Electronic Thermally Initiated Venting System (ETIVS) Trigger and Thermal Sensor

Current Thermally Initiated Venting Systems (TIVS) consist of a thermal sensor, trigger, out-of-line blocking device, initiator, transfer energetic, and linear-shaped charge. TIVS reduce the reaction violence of munitions exposed to cook-off events by scoring the case of the rocket motor, not penetrating the case and igniting the propellant. The TIVS trigger should function when the rocket motor is placed in extreme temperature conditions that cause it to cook-off. Technologies needed to implement an ETIVS trigger and thermal sensor into a compact device capable of controlling the initiation of energetic materials are desired to increase the flexibility in application, safety and reliability of state-of-the-art ETIVS designs. Nalas proposes integration and implementation of advanced technologies to address the presented safety requirements and performance specifications. Use of thermoelectric generators (TEG) is proposed to serve as both an energy harvesting device and temperature sensor. The circuit will be designed to leverage power output and a second temperature monitoring device to enable thermal loading on the system to power the mitigation device. Modeling will be utilized to determine available power from TEGs located on the case system. Design considerations include requirements to meet form factor, withstand environmental conditions, and pass Insensitive Munitions testing