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Why Was The Mach 4.3 Ramjet Scrapped?

A decade before the SR-71 first flew, the military had a Mach 4.3 capable Ramjet created to test its own air defenses. It was so effective, it was cancelled to avoid embarrassing the military's own air defenses any further. The man who designed it went on to create the SR-71 spyplane #PopNews


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