Power plants – Reaction motor – Liquid oxidizer
Patent
1988-10-12
1991-04-02
Stout, Donald E.
Power plants
Reaction motor
Liquid oxidizer
60260, F02K 950
Patent
active
050037722
ABSTRACT:
A propulsion system (10) having a propulsion engine (18) which combusts propellant received from a storage tank (12) in which a portion (14) of the tank contains propellant in a liquid state and in which an ullage (16) in a remaining portion of the tank contains the propellant in a gaseous state is disclosed. A first propellant circuit couples liquid propellant stored in the portion of the tank storing the propellant in a liquid state to an evaporator (22) for gasifying the liquid propellant. A second propellant circuit couples the gaseous propellant from the evaporator to the propulsion engine for combustion by the engine and to the ullage. A turbine (24) is disposed in the second propellant circuit coupling the gaseous propellant from the evaporator to the propulsion engine and to the ullage between the evaporator and the ullage for providing a power takeoff (26) powered by energy of the gaseous propellant flowing in the second circuit. The invention achieves a weight savings over the prior art auxiliary power unit and utilizes energy for direction control which previously had not been used for any purpose.
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Stout Donald E.
Sundstrand Corporation
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