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要大幅提升25年后投入运营的民用飞机的清洁和安静度,达到更加环保的目标,就需要尽快研发出成熟的、能支撑这一代民用飞机发展目标的关键技术。当然,从开发阶段到具有较高技术成熟度的实用阶段,这些关键技术的发展还有很长的路要走。目前,美国的一些企业根据NASA提出的N+3代客机发展计划,开始了第一阶段的研发工作。
To significantly increase the cleanliness and quietness of civilian aircraft put into operation 25 years from now to achieve a more environmentally friendly target requires the development of a mature key technology that will support the development goals of this generation of civilian aircraft as soon as possible. Of course, there is still a long way to go to develop these key technologies from the development stage to the practical stage with high technological maturity. At present, some companies in the United States started the first-phase R & D work based on NASA’s N + 3 passenger plane development plan.