C.r.f. Societa Consortile Per Azioni

Ge Avio S.r.l.

Marco Garabello

Andrea Piazza

Gianluigi Pregnolato

Valter Pastorello

Fabio Pesola

Alessio Gargioli

Paolo Altamura

Giancarlo Osella

Dario Caenazzo

Gian Mario Bragallini

Sara Sottano

Giuseppe Argentieri

Salvatore Garofalo

Attilio Porta

Simone Castellani

Domenico Mesiti

Davide Lauria

Carlo Emilio Baret

Gian Luigi Pregnolato

Gianni Piacenza

Jan Biskupski

Maurizio Uberti

Fabrizio Bussi

Attillio Porta

Ottavia Pica

Simone Iurlaro

Enrica Gilardi

An aircraft engine component () may include a wall () comprising an aluminum alloy and/or a magnesium alloy, and a protective coating () covering the wall (). The protective coating () may include a prime layer (), a silicone elastomer layer (), and an abrasion resistant layer (). The prime layer () may at least partially cover a surface () of the wall (). The prime layer () may include a silane coupling agent and an organic titanate. The silicone elastomer layer () may at least partially cover the prime layer (). The silicone elastomer layer () may include one or more filler materials dispersed in a matrix of cross-linked silicone polymers. The abrasion resistant layer () may at least partially cover the silicone elastomer layer (). The abrasion resistant layer () may include a fiber-reinforced elastomeric material.

Protective coatings for aircraft engine components

A gearbox assembly for a gas turbine engine includes a planetary gear set comprising a sun gear, a planet gear, and a ring gear, the sun gear configured for connection to a first drive shaft of the gas turbine engine and the ring gear configured for connection to a second drive shaft of the gas turbine engine, and an electric machine assembly comprising an input and an electric machine. The electric machine comprising a rotor coupled to the input and a stator fixedly positioned within the gearbox assembly, the input of the electric machine assembly coupled to one of the sun gear, the ring gear, or the planet gear of the planetary gear set.

Hybrid transmission on propeller gearbox

An engine assembly defining an axial direction (A) and including a gearbox, an engine core including at least one rotor, and a flexible coupling shaft having a first end and a second end along the axial direction (A). The first end of the flexible coupling shaft is connected to the engine core and the second end of the flexible coupling shaft is connected to the gearbox. A damper system is positioned at the second end of the flexible coupling shaft. The damper system is configured to reduce vibrations to the flexible coupling shaft during operation of the engine assembly.

Damper system for an engine shaft

The present disclosure is directed to a turbine engine () defining an axial direction and a radial direction. The turbine engine includes a fan or propeller assembly () comprising a gearbox; an engine core () comprising one or more rotors, wherein at least one of the rotors defines an axially extended annular hub; and a flexible coupling shaft () defining a first end and a second end along the axial direction, wherein the first end is connected to the engine core and the second end is connected to the gearbox, and further wherein the flexible coupling shaft extends from the one or more rotors to the gearbox in the axial direction and inward of the hub in the radial direction.

Method and system of connecting a turbine engine gearbox to engine core

The present disclosure is directed to a shaft assembly () for a turbine engine (), wherein the turbine engine includes a fan or propeller assembly () and an engine core (), and further wherein the fan or propeller assembly includes a gearbox (), and wherein the engine core includes one or more rotors (). The shaft assembly () includes a flexible shaft () defining a first end () and a second end () along the axial direction, wherein the first end is connected to the engine core () and the second end is connected to the gearbox (), and wherein a plurality of splines () is defined at the second end () and coupled to a spline interface () at the gearbox (); and a coupling () extended at least partially in the radial direction and coupled to the engine core and the flexible shaft.

Flexible coupling shaft for turbine engine

The present disclosure is directed to a shaft assembly () for a turbine engine (), the shaft assembly () defining an axial direction and a radial direction, wherein the turbine engine () includes a fan or propeller assembly () and an engine core () and further wherein the fan or propeller assembly () includes a gearbox (). The shaft (assembly) includes a coupling shaft () defining a plurality of coupling shaft teeth () extended in the axial direction, wherein each coupling shaft tooth () is in circumferential arrangement along the coupling shaft (). The coupling shaft () includes a first material () and the plurality of coupling shaft teeth () include a second material () different from the first material ().

Magnetic torque metering system

A turbine engine defines an axial direction and a radial direction and includes a shaft assembly, a fan or propeller assembly, an engine core, a coupling shaft, a spacer, a sleeve, and a nut The coupling shaft defines an annular surface extended along the axial direction and a groove extended in a circumferential direction. The spacer defines a first portion disposed in the groove of the coupling shaft. The sleeve defines a threaded portion that extends along the axial direction and is disposed outward of the spacer in the radial direction. The nut defines a plurality of nut threads configured to mate with the plurality of sleeve threads of the sleeve. The nut defines a radial portion adjacent to at least a portion of the sleeve and at least a portion of the spacer in the axial direction.

