GAS TURBINE ENGINE FOR AIRCRAFT, EQUIPPED WITH AUTOMATICALLY ACTIVATED CENTRING ELEMENT Russian patent published in 2019 - IPC F01D15/12 F01D25/28 F02C7/20 

FIELD: aviation.

SUBSTANCE: invention relates to aircraft gas turbine engines, particularly, to gas turbine engines comprising a free turbine, one of its bearing bearings being fitted in a reduction gear. Object of the invention is a gas turbine engine comprising a crankcase accommodating a gas generator and a free turbine mounted on the power shaft. Power shaft is made with possibility of mechanical connection/disconnection with reduction gear. Gas turbine engine comprises at least one centring element movable between a position called an active position and a position called a passive position. In active position, it forms support bearing of said power shaft and corresponds to mechanical disconnection between said power shaft and said reduction gear. In passive position it extends from said power shaft and corresponds to mechanical connection between said power shaft and said reduction gear.

EFFECT: invention allows eliminating risk of damaging the sealing system or bearings due to radial runout of the shaft.

8 cl, 5 dwg