Key Points and Summary - Decades before the rumored SR-72 "Darkstar," America had already conquered hypersonic flight with the X-15 rocket plane. -In 1967, this remarkable experimental aircraft, ...
An aircraft capable of hitting 4,520 mph (nearly seven times the speed of sound) is ludicrous to even think about, but the North American X-15 achieved this, defying comparison to any other aircraft ...
"A unique Haynes Manual, providing fascinating technical insight into the development and use of rocket planes, focusing on the iconic X-15, which carried out much of the development work for the ...
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