AIR-JET ENGINE EXIT TWO-DIMENSIONAL NOZZLE Russian patent published in 2002 - IPC

FIELD: air-jet engines. SUBSTANCE: proposed exit two-dimensions nozzle of air-jet engine has body with side and horizontal walls are provided with through ports which are closed from top by nozzle shutters and from inside of nozzle, by curtains. Nozzle shutters are made for selective displacement around cross axis, and curtains are made for selective displacement along longitudinal axis and around cross axis of nozzle. Nozzle center body is flat, symmetrical, sectional, with variable geometry front part and rigid rear part. Both parts of nozzle center body are connected by cross partition coupled with drive for turning around cross axis by means of pyramidal bracket. Drive for changing the shape of center body is placed inside bracket. EFFECT: provision of reduction of noise level for civil planes at takeoff, climbing and landing, improved maneuverability in flight. 5 dwg