Method and device for reducing engine noise

F - Mech Eng,Light,Heat,Weapons – 02 – C

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

F02C 7/24 (2006.01) F02K 1/06 (2006.01) F02K 1/82 (2006.01)

Patent

CA 2547846

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.

Selon la présente invention, un procédé et un dispositif conçus pour diminuer le bruit engendré par des moteurs d'avions à réaction et/ou d'autres tuyères supersoniques impliquent l'utilisation de boudins d'étanchéité de réacteur ondulés (30) destinés aux volets divergents internes secondaires (14) de la tuyère (10). Ces boudins d'étanchéité de réacteur ondulés (30) permettent non seulement d'éliminer le bruit engendré par un choc, mais également de générer un tourbillon à contre-rotation de manière à forcer le mélange à une vitesse faible de l'air ambiant environnant avec le flux d'échappement de vitesse élevée. Les vitesses faibles d'échappement combinées à des niveaux réduits de l'effort de cisaillement de Reynolds turbulent débouchent sur une diminution du bruit engendré par les turbulences, y compris, l'émission d'onde de Mach.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Method and device for reducing engine noise does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and device for reducing engine noise, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for reducing engine noise will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1876910

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.