Downloaded from https://www.everyspec.com MIL-STD-1808C w/CHANGE 1 SYSTEM SUB-SYSTEM TITLE DEFINITION 61 PROPELLERS/ PROPULSORS The subsystem components that include the complete mechanical or electrical propeller, pumps, motors, governor, alternators, and the components external to or integral with the engine used to control the propeller blade angle. Includes propeller spinner, synchronizers, propulsor duct assemblies, aerodynamic fairing of mechanical components, stators, vectoring systems, etc. 00 GENERAL 10 PROPELLER ASSEMBLY The portion of the system that rotates, except the engine propeller shaft. Includes blades, dome, hub, spinner, slip ring, deicer boot, distributor valve, etc.
20 CONTROLLING The portion of the system that controls propeller blade pitch such as governors, synchronizers, switches, wiring, cables, levers, etc. Also includes those components for the propulsor vector drive system. Includes flight deck control, drive motors, gearboxes, drive shafts, synchronizing shaft, etc. Does not include any parts that rotate with the propeller assembly. 30 BRAKING The portion of the system used to decrease rundown time or stop propeller rotation during engine power-off conditions. Includes brake mechanisms, levers, pulleys, cables, switches, wiring, plumbing, etc.
40 INDICATING The portion of the system used to indicate operation or activation of propeller/propulsor systems. Includes lights, switches, wiring, etc. 50 PROPULSOR DUCT The portion of the system covering the complete duct assembly including vector drive attachment, fairings, stators, gearbox covers, etc. 70