METHOD AND APPARATUS FOR QUIETING A TURBOJET ENGINE
Assignee
Filed
Feb 13, 1991
Granted
Apr 20, 1993
Location
LOS ANGELES CA US
Abstract
A noise suppressor for attachment to the aft end of an existing turbojet engine. The noise suppressor includes a free-running turbofan wheel which includes a turbine section mounted for reaction to the exhaust gas from the jet engine, and a concentric outer fan section extending within an air duct concentric with the turbofan wheel. The jet exhaust from normal operation of the jet engine spins the free-running turbofan wheel, and the fan section of that wheel produces a flow of compressed air through the duct to surround and mix with the jet exhaust, thereby reducing the noise emission of the jet engine. A thrust reverser and an afterburner are optional for use with the noise suppressor.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Aug 22, 1991
Rescinded
Mar 31, 1992
Duration
7 months
Inventor
- 1ALLEN E. PAULSON
Record Details
- Patent number
- US 5203164
- Application
- 07654584
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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