BREATHING SYSTEM OF TURBINE PEDESTAL OF DOUBLE-FLOW JET TURBINE ENGINE Russian patent published in 2012 - IPC F02C7/06 F02K3/04 

FIELD: engines and pumps.

SUBSTANCE: breathing system includes a valve connected to air supply and discharge pipelines. Air supply pipeline is arranged in pedestal post and connected to oil pre-cavity of the turbine. Air discharge pipeline is connected to atmosphere. Valve is arranged in external flow of the engine and equipped with additional inlet pipeline arranged in neighbouring pedestal post. Inlet pipelines are connected to valve by means of inlet channels. Valve body has stream-lined shape and is provided with cover arranged on external surface of external flow. Outlet pipeline is connected to the cover. Inlet channel of valve is preferably formed with housing of external engine flow and shaped strap attached to it.

EFFECT: invention allows reducing external overall dimensions of engine in its rear part, improving its streamlining during operation when installed on an aircraft, and thus improving flight characteristics of aircraft.

2 cl, 4 dwg