Stratolaunch Systems (Mojave) has acquired one B777-200ER, expanding its fleet to support the flight test platform for its Talon-A hypersonic test vehicles.

The aircraft, whose serial number and registration were not disclosed, will undergo modifications to enable the launch of its Talon-A test vehicles from its fuselage, with completion expected in 2027.

In 2023, the company acquired its first aircraft, a B737-400, N949SL (msn 32745), called The Spirit of Mojave.

ch-aviation has reached out to Stratolaunch Systems for confirmation on the identity of the new B777. It was not immediately available.

Stratolaunch Systems is developing Talon-A, an autonomous, reusable, air-launched hypersonic flight test platform designed specifically for flight testing, enabling the evaluation of advanced technologies under hypersonic flight conditions. The company’s carrier aircraft take Talon-A to altitude before it is air-launched.