General Electric Company

Thomas E Ekstrom

William I Rowen

Donald L Rexford

Richard L Koch

A gas turbine control for ameliorating the adverse affects of cyclic load applications to both single-shaft and two-shaft gas turbines is disclosed. During cyclic load conditions, air flow is governed to control the output of the gas turbine while fuel flow is controlled to hold the firing or exhaust temperatures substantially constant. Regular fuel flow governing during non-cyclic loading conditions is also provide

Cyclic load duty control for gas turbine

A gas turbine control for ameliorating the adverse affects of cyclic load applications to both single-shaft and two-shaft gas turbines is disclosed. During cyclic load conditions, air flow is governed to control the output of the gas turbine while fuel flow is controlled to hold the firing or exhaust temperatures substantially constant. Regular fuel flow governing during non-cyclic loading conditions is also provided.

A marine propulsion system includes a gas turbine, a generator, a motor and a fixed pitch propeller. Means are provided to operate the motor synchronously in the normal ahead and astern directions and to operate the motor asynchronously in the slow ahead and astern directions with the gas turbine operating at its idle setting. Means are also provided to brake the propeller before astern torque is applied when the power propulsion lever is rapidly moved from the normal ahead setting to the normal astern setting by operating the motor as a generator.

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Scotia, NY, United States of America

Thomas E Ekstrom