Key Takeaways:
Twenty-one Northrop Grumman satellites were successfully launched for the Space Development Agency’s Tranche 1 Transport Layer, the first plane of a proliferated low-Earth-orbit network that extends the secure Link 16 military data system into space for near-real-time tactical connectivity.
The Transport Layer will link warfighters and missile-tracking satellites within the Proliferated Warfighter Space Architecture, providing resilient, low-latency communications while Northrop Grumman also supplies more than 30 vehicles for the companion missile-warning constellation.
Additional launches of roughly 150 satellites across Tranches 1–3 are scheduled over the coming months, reflecting a rapid-production approach that combines in-house manufacturing, commercial components and AI-enabled assembly lines to field the constellation at scale.
Twenty-one satellites built by Northrop Grumman were successfully launched and deployed for the Space Development Agency’s (SDA) Tranche 1 Transport Layer (T1TL) satellite communications network. T1TL is part of the SDA’s Proliferated Warfighter Space Architecture (PWSA), a rapidly fielded constellation of satellites designed to detect and track missiles and pass data around the world with almost no lag time.
According to Northrop Grumman, its T1TL satellites help extend Link 16 — the secure, high-speed and jam resistant military data network — operationally to space, enabling satellites to rapidly deliver tactical data directly to the warfighter when every second counts; utilize Northrop Grumman’s 7-million square feet of manufacturing floor dedicated to space programs, all equipped with advanced production systems and AI-enabled capabilities; and combine in-house expertise with mature commercial products from industry partners to improve manufacturing speed, affordability and resilience at scale.
Lou Christen, senior director, proliferated systems, Northrop Grumman said, “Our first plane of Transport Layer satellites strengthens the PWSA constellation by adding capacity and diversity of an on-orbit asset, helping SDA accelerate toward global, resilient, instant connectivity for the joint force. We’ve fully embraced the rapid go-to-market strategy and are on contract to deliver approximately 150 innovative satellites for the warfighter, a key capability for an integrated, layered defense system.”
T1TL will provide secure, resilient, low-latency communications and data transport in low Earth orbit to connect warfighters and PWSA missile-tracking satellites across a proliferated, interoperable space network. Northrop Grumman is also under contract to deliver more than 30 space vehicles for SDA’s global constellation of missile warning and tracking satellites that integrate with the Transport Layer, enabling conventional and advanced missile tracking. The company is combining advanced technology and deep mission experience in military satellite communications and responsive ground solutions to for this next-generation constellation in low Earth orbit.
This marks the first in a series of Northrop Grumman’s Tranche 1 launches. The second plane of 21 satellites is planned to follow, with several dozen additional satellites for the PWSA launched into LEO over the next six months. Using modern assembly lines and early investments, Northrop Grumman is building approximately 150 space vehicles for Tranches 1, 2 and 3.
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