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Governor stability of a propeller pitch controlled speed governor is improved by dynamically compensating a turbine engine speed error signal employed in determining fuel flow. The fuel flow requirement is a function of the dynamically compensated turbine engine speed error signal, an indicated air

Governor stability of a propeller pitch controlled speed governor is improved by dynamically compensating a turbine engine speed error signal employed in determining fuel flow. The fuel flow requirement is a function of the dynamically compensated turbine engine speed error signal, an indicated air speed signal, and a power lever angle signal.

대표청구항 ▼

Apparatus, for improving a performance stability of a speed governor of a variable pitch control for a propeller driven aircraft having a gas turbine engine with an electronic fuel control for regulating fuel flow to the gas turbine in dependance on a set point value of a power lever angle controlle

Apparatus, for improving a performance stability of a speed governor of a variable pitch control for a propeller driven aircraft having a gas turbine engine with an electronic fuel control for regulating fuel flow to the gas turbine in dependance on a set point value of a power lever angle controlled by an operator, comprising: sensor means, for providing sensed signals indicative of turbine engine speed, aircraft air speed, and power lever angle setting; signal summing means, for providing a turbine engine speed error signal as a difference magnitude between said turbine engine speed signal and a reference turbine engine speed signal presented thereto; signal processing means, responsive to said turbine engine speed error signal, and having memory means for storing signals including program signals defining an executable algorithm for multiplying said turbine engine speed error signal by a proportional gain signal to provide a dynamic compensation signal; and signal multiplying means, for presenting a fuel control signal, as a product magnitude of said air speed signal, said dynamic compensation signal, and said power lever angle signal, to the electronic fuel control to control the gas turbine engine torque and, thereby controlling propeller torque.