Locknut sun gear for gas turbine engine

The present disclosure is directed to a turbine engine () defining an axial direction, a radial direction, a circumferential direction, a first end () and a second end () opposite of the first end () along the axial direction. The turbine engine includes a propeller assembly () proximate to the first end including a plurality of blades () arranged in the circumferential direction disposed around an axial centerline (), and a feathering mechanism () including a hollow piston rod (). The feathering mechanism rotates the plurality of blades about a pitch axis () extended in the radial direction from the axial centerline. The turbine engine further includes a housing () proximate to the second end disposed in adjacent arrangement with the propeller assembly in the axial direction. The axial centerline is defined through the propeller assembly and the housing. The turbine engine further includes a beta tube assembly () extended through the hollow piston rod and at least partially through the housing in coaxial alignment with the axial centerline. The beta tube assembly defines an at least partially hollow walled pipe () extended along the axial direction. The beta tube assembly further defines a plurality of grooves () extended along the axial direction proximate to the housing. A first groove () extends at least partially in the circumferential direction and along the axial direction to at least partially define a helix () corresponding to a rotatable range of the plurality of blades about the pitch axis, and a second groove () extends in the axial direction.

System and method of locating feathering propeller blade angular position

A system for feathering a propeller assembly disposed within a housing of the propeller assembly has a sleeve defining an outer wall and one or more sleeve tabs extended outward in a radial direction along at least a circumferential portion of the sleeve, wherein the one or more sleeve tabs is separated from the outer wall in an axial direction, a retainer defining one or more retainer tabs extended inward in the radial direction, wherein the one or more retainer tabs is disposed between the outer wall and the one or more sleeve tabs of the sleeve along the axial direction, and a beta tube assembly extended through the sleeve along the axial direction. The beta tube assembly defines one or more internal walls. The one or more internal walls defines a hydraulic fluid transfer cavity in fluid communication with one or more hydraulic fluid transfer orifices.

Transfer bearing collapsing device

A hybrid powertrain unit comprises an engine and a gearbox device with a primary shaft connectable to a shaft of the engine via a clutch device. The gearbox device comprises a secondary shaft with an output pinion meshing with a first crown wheel of a differential, the casing of which is rigidly connected to a casing of the gearbox device. The unit comprises an electric machine configured to operate as an electric motor and as an electric generator, and having a shaft connected by a transmission to a second crown wheel of the differential. In the transmission, arranged between the electric machine shaft and the second crown wheel is an engagement device that can be operated via an electronically controlled actuator. The transmission that connects the electric machine shaft to said second crown wheel includes an auxiliary shift device configured for providing at least two different selectable transmission ratios.

Hybrid powertrain unit for motor vehicles with a variable transmission device between the electric machine and the differential

A hybrid powertrain unit comprises an engine and a gearbox device with a primary shaft that can be connected to a shaft of the engine via a clutch. The gearbox device comprises a secondary shaft with an output pinion meshing with a first crown wheel of a differential, the casing of which is rigidly connected to a casing of the gearbox device. An electric machine of the unit is configured to function as electric motor and an electric generator, having a shaft connected by a transmission to a second crown wheel of the differential. In the transmission, which is arranged between the electric machine shaft and the second crown wheel is an engagement device that can be driven via an actuator. The electric machine shaft is connected to the engine shaft on a side opposite of the gearbox device. The transmission includes a gear-reduction jump constituted by a belt transmission.

Hybrid powertrain unit for motor vehicles with a belt transmission device between electric machine and differential

A hybrid powertrain unit comprises an engine and a gearbox with a primary shaft connectable to an engine shaft via a clutch and a secondary shaft with an output pinion meshing with a first differential crown wheel. An electric machine is configured to function as an electric motor and generator, having a shaft connected by a transmission to a second differential crown wheel. The transmission, arranged between the electric machine shaft and the second crown wheel includes a first engagement device. The electric machine shaft is connected to the engine shaft by a belt transmission including a belt engaged on a first pulley connected to the electric machine shaft and a second pulley connected to the engine shaft. Between the electric machine shaft and said first pulley is a second engagement device. The engagement devices are arranged coaxially with the electric machine shaft on opposite sides of the electric machine.

Hybrid powertrain unit for motor vehicles with engagement devices on opposite sides of the electric machine

A hybrid powertrain unit comprises an engine, and a gearbox device with a primary shaft connectable to a shaft of the engine via a clutch. The gearbox device comprises a secondary shaft with an output pinion meshing with a first crown wheel of a differential, the casing of which is rigidly connected to a casing of the gearbox device. An electric machine is configured to function as an electric motor and an electric generator, having a shaft connected by a transmission to a second crown wheel of the differential. In the transmission, arranged between the electric machine shaft and the second crown wheel is an engagement device that can be actuator driven. The electric machine shaft is connected to the engine shaft, on a side opposite to the gearbox device by a belt transmission that controls vehicle auxiliary devices, which are mounted coaxially with respect to the electric machine.

Hybrid powertrain unit for motor vehicles provided with auxiliary devices

A hybrid powertrain unit comprises an engine, and a gearbox device with a primary shaft connectable to an engine shaft via a clutch. The gearbox device comprises a secondary shaft with an output pinion meshing with a first crown wheel of a differential, the casing of which is rigidly connected to the casing of the gearbox device. The unit comprises an electric machine configured to function as an electric motor and an electric generator, having a shaft connected by a transmission to a second crown wheel of the differential. In the transmission, arranged between the electric machine shaft and the second crown wheel is an engagement device that can be driven via an actuator. The electric machine shaft is connected to the engine shaft, on a side opposite to the gearbox device. The transmission includes a gear for driving a transmission shaft connected to a further axle of the vehicle.

Growing community of inventors

Orbassano, Italy

Marco Garabello