AUTOMATIC FUEL METERING DEVICE FOR POWER PLANTS OF FLYING VEHICLES Russian patent published in 1999 - IPC

FIELD: ramjet engines of flying vehicles. SUBSTANCE: device has newly introduced air pressure warning unit 5, electronic controller 6, first and second electromechanical converters 7 and 8, differential-pressure valve 17, and constant- pressure valve 15; first and second bellows, first and second pneumatic dividers are coupled with air pressure warning unit which is connected to electronic controller coupled with first and second electromechanical converters; first converter is coupled with first controller through nozzle-flapper valve and through the latter, with servo piston of throttle needle; second electromechanical converter is coupled with second nozzle-flapper control valve connected to differential-pressure valve which, in its turn, is coupled with throttle needle 14 and through the latter, with combustion chamber injectors. Hydraulic system is fed from turbine-driven pump 16 coupled through constant-pressure valve with servo piston of throttle needle 1 and with differential-pressure valve. EFFECT: enlarged functional capabilities of fuel supply system. 1 dwg