Dynamic compensation to n-dot schedules

Details Dynamic compensation to n-dot schedules Dynamic compensation to n-dot schedules

1989-09-20

1991-07-09

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

Multiple fluid-operated motors

60 39281, F02C 928

Patent

active

050294415

ABSTRACT:
The speed of the gas generator of a gas turbine engine is measured and summed with the rate of change of the gas generator speed and the sum is input to a schedule which outputs desired engine acceleration as a function of gas generator speed, the input thereby providing an anticipation to the schedule output so as to result in a dynamic shift of the schedule. In an exemplary embodiment of the invention in a helicopter fuel control, the amount of anticipation provided by the schedule input allows the fuel control to accurately control the engine to the desired acceleration schedule.

REFERENCES:
patent: 4188781 (1980-02-01), Johnson et al.
patent: 4423593 (1984-01-01), Zayranski et al.
patent: 4470118 (1984-09-01), Morrison
patent: 4543782 (1985-10-01), Fitzmaurice

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