Mach Wave Elimination
A new method for quieting high-speed jets
(U.S. Patents 5590520 and 5916127)


THE CONCEPT

EXPERIMENTAL SETUP

ACOUSTIC DATA

APPLICATION TO AEROENGINES

TECHNOLOGY EXCHANGE

FUTURE PLANS

SPONSORSHIP

PUBLICATIONS

PUBLICITY & AWARDS

TMWE:   JETS WITH ARCUATE COFLOW
dBA spectra at theta=40 deg.

Very-far-field measurements (r/D=200) performed without anechoic chamber

Jet: Mach 1.5, 700 m/s
Coflow: Mach 0.95, 360 m/s, bypass ratio=1.7

polar_angle.jpg (1539 bytes) azimuth_angle.jpg (2389 bytes)

tmwe_arc_dba_comp1.jpg (26760 bytes)

 

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