Jet engine noise reduction system

Details Jet engine noise reduction system Jet engine noise reduction system

1990-02-02

1991-10-29

Casaregola, Louis J.

Power plants

Reaction motor

Air passage bypasses combustion chamber

60271, 181213, 415119, F01N 124, F02K 104

Patent

active

050604716

ABSTRACT:
A noise reduction system for a jet engine including a tubular exhaust shroud affixed to the engine through which engine exhaust gases pass, porous acoustical lining affixed to a substantial portion of the internal circumferential surface of the shroud, a chamber in contact with the acoustical lining outer surface and a controllable source of air pressure affixed to the chamber to control the passage of air through the acoustical lining to thereby vary the acoustical absorption properties of the lining.

REFERENCES:
patent: 3262264 (1966-07-01), Gardiner et al.
patent: 3750402 (1973-08-01), Vdoviak et al.
patent: 4293053 (1981-10-01), Shuttleworth et al.
patent: 4433751 (1984-02-01), Bonneau
C. L. Arctander, C. G. Hodge; R. B. Tate; "Development of Noise-Reduction Concepts for 727 & 737 Airplanes"; Journal Acoustic Society America; vol. 58, No. 1, Jul. 1975.

Affiliated with

Also associated with

Rating

Jet engine noise reduction system does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1391244