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Hermeus Develops Ramjet-X Test Vehicle for High-Mach Flight

Hermeus announced the development of Ramjet-X, an expendable test vehicle. The aim is to make testing of high-Mach airbreathing flight cheaper, faster, and more repeatable.

9 September 2026
Hermeus Develops Ramjet-X Test Vehicle for High-Mach Flight

Hermeus announced on Thursday it is developing Ramjet-X, a low-cost, expendable test vehicle. The system is designed to make testing of high-Mach airbreathing flight more affordable, faster, and repeatable.

The vehicle will be launched from Hermeus's Quarterhorse aircraft. The company stated that Ramjet-X will enable testing of air-breathing engines at speeds exceeding Mach 5. This technology is crucial for future high-speed flight applications.

The development is part of a broader effort to accelerate aerospace technology advancements. Through Ramjet-X, Hermeus aims to gather data and test engine technologies that could enable faster travel times. Specific cost and timeline details were not disclosed.

Hermeus has previously worked on projects involving hypersonic aircraft. The Ramjet-X development continues the company's focus on advancing high-speed flight technologies.

Original source: prnewswire.com