The fastest air-breathing vehicle ever built was the NASA X-43. Only three of these aircraft were built, with one being destroyed and two operating successfully. The X-43 testbed aircraft measured 12 ...
美国国家航空航天局 (NASA)和日本宇宙航空研究开发机构 (JAXA)将一架手掌大小的 X-59 模型发射过 1.4 马赫的风洞，收集证据证明其尖锐的机鼻和定制的机翼可以将冲击波散射成较小的“砰砰”声。 NASA的X-59静音超音速技术飞机（QueSST）旨在以超音速飞行，且不会 ...
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