NOZZLE OF AIRBORNE VEHICLE Russian patent published in 2013 - IPC F02K9/97 

FIELD: machine building.

SUBSTANCE: nozzle includes a flare made from erosion resistant press-material, a sealing plug connected to inner surface of flare by means of an organic cord, and a protective plug installed inside the flare flush with its cut and attached to inner surface of the flare by means of an organic cord. Protective plug is made from foam material and has a radial annular groove made on its outer side surface, as well as an annular slot made on its end surface opposite radial annular groove. Metal sealing plug has an annular thinning coaxial to the flare axis. Protective plug is provided with a cylindrical groove coaxial to the flare axis, the cavity of which is interconnected via a through hole to the cavity of radial annular groove. Cavity of radial annular groove is interconnected with atmosphere, and diameter of cylindrical groove exceeds the diameter of annular thinning of metal sealing plug.

EFFECT: invention allows improving operating reliability of the nozzle.

3 dwg