Stratolaunch has acquired an additional aircraft, a Boeing 777-200ER, to support ongoing missions involving its reusable Talon-A hypersonic flight test vehicle. Alongside the private U.S. aerospace group’s existing carrier assets— the Boeing 747-400 ‘Spirit of Mojave’ and purpose-built ‘Roc’ aircraft—the former airliner will now be converted into an airborne ‘mothership’ to take Talon-A aloft.
Announcing the investment on September 30, Stratolaunch said that the 777 will expand its flight test infrastructure. Modifications to enable the air launch of the autonomous Talon-A vehicles from its fuselage are expected to be completed in 2027. These are to be released at altitude and fly in excess of Mach 5 before returning to land on a standard runway.
When operational, Stratolaunch estimates this third member of its fleet of test platforms will boost overall flight capacity by 35%. “As demand for hypersonic technologies continues to grow, we’re building the operational scale to make routine hypersonic testing a reality for our customers around the world,” Stratolaunch CEO Zachary Krevor said.
The company describes its custom-designed Talon-A craft as the only autonomous, reusable, air-launched hypersonic flight test platform in the U.S. According to Stratolaunch, “rather than build an entirely new test vehicle for every mission, customers benefit from a reusable platform that increases testing frequency while helping reduce costs and development timelines.” In July, Stratolaunch revealed its pair of Talon-A aircraft had completed more than ten successful hypersonic missions to date.
In February 2026, Stratolaunch extended its partnership with the Pentagon’s Multi-Service Advanced Capability Hypersonics Test Bed program, originally awarded in September 2025. Under this new award, the company pledged to conduct “multiple air-launched flight tests over a two-year period,” supporting U.S. military research objectives.
More In Aircraft
