M577 Fuze Product Improvement Program Simplified Timer Stop and Increasing Timer Torque.
Final rept. Feb 81-Nov 82,
BULOVA SYSTEMS AND INSTRUMENTS CORP VALLEY STREAM N Y
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The object of task 1 to reduce production costs by simplifying the timer stop, was accomplished by replacing the tumbler stop with a threaded sleeve at an estimated saving of 0.176 to 0.220 per unit. In conjunction with the development of the sleeve for the simplified stop system, the modification of the trigger and lower fuze body was investigated to improve structural support during high-g setback. Incorporation of these modifications with the revised stop system would result in a combined cost saving of 0.150 to 0.194 per unit. Task 2 focused on reduction production fallout by increasing timer torque. A bridled mainspring with improved characteristics at the 100- to 200-second range of timer operation was designed, but the resulting 70 increase in cost could not be justified. A further effort at improving torque transmission treating the gear train with Emralon proved ineffective in that it did not improve the performance of the timer.
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