This report documents the design and development of a fail-safe electro-mechanical timer (EMT) compatible with the requirements of MIL-STD-1316 and suitable for missile and bomb fuze applications. The EMT provides the accuracy and versatility of an electronic timer while assuring the safety of a mechanically out-of-line, interrupted firing train. This innovative design provides delayed mechanical arming without requiring stored energy devices. The EMT employs pulsed miniature solenoids which convert electrical ...
In order to improve the accuracy of retarded bombs released from high altitude, the MAU-146 A/B Mechanical Set Band Release Timer was developed which allows the bomb to free fall in a low drag configuration for a pre-determined time and then forcefully open the retarder fins. The timer was designed and tested during a six-month period. The device is compatible with the retarder mechanisms of the MAU-91, MK-15, and the ...