Emergency fuel system

Details Emergency fuel system Emergency fuel system

1981-01-22

1984-02-07

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

Combined with regulation of power output feature

F02C 928

Patent

active

044295286

ABSTRACT:
An emergency fuel control system for an aircraft engine, which emergency fuel control system comprises means for supplying emergency fuel to the engine such that the fuel supplied to the engine is proportional to engine speed and pressure, first fluidic means which is controlled by a pilot's throttle lever giving a throttle demand and which includes fluidic sensor inputs for limiting engine performance, second fluidic means which has an acceleration control for generating a signal pressure as a particular function of engine compressor ratio, a fluidic mixer for mixing an acceleration control signal and a pilot's control signal such that the pilot cannot demand more fuel than it is safe for the engine to accept, and a fluidic output device which receives signals from the fluidic mixer and which generates a signal which has substantially the same shape as the acceleration control signal but which is at a lower level and which is used to define the minimum amount of fuel that is safely required by the engine in order to maintain combustion of the engine.

REFERENCES:
patent: 2700872 (1955-02-01), Lee
patent: 2950596 (1960-08-01), Haase et al.
patent: 2966140 (1960-12-01), Dungan et al.

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