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US 3,939,650 AGranted
Operational circuitry for use in a gas turbine engine control system
AssigneeNissan Motor Co., Ltd.
InventorsTakane Itoh, Takao Kamide
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Abstract
A mathematical expression is converted and approximations applied to simplify same and thus circuitry which modifies an electrical signal representing a gas temperature into another one.
Claims1
An operational electronic circuitry for use in a gas turbine engine control system for modifying a first signal into a second signal with respect to an actual ambient temperature, said first signal representing an optimum gas temperature at an inlet of a compressor turbine under a condition of a standard average engine ambient temperature, comprising:
- first means for receiving said first signal to amplify it by a factor of 273/T.sub.sd and to generate a signal according to the amplification, where T.sub.sd is a standard average ambient temperature in degrees absolute;
- second means for sensing said actual ambient temperature to generate a signal representing it in degrees absolute;
- third means for receiving said signal from said second means to amplify it by a factor of T.sub.2sm /T.sub.sd and to generate a signal in proportion thereto, where T.sub.2sm is a median of values of said first signal;
- and
- fourth means for summing said signals from said first and third means to develop said second signal.
2 more elements
Dependencies are inferred from the claim text.