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1. (WO2014200401) VARIABLE EXHAUST NOZZLE FOR A JET ENGINE AND METHOD FOR VARYING THE NOZZLE

Pub. No.:    WO/2014/200401    International Application No.:    PCT/SE2013/050695
Publication Date: Fri Dec 19 00:59:59 CET 2014 International Filing Date: Sat Jun 15 01:59:59 CEST 2013
IPC: F02K 1/12
Applicants: SAAB AB
Inventors: BJERKEMO, Jacob
Title: VARIABLE EXHAUST NOZZLE FOR A JET ENGINE AND METHOD FOR VARYING THE NOZZLE
Abstract:
The present invention relates to a variable exhaust nozzle (14) for a jet engine (1), the nozzle (14) comprises an upstream portion (16), flap means (18) being pivotally connectable to the jet engine (1) via the upstream portion (16), the flap means (18) com- prises a downstream portion (16´) forming a downstream linear edge (19'), actuator means (20, 20h, 24) being arranged to actuate said flap means (18) for variation of the nozzles (14) cross sectional area (A1, A2) between a first position and a second position. Said flap means (18) is skewed. The nozzle (14) comprises shape forming flap means (24, 62) for forming the cross sectional area (A1, A2), and adjacent flap means (24, 26, 27, 28) having sliding surfaces (22, 22') in continuous contact during said variation. The present invention also relates to method for varying a variable exhaust nozzle (14) for a jet engine (1).