Hybrid morphing actuators

A novel hybrid actuator is proposed where fast response small amplitude actuator is combined with a slower high authority actuator to control the flight path of a gun launched munition. The focus of the effort will be to develop a g-hardened hybrid actuator that can be implemented at low cost to existing gun launched rounds. The fast response actuator will be based on the SmartAct technology developed for the U.S. Army and the slower high authority actuator will utilize bi-stable snap-through shape memory alloy actuators to minimize power. In Phase I, systems studies will be performed to identify requirements for a suite of munitions in the 120mm to 150mm class of munitions including rocket propelled grenades. Trade studies will evaluate various concepts against performance metrics such as weight, response time, power, enhanced flight envelope capability, cost and reliabilityPhase II will develop and fabricate a proof of flight control enhancement concept model. Wind-tunnel tests will be used to evaluate and characterize performance.