Falcon 9 Block 5 | SDA Tranche 1 Transport Layer E
Tranche 1 Transport Layer E is one of six missions by the United States Space Force Space Development Agency (SDA) for the Proliferated Warfighter Space Architecture (PWSA) Tranche 1 Transport Layer constellation, which will provide assured, resilient, low-latency military data and connectivity worldwide to the full range of warfighter platforms from Low Earth Orbit satellites.
The constellation will be interconnected with Optical Inter-Satellite Links (OISLs) which have significantly increased performance over existing radio frequency crosslinks. It is expected to operate over Ka band, have stereo coverage and be dynamically networked for simpler hand-offs, greater bandwidth and fault tolerance.
This launch carries 21 satellites manufactured by York Space Systems.
Falcon 9 is a two-stage rocket designed and manufactured by SpaceX for the reliable and safe transport of satellites and the Dragon spacecraft into orbit. The Block 5 variant is the fifth major interval aimed at improving upon the ability for rapid reusability.
When is the Falcon 9 Block 5 | SDA Tranche 1 Transport Layer E launch?
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Mission Profile
SDA Tranche 1 Transport Layer E was a Falcon 9 Block 5 mission operated by SpaceX that lifted off from Space Launch Complex 4E, Vandenberg SFB, CA, USA on July 16, 2026. The flight carried its payload on a government/top secret mission to Polar Orbit. The first stage, booster B1103, made its 4th flight, returning to service just 27 days after its previous mission. The launch was a success.