JACK SUPPLY DEVICE WITH THE HYDRAULIC FLUID AND CONTAINING THE JACK GAS TURBINE ENGINE PROPELLER PITCH CONTROL MECHANISM Russian patent published in 2018 - IPC B64C11/38 B64C11/48 F15B15/14 

FIELD: technological processes.

SUBSTANCE: invention relates to the comprising stationary support (30) hydraulic jack, movable cylinder (24), which is made with possibility of translational movement relative to the support, stationary piston inside the cylinder, together with the cylinder limiting two chambers, and the chambers supply device with the hydraulic fluid at the stationary support (30, 31) inlet. Jack differs in that the supply device contains telescopic pipelines (25, 26, 28), at that, each telescopic pipeline comprises two tubular members moving by sliding one in the other, at that, by one end the first tubular member is fixedly connected to the stationary support (31), and the second tubular member is fixedly connected to the cylinder at least in two points spaced from each other along the cylinder generatrix. Hydraulic jack is included into the propeller pitch control mechanism and is stationary connected to its stator part.

EFFECT: inventions enable increase in compactness and reliability.

9 cl, 12 dwg