Hermeus News

Founded in 2018 and headquartered in Atlanta, Georgia, Hermeus develops hypersonic aircraft and propulsion systems for defence and future high-speed aviation. Its development roadmap progresses from the Quarterhorse demonstrator to the Darkhorse uncrewed aircraft and ultimately Halcyon, a planned passenger aircraft. Central to its approach is the Chimera turbine-based combined-cycle engine, integrating a turbine engine with ramjet technology for operation from take-off to hypersonic speeds. Hermeus combines rapid aircraft development, autonomous systems, propulsion engineering and advanced manufacturing, primarily supporting US defence programmes while developing technology for future commercial hypersonic travel.

www.hermeus.com

10 SEP '26

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Hermeus Unveils Ramjet-X for Low-Cost Sustained High-Mach Flight Testing

Expendable vehicle launches from reusable Quarterhorse aircraft, enabling payload testing and Flight Test as a Service with integrated high-speed infrastructure.

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23 JAN '25

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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.

Read more…

Hermeus Unveils Ramjet-X for Low-Cost Sustained High-Mach Flight Testing

Expendable vehicle launches from reusable Quarterhorse aircraft, enabling payload testing and Flight Test as a Service with integrated high-speed infrastructure.

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.

International