Downloaded from https://www.everyspec.com MIL-STD-1808C w/CHANGE 1 SYSTEM SUB-SYSTEM TITLE DEFINITION 78 ENGINE EXHAUST The subsystem components that direct engine exhaust gases overboard. For turbine engines, includes units external to the basic engine such as thrust reverser and noise suppressor. For reciprocating engines, includes augmenters, stacks, clamps, etc. Excludes exhaust driven turbines. 00 GENERAL 10 COLLECTOR/NOZ- ZLE The portion of the system that collects exhaust gases from the cylinders or turbines and conducts them overboard.
Includes collector rings, exhaust, and thrust augmenter ducts (unless included in Subsystem 50, AUGMENTER), variable nozzles, actuators, plumbing, linkages, wiring, position indicators, warning systems, etc. Does not include power recovery turbines, turbo/superchargers, noise suppressors, or thrust reversers when they are not an integral part of the nozzle system. 20 NOISE SUPPRESSOR The portion of the system that reduces the noise generated by the exhaust gases. Includes pipes, baffles, shields, actuators, plumbing, linkages, wiring, position indicators, warning systems, etc. Use Subsystem 10, COLLECTOR/NOZZLE, when an integral part of the nozzle system.
30 THRUST REVERSER The portion of the system used to change the direction of the exhaust gases for reverse thrust. Includes clamshells, linkages, levers, actuators, plumbing, wiring, position indicators, warning systems, etc. Use Subsystem 10, COLLECTOR/NOZZLE, when an integral part of nozzle system. 40 SUPPLEMENTARY AIR The portion of the system that varies and controls supplementary air flow to the exhaust system. Includes tertiary air doors, actuators, linkages, springs, plumbing, wiring, position indicators, warning systems, etc. 50 AUGMENTER The portion of the system that provides additional thrust for takeoff and in flight at the command of the pilot.
Includes liners, rings, ducts, actuators, linkages, wiring, indicators, warning systems, etc. Does not include augmentation external to the power plant (see System 84, PROPULSION AUGMENTATION). 89