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2001年7月30日,美国诺斯罗普·格鲁曼公司向公众展示了自行研制的“飞马”无人机(见本刊2001年9月下半月版总第14期赠卡)。该机美国空军编号为X-47A,主要由复合材料制成,翼展8.42米,机长8.45米,机高1.86米,重约2.5吨,可以携带450公斤的载荷,最大过载3g,最大飞行高度1.1万米。 X-47A将作为一架技术验证机,进行一系列的飞行试验,研究有关舰载无人机的空气动力性能。在它的试飞基础上,诺斯罗普·格鲁曼公司将研制一种海军型无人战斗机(UCAV-N),编号为X-47B。X-47B的结构将更加坚固,载荷能力将达到900公公斤,续航时间12小时,随过载的能力也更强。
On July 30, 2001, Northrop Grumman Corporation of the United States demonstrated its own “Pegasus” UAV to the public (see the magazine's 14th issue of the second half of September 2001). The aircraft USAF number X-47A, mainly made of composite materials, wingspan 8.42 meters, 8.45 meters captain, 1.86 meters high, weighing about 2.5 tons, can carry 450 kg load, the maximum overload 3g, the maximum flight Height of 11,000 meters. The X-47A will be used as a technology validation machine to conduct a series of flight tests to study the aerodynamic performance of a shipborne UAV. Based on its test flights, Northrop Grumman will develop a naval unmanned combat aircraft (UCAV-N), number X-47B. X-47B will be more robust structure, load capacity will reach 900 kg, life time of 12 hours, with overload capacity is also stronger.