Aircraft propulsion system using air liquefaction and storage

Details Aircraft propulsion system using air liquefaction and storage Aircraft propulsion system using air liquefaction and storage

1989-12-29

1992-04-21

Barefoot, Galen

Aeronautics and astronautics

Aircraft power plants

High altitude

244 53R, 244 62, B64D 2700

Patent

active

051060353

ABSTRACT:
An aircraft propulsion system includes a propeller for propelling the aircraft, an electric motor for driving the propeller, and an electrochemical fuel cell for receiving an oxidizer and providing propulsion power to the electric motor. An air liquefaction system is used for receiving ambient air and providing oxidizer to the fuel cell. Preferably, at low altitude, the air liquefaction system provides oxidizer to the fuel cell and to an oxidizer fuel tank. Then, during high altitude excursions, the oxidizer is provided to the fuel cell from the oxidizer fuel tank. When the oxidizer tank is empty, the aircraft returns to a lower altitude where extraction of oxidizer from the atmosphere is resumed.

REFERENCES:
patent: 3748180 (1973-07-01), Clausi et al.
patent: 4697761 (1987-10-01), Long
Space Plane Grows into Family of Concepts, Larry Booda, Aviation Week, Jun. 19, 1961, pp. 54, 55, 59, 61, 62.

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