FLUIDIC CHEVRONS AND CONFIGURABLE THERMAL SHIELD FOR JET NOISE REDUCTION

摘要

A system for jet engine noise control of a jet engine having a main jet (32) stream exiting an exhaust nozzle (44) and flowing along a jet axis (30) includes a thermal acoustic shield (42) directed at a non-zero angle relative to the jet axis (30). The thermal acoustic shield (42) may be configurable about the main jet (32) stream. The system may further include at least a fluidic chevron (40) injected at a location relative to the nozzle exit (44) for enhancing mixing in the main jet (32) stream and creating a non-circular jet stream.