---

About Featured Expert: Castelion

Castelion Corporation is a U.S. defense and aerospace company focused on the rapid development and scalable manufacturing of advanced hypersonic strike systems and related defense technologies. Founded in 2022, the company is headquartered in El Segundo, California, with operations spanning multiple locations in California, Texas, and New Mexico. Castelion was established by a team of engineers and technologists with backgrounds in aerospace and high-rate manufacturing, with the stated objective of accelerating the delivery of advanced defense capabilities through vertically integrated development and production.

The company’s engineering approach emphasizes hardware-intensive systems designed for rapid iteration, frequent testing, and manufacturability at scale. Castelion’s primary weapons platform, known as Blackbeard, is a hypersonic strike system developed with an emphasis on production efficiency and repeatable flight testing. The program is intended to demonstrate how modern manufacturing methods and shortened development cycles can reduce cost and timeline constraints traditionally associated with advanced weapons systems.

Castelion conducts sustained development and test activities to validate propulsion, guidance, flight control, and structural subsystems. Its testing cadence is structured to support continuous refinement of hardware designs while progressing toward production-ready configurations. This iterative approach reflects the company’s focus on moving quickly from design to flight hardware rather than relying on extended simulation-only development cycles.

To support long-term production goals, Castelion has announced plans for expanded domestic manufacturing infrastructure, including a large-scale production and test campus in New Mexico. The facility is intended to support high-cadence manufacturing of solid rocket motors and hypersonic system components, strengthening U.S. domestic capacity for advanced weapons production.

Castelion has also engaged with U.S. defense stakeholders on early platform integration efforts, supporting compatibility of its hypersonic systems with existing launch and deployment architectures. These activities represent early steps toward operational integration within current military force structures.

The company’s workforce includes engineers and specialists in propulsion systems, avionics, guidance and control, manufacturing engineering, and test operations. Castelion’s work aligns with broader efforts to modernize defense industrial capabilities and expand domestic production capacity for advanced aerospace and weapons technologies.

For more information, please click here.

---

(Editor’s Note: All trademarks mentioned in this article, including company names, product names, and logos, are the property of their respective owners. Use of these trademarks is for informational purposes only and does not imply any endorsement.)