Cape Canaveral, Fla. — United Launch Alliance (ULA) marked a major milestone on August 12, 2025, as its next-generation Vulcan Centaur rocket successfully launched its first National Security Space Launch (NSSL) mission for the U.S. Space Force.
The rocket lifted off from Space Launch Complex-41 at Cape Canaveral Space Force Station at 8:56 p.m. EDT, blazing into the night sky in a powerful display of its upgraded capabilities. This mission, designated USSF-106, represents the first operational flight of Vulcan for America’s most sensitive military payloads.
Powerful New Launch System
Flying in its VC4S configuration, the Vulcan was boosted off the pad by four Northrop Grumman GEM-63XL solid rocket boosters. Its first stage—powered by two methane-fueled BE-4 engines built by Blue Origin—carried the Centaur V upper stage high above Earth before staging.
The Centaur V then executed a series of burns to place its two-payload stack directly into geosynchronous orbit. The primary cargo was the Navigation Technology Satellite-3 (NTS-3), an experimental platform developed by the Air Force Research Laboratory in partnership with L3Harris Technologies. The second payload remains classified.
With a mission profile stretching over seven hours, USSF-106 demonstrated Vulcan’s ability to handle complex, long-duration flights—an essential requirement for many national security missions.
Cleared for Critical Missions
This launch follows the U.S. Space Force’s official certification of Vulcan in March 2025, clearing it for high-priority defense operations. The green light came after two earlier certification flights—Cert-1 in January 2024 and Cert-2 in October 2024—successfully proved the rocket’s performance, despite minor setbacks during testing.
With certification secured, Vulcan now joins SpaceX as one of only two providers entrusted to deliver the nation’s most valuable and sensitive satellites to orbit under the NSSL program.
Overcoming Delays and Challenges
Vulcan’s road to service has not been without obstacles. Delays in BE-4 engine production and a booster nozzle anomaly during Cert-2 slowed its debut. However, ULA addressed these issues through thorough investigation and redesigns, leading to Tuesday’s flawless flight.
Military leaders have been eager for Vulcan to replace ULA’s retiring Atlas V and Delta IV Heavy rockets, ensuring the U.S. maintains assured access to space with modern, more capable vehicles.
A New Era for National Security Space Launch
For ULA, the success of USSF-106 is more than just a mission win—it’s a validation of years of development and a signal that America’s space launch infrastructure is entering a new chapter. Vulcan combines higher lift capacity, extended mission endurance, and improved cost efficiency compared to its predecessors.
With several more missions already on the manifest, Vulcan is expected to play a key role in strengthening U.S. defense and intelligence capabilities in space for decades to come.
Key Mission Facts
Vulcan Centaur VC4S Launch Update
| Launch Date & Time | August 12, 2025 – 8:56 p.m. EDT |
| Launch Site | Cape Canaveral SLC-41, Florida |
| Rocket | Vulcan Centaur VC4S |
| Boosters | 4 × GEM-63XL solid rocket boosters |
| Main Engines | 2 × BE-4 (methane-fueled) |
| Payloads | NTS-3 + classified satellite |
| Destination | Direct-to-Geosynchronous Orbit |
| Significance | First operational U.S. Space Force mission on Vulcan |
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