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US 3,937,014 AGranted
Electric control circuit arrangements for gas turbine engines
AssigneeJoseph Lucas (Industries) Limited
InventorAnthony Brian Plant
Life of this patent
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AssigneeJoseph Lucas (Industries) Limited
InventorAnthony Brian Plant
Estimating the term…
A control circuit arrangement for a gas turbine engine has first and second identical control circuits which are responsive to groups of input signals to provide nominally identical first and second output signals. It is arranged that input signals to the first control circuit are nominally identical with corresponding input signals to the second control circuit. Means are provided, responsive to malfunction of either one of the first and second control circuits, to render the malfunctioning circuit inoperative and to render the other of the control circuits operative. A third control circuit is responsive to at least one pair of corresponding input signals to the first and second circuits, to provide a third output signal to the engine. The first, second and third output signals do not control the engine reheat system, and the arrangement may include a fourth control circuit for controlling this reheat system.
An electric control circuit arrangement for a gas turbine engine, comprising a first control circuit responsive to a plurality of first input signals to provide first output control signals, a second control circuit responsive to a plurality of second input signals to provide second output control signals which are nominally identical with said first output control signals, corresponding ones of said first and second input signals being nominally indentical, a third control circuit responsive to at least one of said input signals to provide a third output control signal, and selector means for rendering either said first or said second control circuit operative, said selector means being responsive to malfunction of either one of said first and second control circuits to render the malfunctioning one of said circuits inoperative and to render the other of said circuits operative.
An electric control circuit arrangement for a gas turbine engine, comprising a first control circuit responsive to a plurality of first input signals to provide first output control signals, a second control circuit responsive to a plurality of second input signals to provide second output control signals which are nominally identical with said first output control signals, corresponding ones of said first and second input signals being nominally identical, a third control circuit responsive to at least one of said input signals to provide a third output control signal and also being responsive to a plurality of nominally identical third input signals to provide a fourth output control signal, said first and second control circuits also being responsive to said fourth output signal, and selector means for rendering either said first or said second control circuit operative, said selector means being responsive to malfunction of either one of said first and second control circuits to render the malfunctioning one of said circuits inoperative and to render the other of said circuits operative.
Dependencies are inferred from the claim text.