# Quarterhorse Wind Tunnel Testing

**February 27, 2023**

[CFD](https://en.wikipedia.org/wiki/Computational_fluid_dynamics) simulations are great. But there comes a point when you need to test physical hardware in the physical world. And that’s what wind tunnel testing accomplishes.

Quarterhorse Wind Tunnel Testing.mp4 from Hermeus on Vimeo

We took a 10% scaled model of [Quarterhorse](https://contrabass-harpsichord-geca.squarespace.com/quarterhorse) up to [Calspan](https://calspan.com/) in Buffalo, NY and spent a week subjecting it to Mach 0.3 - 1.3 airflow. These subsonic and transonic regimes are critical to understand in preparation for our first flights of Quarterhorse.

This also gave us a chance to study the impact airflow has on Quarterhorse’s control surfaces and landing gear.

We’ll combine our findings with the data from nearly 1,000 CFD runs to create a comprehensive understanding of the aerodynamics of Quarterhorse. We want to find any discrepancies and make improvements before we fly.

Ultimately, flight is the real test.

**ABOUT HERMEUS**

Hermeus is a high-speed aircraft manufacturer focused on the rapid design, build, and test of high-Mach and hypersonic aircraft for the national interest. Working directly with the Department of Defense, Hermeus delivers capabilities that will ensure that our nation, and our allies, maintain an asymmetric advantage over any and all potential adversaries.

Contact us at [press@hermeus.com](mailto:press@hermeus.com) or follow us online.

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**Find 4K footage for download on** [**Vimeo**](https://vimeo.com/hermeus/download/1090622130/fbe305eab4) **.**