FLAME TUBE HEAD OF AFTERBURNER WITH FLAME STABILISER OF VARIABLE GEOMETRY

摘要

FIELD: engines and pumps.;SUBSTANCE: flame tube head of afterburner of gas-turbine engine includes radial cooled shutters. Cooled shutters have aerodynamic streamlined shaped parts arranged immediately in flow and have the possibility of being turned about their axis; high-drag body in the form of V-shaped stabiliser is formed at synchronous rotation in opposite directions to a certain angle and at joining of a pair of neighbouring radial cooled shutters. Aerodynamically streamlined shaped parts arranged immediately in the flow smoothly pass to cylindrical axes fixed in housing of flame tube head. Turning device in the form of a rotating ring is located outside afterburner and has the possibility of being blown with ambient air during flight. Various internal cavities and radial channels are made inside radial cooled shutters. Internal cavities are connected to flow part by means of cooling openings located on inner surface of V-shaped stabiliser. Radial channels are connected to flow part by means of injectors for spray of afterburner fuel, which are located on outer surface of V-shaped stabiliser at certain angle to the flow.;EFFECT: invention allows reducing total pressure losses in afterburner of aircraft gas-turbine engine in no-afterburning modes.;2 dwg