CONE OF JET NOZZLE OF AIRCRAFT JET TURBINE ENGINE PROVIDED WITH DEVICE GENERATING TURBULENCE OF FIRST STAGE FLOW AND LIMITING JET FLOW NOISE Russian patent published in 2013 - IPC F02K1/08 

FIELD: engines and pumps.

SUBSTANCE: cone of a jet nozzle of aircraft jet turbine engine contains a hollow primary housing. External surface of the primary housing is the internal side limiting annular channels of the first stage flow of the jet turbine engine in radial direction. The cone also contains a device for generation of turbulence of the first stage flow designed with possibility of movement in the hollow primary housing from extended position to retracted position. In extended position it extends downstream relative to the edge arranged below by stream of the specified hollow primary housing. In retracted position it is retracted into the specified hollow primary housing and in opposite direction. Mentioned device for generation of turbulence contains a cylindrical bearing housing which axis is parallel to the axis of the jet nozzle, and at least one rib located on the specified cylindrical bearing housing. The hollow primary housing includes a slot for arrangement of each rib of the device for generation of turbulence when it is retracted. The other objects of this invention are an aircraft jet turbine engine, containing above mentioned cone, and a power plant, containing such an aircraft jet turbine engine.

EFFECT: invention allows reducing jet flow noise.

7 cl, 6 dwg