Power transmission system for a turbine engine
AssigneesSnecma, Hispano Suiza
InventorsSerge Dominique Pettinotti, Vincent Abousleiman, Sebastien Bourget, Mickael Moreiras, Diane Gueudry, Bernard Cartier, Florian Poinsot-Berthelot
Life of this patent
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Abstract
A power transmission system for a turbine engine is provided. The power transmission system includes a transmission shaft that is connected to a drive shaft by bevel gears, and that drives equipment or accessories. The transmission shaft is designed to operate under supercritical conditions and includes a damper system for damping vibration at its resonant speed.
Claims10
A power transmission system for a turbine engine, the power transmission system comprising:
- a transmission shaft connected to a drive shaft;
- a connection system that connects the transmission shaft to equipment or accessories driven by the transmission shaft;
- and
- a removable housing engaged around a radially outer end of the transmission shaft,
- wherein the transmission shaft is designed to operate under supercritical conditions and includes a damper system which damps vibration at a resonant speed of the transmission shaft,
- wherein a guide bearing is mounted on a cylindrical bearing surface of the radially outer end of the transmission shaft, and
- wherein the damper system includes an oil film compression damper formed in an annular space between an inner annular surface of the removable housing and an annular part surrounding an outer ring of the guide bearing.
A method of transmitting power to equipment or accessories of a turbine engine by a transmission shaft connected to a drive shaft via a connection system that connects the transmission shaft to the equipment or accessories of the turbine engine, the method comprising:
- causing the transmission shaft to rotate at a supercritical speed;
- and
- damping vibration via a damping system while the transmission shaft is operating at a resonant speed of the transmission shaft,
- wherein a removable housing engaged around a radially outer end of the transmission shaft,
- wherein a guide bearing is mounted on a cylindrical bearing surface of the radially outer end of the transmission shaft, and
- wherein the damper system includes an oil film compression damper formed in an annular space between an inner annular surface of the removable housing and an annular part surrounding an outer ring of the guide bearing.
Dependencies are inferred from the claim text.