Lutronix works in the fields of Smart Bullets and UAV _ Unmanned aerial vehicles. The Lutronix Corporation built the Kolibri micro-helicopter (German for "Hummingbird") -- larger than the other DARPA MAV prototypes, with a weight of about 300 grams. The Kolibri was built as a cylinder with rotors at one or both ends, using vanes moved through the rotor airflow by piezoelectric actuators for flight control. It is powered by electric motors or a tiny, highly-efficient multi-fuel engine developed by a company named D-STAR - another SBIR Awardee..