In May, 2025, hypersonic plane developer Hermeus flew its Quarterhorse Mk 1 prototype. It flew at Edwards Air Force Base. They are showing rapid, iterative development. They got a flying prototype in 20 months. It was 204 days from the completed design to the flying prototype. The Quarterhouse Mk2 that will fly at Mach 3 ...

Read more

---

Link :
https://www.nextbigfuture.com/2025/07/hermeus-rapid-iteration-for-hypersonic-plane-development.html