Propulsion system for a vertical and short takeoff and landing a

Details Propulsion system for a vertical and short takeoff and landing a Propulsion system for a vertical and short takeoff and landing a

1990-05-07

1993-05-11

Barefoot, Galen

Aeronautics and astronautics

Aircraft, heavier-than-air

Airplane and fluid sustained

244 23D, 244 52, 244 125, B64C 2900

Patent

active

052094286

ABSTRACT:
The invention is a propulsion system for a V/STOL type aircraft. In detail, the invention comprises a turbofan engine including a fan section, compressor section, combustion section, turbine section and nozzle section. The turbine section comprises a low-pressure turbine portion coupled to and driving the fan section and a high-pressure turbine portion coupled to and driving the compressor section. A lift fan is coupled to the fan section by means of a drive shaft. A clutch is incorporated for decoupling the lift fan from the fan section. A mechanism is incorporated for extracting additional power from the low-pressure turbine portion of the turbine section to drive the lift fan that augments the basic engine thrust for V/STOL operation.

REFERENCES:
patent: 2918232 (1959-12-01), Lippisch
patent: 2988301 (1961-06-01), Fletcher
patent: 3186165 (1965-06-01), Edkins
patent: 3380660 (1968-04-01), Markowski
patent: 3381474 (1968-05-01), Gist
patent: 3907219 (1975-09-01), Pharris
patent: 4326686 (1982-04-01), Runge
patent: 4474345 (1984-10-01), Musgrove
patent: 4587806 (1986-05-01), Madden
patent: 4660767 (1987-04-01), Scrace
patent: 4791783 (1988-12-01), Neitzel

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