DEVICE TO PREVENT SURGE IN BY-PASS TURBOJET ENGINE AT TAKE OFF Russian patent published in 2005 - IPC

FIELD: aircraft engineering; turbojet engines.

SUBSTANCE: proposed device contains separating partition installed in space between inner and outer loops dividing the space into two gas-dynamic-coupled compartments. One of compartments communicates with outer loop, and the other, through nozzles, with ambient medium. Shutters-air intakes are installed between outer loop and intermediate space. Nozzles are installed between intermediate space and ambient medium. Device is equipped with acceleration capacity and engine operation transmitters, ring cooler installed in intermediate space and enclosing high-pressure compressor housing. Nozzles and shutters-air intakes are provided with drive mechanisms to adjust their areas. Compartments are gas-dynamically intercoupled through ring cooler.

EFFECT: reduced hydraulic losses in cooling duct at better weight characteristics of device preventing engine surge at take off.

2 dwg