# Hermeus unveils Ramjet-X high-Mach test vehicle to fly on Quarterhorse

_Friday, September 11, 2026 at 2:47 AM EDT · Products · Latest · Tier 2 — Notable_

![Hermeus unveils Ramjet-X high-Mach test vehicle to fly on Quarterhorse — Primary](https://assets.newatlas.com/dims4/default/0411db1/2147483647/strip/true/crop/1920x1008+0+36/resize/1200x630!/quality/90/?url=https%3A%2F%2Fnewatlas-brightspot.s3.ap-southeast-2.amazonaws.com%2F78%2F90%2F408ef8eb4f64bc98f2305d1f9bce%2Framjet-x-01-still.jpg&na.image_optimisation=0)

Hermeus has unveiled plans for Ramjet-X, a high-Mach test vehicle designed to be carried aloft by a supersonic variant of its Quarterhorse aircraft and released at ignition speeds.

The company says Ramjet-X will offer a "Flight Test as a Service" platform letting commercial and government clients test sensors, communications systems, high-temperature materials, autonomy software, and propulsion under sustained high-Mach conditions without building their own test vehicles. Engine testing is underway at Hermeus's HEAT facility in Jacksonville, Florida, with high-temperature structure work in El Segundo, California. Flight testing is slated for 2027.

## Sources

- [New Atlas: Technology-Innovation-Outdoor News](https://newatlas.com/aircraft/quarterhorse-ramjet-x-high-mach-flight-test-platform/)

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Retrieved: 2026-09-11T10:22:37.650Z
Publisher: Tech & Business (techandbusiness.org)