Fuze Gear-Train Analysis

摘要

This report documents the development of tools needed to compare the efficiency of fuze-related gear trains designed to operate in a spin environment. Computer models have been developed for two and three pass step-up designs with clock (ogival) and involute tooth shapes. Using appropriate moment input-output relationships, the computer programs develop point and cycle efficiency for each type of gear train. Pivot friction partially caused by centrifugal force on the gear and pinion combinations during spin, and tooth-to-tooth contact friction are considered. All models allow a variety of parameter variations. (Author)