Register for free to
view the full innovation profile.
Reduces jet engine noise resulting from aircraft exhaust.
About
Overview A method and device to reduce the noise produced by jet aircraft engines and/or other uperonic nozzles incolves the use of corrugated engine seals for the secondary internal divergent flaps of the nozzle. Such corrugated seals 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.