In 1990, with the advancement of technology it is developing unmanned aircraft to a smaller size. It is interesting that the unmanned aircraft of the Air Force more unmanned aircraft, or UAVs that can be used as a weapon to fight. It also helps to reduce the risk and the loss of the pilot. Production budget The system is not very sophisticated, smaller detection difficult. High flexibility During the flight, depending on the pilot's fatigue. Because the external pilot (External Pilot), so the unmanned aircraft has been developed to be more modern. And more variety in missions.
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