Variable cycle turbofan-ramjet engine

Details Variable cycle turbofan-ramjet engine Variable cycle turbofan-ramjet engine

1990-02-23

1997-12-09

Carone, Michael J.

Power plants

Reaction motor

Interrelated reaction motors

60262, 602701, F02K 302, F02K 3075

Patent

active

056947682

ABSTRACT:
An improved variable cycle turbofan-ramjet engine is disclosed. The engine includes a split fan assembly, a bypass channel surrounding a core engine and a mode selector valve for selectively bypassing air around an aft fan and the core engine. In a first, single bypass mode of operation, the mode selector valve allows air to flow through both a forward fan and the aft fan, and a portion of which bypasses the core engine. In a second, double bypass mode of operation, the mode selector valve allows air from the forward fan to bypass the aft fan and a portion of the air from the forward fan to bypass the core engine. In a third, ramjet mode of operation, the mode selector vane bypasses air around the aft fan and the core engine and the core engine is shut down for ramjet operation. In the preferred embodiment, the forward fan is allowed to windmill and powers a fuel pump connected thereto for providing fuel to a ram burner of the engine for ramjet operation.

REFERENCES:
patent: 3167911 (1965-02-01), Sandre
patent: 3238716 (1966-03-01), Sandre
patent: 3296800 (1967-01-01), Keenan et al.
patent: 3670964 (1972-06-01), Pederson
patent: 3677012 (1972-07-01), Batscha
patent: 3879941 (1975-04-01), Sargisson
patent: 4010608 (1977-03-01), Simmons
patent: 4039146 (1977-08-01), Wagenknecht
patent: 4043121 (1977-08-01), Thomas et al.
patent: 4060981 (1977-12-01), Hampton
patent: 4064692 (1977-12-01), Johnson et al.
patent: 4068471 (1978-01-01), Simmons
patent: 4080785 (1978-03-01), Koff et al.
patent: 4137708 (1979-02-01), Aspinwall et al.
patent: 4175384 (1979-11-01), Wagenknecht
patent: 4185457 (1980-01-01), Parker et al.
patent: 4193738 (1980-03-01), Landis, Jr. et al.
patent: 4222235 (1980-09-01), Adamson et al.
patent: 4813229 (1989-03-01), Simmons
patent: 4909031 (1990-03-01), Grieb
patent: 4919364 (1990-04-01), John et al.
D. Dusa, "Exhaust Systems and Turboramjet Propulsion for Mach 2.0 to 6.0 Aircraft," presented at University of Tennessee Space Institute on 6 Dec. 1988, cover and pp. 15 and 16.
GE Aircraft Engines, "Technology for Today and the Year 2000," Jun. 1987, tri-fold color brochure.
Blevins et al, American Institute of Aeronautics and Astronautics (AIAA), "Variable Cycle Concepts for High Mach Applications," paper AIAA-87-2103 cover and p. 5. Jun. 1987.
GE Aircraft Engines, "Turbine Engine Symposium," 1984, single page engine drawing.
S.Birch, Aerospace Engineering, "Sanger Update," Aug. 1989, pp. 81-83.
Aerospace America, May 1987, p. 8.

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