BYPASS TURBOJET ENGINE LOW-PRESSURE TURBINE ROTOR SUPPORT Russian patent published in 2024 - IPC F02C7/06 F01D25/16 

FIELD: aircraft engine building.

SUBSTANCE: invention relates to low-pressure turbine supports (LPT) of bypass turbojet engines (BTJE), as well as to BTJE LPT cooling systems. In the known BTJE LPT rotor support, containing the hollow radial power posts, rigidly fixed on the LPT rotor support housing and rigidly connected to the LPT rotor support bearing housing through the LPT rotor support stator elements, each of the hollow radial power racks is equipped with an air intake, communicating the cavity of the second circuit with the cavity adjacent to the rear surface of the low-pressure turbine disc through the inner cavities of the radial power posts, wherein each of the air intakes is made in the form of a cover with a window, according to the present invention, each of the air intakes is rigidly connected to the low-pressure turbine rotor support housing and is additionally equipped with a hollow element made integral with it, which inlet is directed towards the gas flow of the second circuit of the bypass turbojet engine, and the outlet is communicated with the inner cavity of the cover through a window in it, wherein hollow elements are fixed relative to outer housing of BTJE in circumferential direction with possibility of their axial and radial displacement relative to the latter.

EFFECT: higher reliability of LPT and BTJE in general.

2 cl, 1 dwg