Downloaded from https://www.everyspec.com MIL-STD-1808C w/CHANGE 1 SYSTEM SUB-SYSTEM TITLE DEFINITION 81 TURBINES For reciprocating engines only. The subsystem components that include Power Recovery Turbine (PRT) assembly and turbo/super-charger unit when external to the engine. 00 GENERAL 10 POWER RECOVERY The portion of the system that includes turbines that extract energy from the exhaust gases and are coupled to the crankshaft. 20 TURBO/SUPER- CHARGER The portion of the system that includes turbines that extract energy from the exhaust gases and drive an air compressor. 92