Power plants – Reaction motor – Interrelated reaction motors
Patent
1993-07-30
1995-05-30
Casaregola, Louis J.
Power plants
Reaction motor
Interrelated reaction motors
60244, 60262, F02K 716
Patent
active
054191173
ABSTRACT:
An integral turbo jet/ram jet propulsion system has co-axial forward and rear portions and includes a converging supersonic compression chamber and an inlet in the forward portion for directing air into the supersonic compression chamber. A diverging subsonic compression chamber is disposed rearwardly of the supersonic compression chamber. An inlet sonic throat connects the supersonic compression chamber and the subsonic compression chamber and directs a flow of air from the supersonic compression chamber through the throat and into the subsonic compression chamber. A high by-pass turbo jet engine is disposed adjacent to the subsonic compression chamber for heating and expanding the air which passes into the engine. A subsonic expansion exhaust chamber and supersonic expansion exhaust chamber are disposed rearwardly of the engine with an exhaust sonic throat between the two. The exhaust sonic throat connects the subsonic expansion chamber an the supersonic expansion chamber and directs the air from the engine and the subsonic expansion chamber into and through the supersonic expansion chamber. A throttle member is disposed in each of the throats for increasing and decreasing the amount of compression and expansion as the flow of air passes through each of the throats to an exhaust outlet. The heated expanded air maintains a higher velocity and pressure in and against the supersonic expansion chamber than in the supersonic compression chamber to thereby produce a ram jet effect.
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Treager, Irwin E. Aircraft Gas Turbine Engine Technology McGraw-Hill, N.Y., 1970. p. 59.
Casaregola Louis J.
Hamley James P.
The Boeing Company
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