Stratolaunch logs Talon‑A flight

Stratolaunch disclosed on May 21 that it flew its Talon-A3 hypersonic test vehicle on March 6 for the U.S. Missile Defense Agency, adding another mission to a small but growing set of reusable high-speed flights. The vehicle was carried aloft by Spirit of Mojave, a modified Boeing 747-400, and released during what the company identified as Flight Test Experiment Other-04, or FEX-04. Stratolaunch said the mission launched from Mojave Air and Space Port and supported ongoing hypersonic flight testing. The company did not publish the vehicle’s speed, duration or recovery details. ### Why does the Boeing 747 matter in this flight? Spirit of Mojave is central because it gives Stratolaunch a second air-launch platform beyond Roc, the company’s twin-fuselage carrier aircraft. Stratolaunch said the 747-400 transported Talon-A3 to planned release conditions so the vehicle could begin its flight profile at higher altitude. The company has said the aircraft is designed for air-launch missions and high-speed flight research, with operations from conventional runways. (prnewswire.com) A January 2025 Missile Defense Agency contract worth $24.7 million was intended in part to fund modifications to the Boeing 747-400 and expand Talon-A testing for missile-defense work. Stratolaunch said at the time that the 747 would help it launch from airports capable of handling that aircraft type, broadening where missions could be staged. (prnewswire.com) ### Which Talon variant flew, and how does it fit the earlier missions? Talon-A3 was the vehicle used in the March 6 mission, according to Stratolaunch and follow-on industry reports. That distinguishes it from TA-2, the recoverable Talon-A vehicle that Defense News reported completed two hypersonic flights in late 2024 and early 2025 under the Pentagon’s Multi-Service Advanced Capability Hypersonic Testbed, or MACH-TB, program. (flightglobal.com) Those two earlier flights were recovered after reaching Mach 5 or faster, according to Defense News. FlightGlobal and other trade outlets described the March 6 mission as Stratolaunch’s third known hypersonic flight. That count appears to follow the two previously disclosed TA-2 flights and then the Talon-A3 mission announced this week. Stratolaunch itself did not use that formulation in its release, but its statement that it “continues flight operations” with MDA points to repeated use rather than a one-off demonstration. (prnewswire.com) ### What was the Missile Defense Agency testing here? The Missile Defense Agency’s role was explicit in Stratolaunch’s announcement, but the company did not describe the payload, target set or technical objective of FEX-04. Aerospace Global News reported that the mission was conducted under MDA’s Flight Test Experiment Other-04. Stratolaunch said only that Talon-A vehicles are reusable hypersonic test platforms designed to collect data in high-speed flight environments for government and industry users. (aerotime.aero) Zachary Krevor, Stratolaunch’s president and chief executive, said in the company statement that “hypersonic testing requires precision, speed and reliable access to flight.” He said each mission expands the nation’s ability to test and advance critical technologies. ### Why are repeat flights getting attention? (prnewswire.com) Defense News reported on May 5, 2025, that recovering Talon-A after hypersonic flight could lower test costs by “orders of magnitude,” citing Krevor, and make the vehicle more accessible for Defense Department programs. The same report said Pentagon leaders had been working since 2022 to raise hypersonic flight cadence to about one test per week, with MACH-TB as part of that effort. (prnewswire.com) The next visible step is additional government test work. Defense News reported in 2025 that Stratolaunch was on contract for five MACH-TB flights and would support a Missile Defense Agency campaign later that year, while Stratolaunch said on May 21 that Talon-A remains available as a reusable data-collection platform for government and industry customers. (defensenews.com)