DEVICE FOR COUPLING OF JET ENGINE NOZZLE OUTER SURFACE AND AIRCRAFT NACELLE Russian patent published in 2021 - IPC F02K1/80 F02K1/52 B64D29/00 

FIELD: aircraft engine building.

SUBSTANCE: invention relates to coupling of jet nozzle and aircraft nacelle. Device for connection of outer surface of jet nozzle (2) of engine and aircraft nacelle (1) includes ring of elastic elements (3), having external and internal flaps, One end is connected with flange. Flange is located on engine nacelle outlet part. Free end of inner flaps adjoins outer surface of jet nozzle. Device is equipped with a spacer and a clamping element. Ends of outer and inner shutters are fixed on flange with spacer arranged between them. Geometry of spacer provides required profile of outer flap, which is consistent with theoretical contour of aircraft. Clamping element is made enveloping the inner flaps so that their free ends adjoin the outer surface of the jet nozzle. Each outer and inner flaps are additionally rigidly interconnected at one point.

EFFECT: device provides tight joint and required geometrical transition of nozzle outer surface with nacelle, minimum wear during engine operation, is easy-to-manufacture and has reduced weight.

6 cl, 3 dwg