Advancing Hypersonic Flight Testing

Stratolaunch, headquartered in Mojave, California, is at the forefront of developing and operating high-speed flight test platforms, particularly focusing on hypersonic technologies. Originally founded in 2011 by Microsoft co-founder Paul Allen, the company has transitioned from its initial goal of air-launching satellites to concentrating on hypersonic flight testing. This shift aligns with the growing demand for rapid, reusable, and cost-effective testing solutions in the defense sector.

The Roc Carrier Aircraft

Central to Stratolaunch’s operations is the Roc, the world’s largest aircraft by wingspan, measuring 385 feet (117 meters). This dual-fuselage, six-engine aircraft serves as a mobile launch platform for hypersonic vehicles. The Roc’s design allows it to carry payloads up to 550,000 pounds (250,000 kg) and reach altitudes of 35,000 feet at speeds of Mach 0.63, providing a versatile platform for various test scenarios.

Talon-A Hypersonic Test Vehicles

Stratolaunch’s Talon-A series comprises autonomous, reusable hypersonic test vehicles designed to reach speeds exceeding Mach 5. These vehicles are launched from the Roc and are capable of carrying customizable payloads for various testing needs.

• Talon-A1 (TA-1): The first powered flight of TA-1 occurred in March 2024, marking a significant milestone in Stratolaunch’s hypersonic testing capabilities.
• Talon-A2 (TA-2): In December 2024 and March 2025, TA-2 successfully completed two hypersonic flights, demonstrating reusability by returning to Vandenberg Space Force Base after each mission.

These achievements underscore Stratolaunch’s commitment to providing reliable and reusable platforms for hypersonic testing.

Strategic Partnerships and Contracts

Stratolaunch has secured significant contracts to advance its hypersonic testing capabilities. Notably, the company was awarded a $24.7 million agreement by the Missile Defense Agency to support a hypersonic flight test campaign. Additionally, Stratolaunch’s involvement in the Multi-Service Advanced Capability Hypersonic Testbed (MACH-TB) program highlights its role in accelerating hypersonic innovation through public-private partnerships.

Technological Innovations

Stratolaunch’s advancements are not limited to airframes. The company utilizes the Hadley engine, developed by Ursa Major Technologies, to power its Talon-A vehicles. This 5,000-pound-thrust, kerosene-fueled engine employs a staged combustion cycle, offering high performance suitable for hypersonic applications.

Future Outlook

With the successful demonstration of reusable hypersonic flight and recovery, Stratolaunch is poised to play a pivotal role in the development and testing of next-generation aerospace technologies. The company’s focus on providing flexible, rapid, and cost-effective testing solutions aligns with the evolving needs of the defense and aerospace sectors.