DRIVE GEAR SYSTEM

GEARED GAS TURBINE ENGINE

SUN GEAR FOR A MECHANICAL REDUCTION GEAR OF AN AIRCRAFT TURBOMACHINE

MODULE FOR AN AIRCRAFT TURBINE ENGINE

LOW NOISE TURBINE FOR GEARED TURBOFAN ENGINE

HIGH POWER EPICYCLIC GEARBOX AND OPERATION THEREOF

FLEXIBILITIES IN A GAS TURBINE ENGINE WITH A SPEED REDUCER