Title:
METHOD AND DEVICE FOR REDUCING ENGINE NOISE
Document Type and Number:
WIPO Patent Application WO/2005/107382
Kind Code:
A3
Abstract:
A method and device to reduce the noise produced by jet aircraft engines and/or
other supersonic nozzles involves the use of corrugated engine seals (30) for
the secondary internal divergent flaps (14) of the nozzle (10). Such corrugated
seals (30) serve not only to eliminate shock-generated noise, but also generate
a counter-rotating vorticity to force low speed mixing of surrounding ambient
air with the high-speed jet exhaust. Lower exhaust velocities, combined with
reduced levels of the turbulent Reynolds shear stress, lead to reduction of turbulence-generated
noise, including Mach wave emission.
Inventors:
SEINER JOHN M (US)
Application Number:
PCT/US2004/039930
Publication Date:
July 12, 2007
Filing Date:
November 30, 2004
Export Citation:
Assignee:
UNIV MISSISSIPPI (US)
SEINER JOHN M (US)
SEINER JOHN M (US)
International Classes:
F02K1/34; F02C7/24; F02K1/12; F02K1/48; F02K1/80; F02K1/82
Foreign References:
| US6968615B1 | 2005-11-29 | |||
| US5485959A | 1996-01-23 | |||
| US5437411A | 1995-08-01 |
Other References:
See also references of EP 1735531A4
Attorney, Agent or Firm:
MYERS, Richard, Jr. et al. (Suite 1800 Nashville, TN, US)
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