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为了抢占世界民机产业的制高点,维持美国的领导地位,美国航空航天局(NASA)开始着手对未来20~30年民机产业的长远发展作出规划,并将其按时间顺序分为“N+1”、“N+2”和“N+3”三个阶段,计划投入使用的时间分别为2015年、2020~2025年和2030~2035年。这三代民机规划中均包括亚声速和超声速飞机。以此“三步走”战略思想为指导,美国工业界在NASA的主导下,从2005年开始对未来超声速客机的概念方案及关键技术展开新一轮评估研究,目前相关工作已经取得很大进展,并获得了一定的技术成果。
In order to seize the commanding height of the civil aircraft industry in the world and maintain its leading position in the United States, NASA started to plan for the long-term development of civil aircraft industry in the next 20 to 30 years and to divide it into “N” 1 “,” N + 2 “and” N + 3 “. The planned times for putting into use are 2015, 2020-2025 and 2030-2035 respectively. These three generations of civil aircraft programs include subsonic and supersonic aircraft. Guided by the strategic thinking of ”Three Steps", the U.S. industry, under the leadership of NASA, started a new round of research on the concept and key technologies of the future supersonic passenger aircraft from 2005. At present, relevant work has been achieved Great progress, and get some technical achievements.