World's fastest plane reached 7,000mph — only three have ever been built
As military tech evolves, one jet from the past remains unmatched in speed. Discover the story of this legendary aircraft ...
来自MSN6 个月
X-43A: The Close to Mach 10 Hypersonic Plane NASA Ditched
NASA married a scramjet to an experimental plane, called the X-43A Hyper-X. The X-43 began its existence as a concept in a NASA wind tunnel in 1996. It was considered a risky investment because no ...