National Interest on MSN7mon
SR-91 Aurora: The Mach 5 Spy Plane Was Never Real (Just a Rumor)The government studied proposals for a manned, hypersonic, stealth spy plane capable of traveling at a speed of up to mach 5.
Interesting Engineering on MSN14d
Mach 5+ speed: Germany plans hypersonic craft to counter China, shake army, space techGermany’s Federal Office of Bundeswehr Equipment, Information Technology, and In-Service Support (BAAINBw) has officially ...
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