BYPASS TURBOMACHINE WITH REDUCED JET NOISE Russian patent published in 2012 - IPC F02K1/34 

Abstract RU 2468232 C2

FIELD: machine building.

SUBSTANCE: bypass turbomachine comprises a fan driven with a gas generator, a circular channel of a fan formed from outside with a gondola, and the main circular channel for letting through a gas flow arriving from a gas generator. The gondola in direction from the side upstream the flow towards the side downstream the flow comprises a fixed sleeve for air inlet, two semi-cylindrical covers for maintenance and two semi-cylindrical covers of a thrust reversal. Thrust reversal covers are arranged with the possibility of displacement relative to the sleeve for air inlet by means of sliding in a direction parallel to the longitudinal axis of the turbomachine. Also the gondola additionally comprises at least one air intake hole in the main channel stretching towards the air intake pipe. The air intake pipe is arranged inside the sleeve for air inlet of the gondola, besides, the air intake pipe exits to two pipes for air scattering near a pylon serving to fix the gondola under an airplane wing. Each pipe for air scattering is fixed to an appropriate cover for maintenance and exits to a pipe for air injection, which is fixed to the appropriate cover of the thrust reversal. The pipe for air injection exits to the outer side of the gondola through its rear edge and is arranged as capable of disconnection from the appropriate pipe for air scattering on the appropriate cover of the thrust reversal, sliding in a downstream direction.

EFFECT: invention makes it possible to reduce jet noise at an outlet from a turbomachine nozzle.

5 cl, 7 dwg

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RU 2 468 232 C2

Authors

Beten Brjuno Al'Ber

Derene Zhaki Rafaehl' Mishel'

Ajkhshtadt Frederik Pol'

Vjuill'Men Aleksandr Al'Fred Gaston

Dates

2012-11-27Published

2008-08-22Filed