Power plants – Reaction motor – Method of operation
Patent
1989-12-14
1991-05-14
Stout, Donald E.
Power plants
Reaction motor
Method of operation
60259, 60260, 1375991, F02K 942
Patent
active
050145070
ABSTRACT:
A propulsion engine (12) which combusts propellant received from the storage tank (24) in which a portion (28) of the tank contains propellant in the liquid state and in which an ullage (26) in a remaining portion of the tank contains the propellant in a gaseous state including a first propellant circuit (34) coupling liquid propellant stored in the tank to an evaporator (30); a second propellant circuit (36), coupling the gaseous propellant from the evaporator to the propulsion engine combustor and to the ullage; at least one power generating device (14 and 16) disposed in the second propellant circuit between the evaporator and the ullage, for providing a power output from energy of the gaseous propellant flowing in the second propellant circuit controlled by at least one control valve controlling a flow of gaseous propellant to the at least one device under the control of at least one valve control signal; a bypass circuit (40) coupled in parallel with the at least one power generating device containing a bypass valve (42) controlling flow of gaseous propellant through the bypass circuit from the evaporator to the ullage in response to a bypass valve control signal; and a controller (44) coupled to the bypass valve and the at least one control valve, for generating the valve control signal controlling the flow of gaseous propellant through the valves to produce a controlled mass flow of gaseous propellant into the ullage independent of variation of a mass of gas flow through the valves.
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Reynolds Richard W.
Rice John N.
Stout Donald E.
Sundstrand Corporation
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