Product Improvement Program for the M577 Fuze. Volume 4. Redesigned Timer Lever Assembly

摘要

The objective of this project was to design a timer lever assembly which eliminates the lever staff and pallet supports. A design was conceived which combined the aluminum lever staff and pallets supports with the steel lever staff and pallet pins. Because of the required staking operation, the hardness of the lever staff and pallet pins had to be decreased from the current design. Laboratory and environmental testing were performed with satisfactory results. However, after ballistic testing, it was determined the pallet pins were not hard enough to withstand the forces in the 155mm, Zone 8 (203 Charge), weapon without bending and affecting the timing accuracy. This design was then dropped from further consideration.