Device for reduction of jet noise generated by nozzle, particularly by jet engine, has nozzle, where one or more units are provided for active boundary layer impact of nozzle flow before leaving nozzle

摘要

The device (1) has a nozzle (2), where one or more units (6) are provided for active boundary layer impact of a nozzle flow (3) before leaving the nozzle. The units are provided for the active boundary layer impact for changing the geometry of the inner side of the nozzle, particularly in the area of the nozzle outlet. An independent claim is included for a method for reduction of jet noise generated by a nozzle, particularly by a jet engine.