Hermeus flies Quarterhorse Mk 2.1 — first uncrewed supersonic demonstrator flight with Pratt & Whitney F100‑229
Hermeus completed the first flight of its unmanned Quarterhorse Mk 2.1 supersonic demonstrator, powered by a Pratt & Whitney F100‑229 (F‑16) engine. The flight — the company’s second new prototype to fly in nine months — advances validation of high‑speed unmanned flight systems for defence applications.