Method and apparatus for acceleration limiting a gas turbine eng

Details Method and apparatus for acceleration limiting a gas turbine eng Method and apparatus for acceleration limiting a gas turbine eng

1983-07-01

1986-06-10

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

Combined with regulation of power output feature

F02C 928

Patent

active

045935238

ABSTRACT:
A method and apparatus for acceleration limiting a gas turbine engine (10) is disclosed. A proportional fuel control (11) regulates the fuel flow Wf from a hydromechanical unit (36) based upon an error signal E representing the difference between a demanded speed signal Nd and an actual speed signal Ng. The demanded speed signal Nd is generated by an integrator (32) as the time integral of the difference between the demanded signal Nd and a scheduled speed signal Ngs. Additionally, the difference signal is limited between an upper limit A1 and a lower limit D1 prior to the integration by a comparator (28) and a limiter circuit (30). The acceleration limit, A1 is generated as a function of a nondimensional parameter ratio (dN/dt.times.N)/Wf.

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