Courtesy Pratt & Whitney Rocketdyne
The X-1 scramjet engine is subjected to the hellfire of a test tunnel at NASA's Langley Research Center to simulate the intense heat and friction of hypersonic flight.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.
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