SIMPLIFIED CONTROL BYPASS GAS-TURBINE ENGINE WITH MEANS OF EXTRACTION OF EXCESS AIR Russian patent published in 2004 - IPC

FIELD: aircraft industry. SUBSTANCE: invention relates to bypass gas turbine engine containing intermediate structural housing installed between channel of primary circuit and channel of secondary circuit. Said housing is arranged axially between low-pressure compressor and high-pressure compressor and is furnished with devices to extract excess air making it possible to direct part of gas flow delivered by low-pressure compressor into secondary circuit channel. Means of extraction of excess air contain ring space forming manifold and located in direction of flow before intermediate housing in outer wall of primary circuit channel and communicating uninterruptedly with channel of said primary circuit, great number of practically axial channels made in said intermediate housing and connected with manifold, and great of tubes arranged around high-pressure compressor to provide- communication of channels with channel of secondary circuit. Tubes are provided with flow rate control valves. EFFECT: simplified excess air extraction system. 5 cl, 1 dwg