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SDA Launches Half of Key Military Satellite Network
17 Jul
Summary
- Space Force restarted satellite deployment with 21 new satellites.
- Half of the 126-satellite Transport Layer is now in orbit.
- Previous launch issues led to a readiness-based launch model.
The Space Development Agency (SDA) has successfully launched 21 new satellites, resuming deployment of the Pentagon's first operational low Earth orbit military data network. This mission, carried by a SpaceX Falcon 9 rocket on July 16, brings the total number of Tranche 1 Transport Layer satellites in orbit to 63, exactly half of the planned 126-satellite constellation.
The launch marks a significant step forward after a pause necessitated by hardware and software challenges encountered with the initial 42 satellites. These issues included thermal modeling, ground contact delays, and propulsion problems. SDA is now adopting a readiness-based launch model, prioritizing spacecraft checkout and integration over a fixed launch schedule.
Director Gurpartap "GP" Sandhoo indicated that with three orbital planes now deployed, SDA can begin focusing on delivering tangible capabilities to warfighters. The Transport Layer is designed to be the communications backbone of the Proliferated Warfighter Space Architecture, facilitating missile warning, tracking, and data relay through optical intersatellite links. However, the full mesh network, enabling data routing across the constellation, is still under development.
