Downloaded from https://www.everyspec.com MIL-STD-1808C w/CHANGE 1 SYSTEM SUB-SYSTEM TITLE DEFINITION 73 ENGINE FUEL AND CONTROL For turbine engines, the subsystem components and associated mechanical systems or electrical circuits that furnish or control fuel to the engine beyond the main fuel quick disconnect and thrust augmenter, fuel flow rate sensing, transmitting, and indicating units whether the units are before or beyond the quick disconnect.
Includes coordinator or equivalent, engine driven fuel pump and filter assembly, main and thrust augmenter fuel controls, electronic temperature datum control, temperature datum valve, fuel manifold, fuel nozzles, fuel enrichment system, speed sensitive switch, relay box assembly, solenoid drip valve, burner drain valve, etc. For reciprocating engines, the subsystem components that deliver metered fuel and air to the engine. The fuel portion includes the carburetor/master control from the inlet side to the discharge nozzles, injection pumps, carburetors, injection nozzles, and fuel primer. The air portion includes units from the scoop inlet to the vapor vent return, and the impeller chamber.
Does not include engine driven fuel pumps (see System 28, FUEL). 00 GENERAL 10 DISTRIBUTION The portion of the system, from the main quick disconnect to the engine, that distributes fuel to the engine burner section and the thrust augmenter. Includes plumbing, pumps, temperature regulators, valves, filters, manifold, nozzles, etc. Does not include the main or thrust augmenter fuel control. 20 CONTROLLING The portion of the system that meters fuel to the engine and the thrust augmenter. Includes hydromechanical or electronic fuel control, levers, cables, pulleys, linkages, sensors, valves, etc.
30 INDICATING The portion of the system used to indicate the flow rate, temperature, and pressure of the fuel. Includes transmitters, indicators, wiring, etc. Does not include indication if accomplished as part of an integrated engine instrument system (see System 77, ENGINE INDICATING). 84