Air Force Technology on MSN
Hermeus’ Quarterhorse Mk 2.1 completes first supersonic flight
Quarterhorse Mk 2.1 flew supersonic than three months after its first flight and 364 days after Mk 1's debut.
The venerable Cold War SR-71 Blackbird may be looking nervously at its laurels after Hermeus's latest Quarterhorse Mk 2.1 ...
Hermeus, the defense aviation company building the world's fastest aircraft, today announced its Quarterhorse Mk 2.1 successfully completed its first supersonic flight, reaching a top speed of Mach 1.
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