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Hermeus Darkhorse

29/05/2025News:
Quarterhorse Mk 1 flight operations underway at Edwards AFB as part of Hermeus’ hypersonic development roadmap.

Quarterhorse Mk 1 takes flight at Edwards as Hermeus pushes hypersonic pace

Hermeus completed testing of its uncrewed prototype in California and has begun integrating data into the forthcoming Quarterhorse Mk 2.

09/01/2025News:
Testing the Pratt & Whitney F100 engine.

Hermeus launches HEAT testing facility for hypersonic engines

The facility aims to reduce testing costs and capacity constraints, while supporting the development of next-generation hypersonic aircraft.

19/12/2024News:
Quarterhorse Mk 1 on Edwards’ historic lakebed.

Quarterhorse Mk1 nears flight readiness at Edwards

The next iteration of Quarterhorse, Mk 2, is actively being built in Hermeus’ Atlanta factory. This aircraft features a much larger engine, the Pratt & Whitney F100, and will fly at supersonic speeds.

12/09/2024News:
Quarterhorse Mk 1 in the hush house, one of several buildings at HEAT.

Hermeus breaks ground on hypersonic test facility in Jacksonville

The HEAT facility will provide continuous high flow rate, high enthalpy and low-pressure conditions required for high-supersonic and low-hypersonic flight modelling.

15/05/2024News:
The testing marks the first major engine milestone for Hermeus’ supersonic Quarterhorse Mk 2 aircraft.

Hermeus begins precooler testing with P&W F100 engine

The precooler increases the max speed of the turbine engine by lowering the temperature of incoming air. It is intended for Hermeus' Quarterhorse Mk 2 aircraft.

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