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“黑鸟”是美国SR-71型间谍侦察机的别称,其最大飞行速度为音速3.2倍,最大飞行高度达85000英尺,它在美国空军服役了近四分之一世纪。其飞行高度超过巳知的一种飞得极高的飞机英里,巡航速度将比性能最好的喷气战斗机的最大加力速度快60%——并且几乎能对雷达产主隐身作用。研制这种飞机是洛克希德飞机公司天才
“Blackbird” is another name for the U.S. SR-71 spy reconnaissance aircraft. Its maximum flight speed is 3.2 times the speed of sound and the maximum flight altitude is 85,000 feet. It has served in the United States Air Force for nearly a quarter of a century. It flips more than a mile of known high-flying aircraft and will cruise at 60% faster than the maximum jerk in the best-performing jet fighter - and will almost be invisible to the radar owner. The development of this aircraft is Lockheed aircraft company genius