1996年夏季,罗克威尔飞机公司、美国国家航空和宇航局及洛杉矶加州大学的工程师一直在测试他们研制的首架无人驾驶飞行器的性能。这种新式飞机的机翼展长达14.3米,是采用铝和石墨为机架,以聚酯薄膜蒙皮,重仅45.5公斤。太阳能电池板占机翼的90％,能采集足够的太阳能用于驱动机 In the summer of 1996, engineers at Rockwell Aircraft Corporation, the National Aeronautics and Space Administration and the University of California, Los Angeles, have been testing the performance of the first unmanned aircraft they developed. The new aircraft wingspan up to 14.3 meters, is the use of aluminum and graphite frame, polyester film skin, weighs only 45.5 kg. Solar panels make up 90% of the wing and can collect enough solar energy for the driver