Variable specific thrust turbofan engine

Details Variable specific thrust turbofan engine Variable specific thrust turbofan engine

1992-11-24

1993-11-16

Vrablik, John J.

Power plants

Reaction motor

Interrelated reaction motors

602263, F02K 302

Patent

active

052612279

ABSTRACT:
An aircraft turbofan engine and method of operation effect variable specific thrust. The engine includes a fan disposed in a fan casing and a booster compressor disposed in a first flow splitter and powered by a core engine. A second flow splitter is disposed inside the fan casing and defines fan outer and inner ducts. The booster compressor includes at least one stage of rotor blades each having a shroud and an integral rotor flade extending radially outwardly therefrom into the fan inner duct. The fan outer duct includes a variable area first exhaust nozzle disposed at an aft end of the fan casing and is positionable in a first position to permit shifting of a portion of the fan air from the outer duct to the inner duct for flow between the flades to vary specific thrust of the engine.

REFERENCES:
patent: 3528246 (1970-09-01), Fischer
patent: 3729957 (1973-05-01), Petrie et al.
patent: 3867813 (1975-02-01), Leibach
patent: 4043121 (1977-08-01), Thomas et al.
patent: 4050242 (1977-09-01), Dusa
patent: 4055042 (1977-10-01), Colley
patent: 4080785 (1978-03-01), Koff
patent: 4288983 (1981-09-01), O'Rourke, Jr.
W. S. Willis, "Quiet Clean Short-Haul Experimental Engine (QCSEE) Final Report," Aug. 1979, pp. cover, 15, and 17.
General Electric Company, "Quite Clean Short-Haul Experimental Engine (QCSEE) UTW Fan Preliminary Design," Feb. 1975, pp: cover, 2 and 3.
General Electric Company, "Quiet Clean Short-Haul Experimental Engine (QCSEE) Preliminary Analyses and Design Report, vol. II" Oct. 1974, pp: cover, 465, 477, 478, 517, 522, and 523.
General Electric Company, "Quite Clean Short-Haul Experimental Engine (QCSEE) Preliminary Analyses and Design Report, vol. I," Oct. 1974, pp: cover, 13, 14, 17, 19, 140, 143, 151, and 183.

Affiliated with

Also associated with

Rating

Variable specific thrust turbofan engine does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Variable specific thrust turbofan engine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable specific thrust turbofan engine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-15056