Supersonic jet engine installation and method with sound suppres

Details Supersonic jet engine installation and method with sound suppres Supersonic jet engine installation and method with sound suppres

1993-12-30

1995-11-07

Thorpe, Timothy S.

Power plants

Reaction motor

Method of operation

60242, 60262, 23926517, F02K 302

Patent

active

054638666

ABSTRACT:
A supersonic jet engine having a nozzle section into which ambient air can be selectively introduced for a noise suppressing mode of operation, with this ambient air being intermixed with engine exhaust flow, through passageway segments. Flow modulating plugs or vanes are positioned at the exhaust end of engine exhaust outlet segments in a mixing section, and these are operated during noise suppression mode to match engine requirements. There is a final nozzle section which during the noise suppressing mode is opened to present a relatively large cross sectional flow area to accommodate the mixed flow.
During the non-noise suppressing mode, the final nozzle has a convergent/divergent configuration to control flow, and the plug or vane flow modulating means are positioned to permit unrestricted flow from the engine exhaust outlet segments.

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Pearson, Journal Of The Royal Aeronautical Society, V.62, No. 573 Sep., 1958., p. 662.

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