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Monday 26 October 2026 · 1434Z EGLL · KJFK · OMDB · VHHH Member log in →
Article — May 30, 2026 · 5 min study Members

Hermeus Breaks Sound Barrier with Unmanned Jet at Mach 1.21

Hermeus flew its Quarterhorse Mk 2.1 to Mach 1.21 on 26 May 2026, becoming the first private US company to break the sound barrier.

Hermeus Breaks Sound Barrier with Unmanned Jet at Mach 1.21
FIG. 01 A private US company flew faster than the speed of sound over New Mexico on 26 May 2026.Archive

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