Patent ID: 9193469
Filing Date: 2015-11-24
Classification: B64D,F02K,F05D

Abstract:
1. An aircraft jet engine, comprising: an exhaust-gas nozzle having a device configured to blow out an exhaust gas in a pulsating manner into an exhaust-gas stream so as to reduce noise, the exhaust-gas nozzle including two rows of openings arranged axially one behind the other and configured to blow the exhaust gas in and out alternatingly, the two rows of openings being distributed along a circumference of the exhaust-gas nozzle and disposed upstream from a nozzle outlet so as to generate a pulsed turbulence layer around the circumference of the exhaust-gas nozzle, the openings communicating with the device; wherein the device comprises an annular space that surrounds a nozzle channel and that is divided by a partition wall into two annular chambers, each of the two annular chambers communicating with a respective one of the two rows of the openings, the partition wall being configured to move in an oscillating manner so as to alternatingly increase a size of one of the annular chambers and correspondingly decrease a size of the other one of the annular chambers.