This experimental and theoretical work involved reduction of supersonic jet noise using Mach Wave Elimination (MWE), a method that suppresses noise by means of a gaseous layer that envelops the supersonic jet. Also explored was a new method for mixing enhancement in which an axial, secondary flow enhances mixing in a primary flow. The research is relevant to the advent of future supersonic transports that must adhere to the same take-off and landing restrictions as ordinary subsonic aircraft. To reduce noise, one needs to understand the fundamental fluid mechanics of the jet, namely its turbulent structure and mean-flow characteristics, and to perform high-quality noise measurements. The results generated are applicable to free jets as well as to jets within ejectors.
Experimental Investigation of Supersonic Coplanar Jets within Ejectors
2001-01-01
Miscellaneous
No indication
English
NTIS | 1972
|TIBKAT | 1974
|Ejectors and rotary jets as thrust augmenters
Tema Archive | 1976
|Supersonic jet noise reduction by tabs and ejectors
AIAA | 1993
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