MIL-T-5091, MILITARY SPECIFICATION: TRANSMISSION, POWER, CONSTANT RATIO, GENERAL SPECIFICATION (AIRCRAFT USE) (01-DEC-1949) [NO S/S DOCUMENT]

MIL-T-5091, MILITARY SPECIFICATION: TRANSMISSION, POWER, CONSTANT RATIO, GENERAL SPECIFICATION (AIRCRAFT USE) (01-DEC-1949) [NO S/S DOCUMENT]., This specification covers constant ratio power transmissions for driving aircraft accessories, remotely from aircraft engines, gear boxes, or auxiliary engines.