Integrated aerofin/thrust vector control for tactical missiles

Abstract

Because of increased enemy threat and reduced defense budget, the need exists for higher performance, multiple-mission tactical missile systems. Systems studies were performed that show pulse motors and integrated aerofin/thrust vector control enhance flexibility, performance, and enable reduced-span aerofins for higher armament loading on aircraft. Trade studies resulted in the selection of a movable nozzle with an elastomeric flexible bearing and electromechanical actuators. Actuator performance requirements were determined, and actuators were designed, built, and demonstrated on bench test hardware. The actuators incorporate low-inertia brushless dc motors and a unique drive train mechanism in a low-cost, lightweight, compact package. The demonstrated performance meets the requirements of 15-deg thrust vector angle, 400-deg/s slew rate, and 45-Hz bandwidth. Development of the four-axis fin control, thermal batteries, flightweight electronics, and flexible bearing is ongoing.