Hypersonic Air Force One: Startup Hermeus Tests Mach 5 Aircraft Engine

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Click the original article link here >>> Hypersonic Air Force One: Startup Hermeus tests Mach 5 aircraft engine – Business Insider

An aerospace startup called Hermeus just won a US Air Force contract to develop a presidential jet that can travel at Mach 5, or five times the speed of sound.

businessinsider.com

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