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今年2月18日,俄罗斯在“安全-2004”大规模军事演习结束时,有意透露其在演习中试验了一种新型可变轨高超声速战略导弹弹头。正当人们纷纷猜测的时候,美国航空航天局又宣布,它在3月27日成功试验了 X-43A 型高超声速无人机。这种飞机在试验中达到了音速的7倍,从而打破了全球超音速燃烧冲压式喷气发动机以往的所有飞行纪录。这使人们意识到高超声速战略武器已经成为美俄新一轮技术竞赛的切入点。
On February 18 this year, Russia deliberately disclosed that it was experimenting with a new type of variable-gauge hypersonic strategic missile warhead at the end of the “Security-2004” large-scale military exercise. As people guessed, NASA announced it successfully tested the X-43A supersonic UAV on March 27. The aircraft reached seven times the speed of sound during the test, breaking all the previous flying records of the global supersonic combustion ramjet. This made people realize that supersonic strategic weapons have become the entry points for the new round of U.S.-Russia technology competition.