June 4, 2025 - SpaceX SDA Tranche 0B Falcon 9 Block 5 Second mission launched by the Space Development Agency for the Tranche 0 Transport Layer....

Second mission launched by the Space Development Agency for the Tranche 0 Transport Layer.

April 1, 2023 - A SpaceX Falcon 9 rocket will launch 18 Tranche 0 demonstration satellites for the U.S. military’s Space Development Agency. The launch is the second of two Falcon 9 missions to carry SDA demonstration spacecraft for a future constellation of military missile tracking and data relay satellites.

September 4, 2023 - Tranche 0A, the first launch of the program, deployed 10 satellites from York Space Systems and SpaceX as part of their first Layer test program on April 3, 2023. Tranche 0B, the second launch overall in the constellation, contains two distinct ...

August 29, 2024 - This SDA constellation is expected to operate over Ka band, have stereo coverage and be dynamically networked for simpler hand-offs, greater bandwidth and fault tolerance. Initially, the Tranche 0 constellation consisting of 20 space vehicles ...

May 28, 2023 - Tranche 0 is a 28-satellite demonstration constellation. The first 10 spacecraft — eight communications satellites made by York Space and two missile-detection satellites made by SpaceX — launched April 2 on a SpaceX Falcon 9. SDA initially ...

April 4, 2023 - Tranche 0 is the first in a series to support the National Defense Space Architecture that will eventually incorporate 300 to 500 LEO satellites · RESTON, Va., April 4, 2023 /PRNewswire/ -- Ten Space Development Agency (SDA) satellites are ...

2 days ago - SDA's current schedule expects Tranche 0 capability will be on orbit in time to support a summer 2023 demonstration. Link 16 connectivity between Five Eyes nations, via Low Earth Orbit Tranche 0 satellites was demonstrated from 21 November to ...

The capability demonstrated by the Tracking Layer Tranche 0 will provide missile warning and tracking information to national defense authorities, and tracking and cueing data for missile defense elements.

May 13, 2024 - The Space Development Agency (SDA) today announced the successful initial launch of Tranche 0 (T0) of the Proliferated Warfighter Space Architecture (PWSA), the Transport and Tracking Layer satellites that will demonstrate the low-latency ...

Tranche 0, the warfighter immersion tranche, demonstrates the feasibility of a proliferated architecture in cost, schedule, and

September 2, 2023 - Following two scrubs, SpaceX launched on the third attempt with a batch of 13 communications and missile tracking satellites from Space Launch Complex 4 East (SLC-4E) at Vandenberg Space Force Base on the Tranche 0 Flight 2 mission for the Space Development Agency (SDA) on Friday.

March 29, 2023 - The Space Development Agency has cleared the first transport and tracking satellites in Tranche 0 for launch.

September 2, 2023 - The launch vehicle deployed the satellites into an insertion orbit where SDA will begin test and checkout procedures, which will eventually include orbit raising to reach the intended orbit at approximately 1,000 km. Tranche 0 ground support is provided by the U.S.

September 5, 2023 - A SpaceX Falcon 9 launched the Space Development Agency’s Tranche 0 mission to low-Earth orbit from Space Launch Complex 4E at Vandenberg Space Force Base, Calif., at 7:29 a.m. on April 2, 2023.This was the SDA’s first dedicated launch.

April 4, 2023 - The Space Development Agency successfully got its Tranche 0 satellites off the ground April 2, two and half years after it first awarded the contracts. Those two and a half years included a few extra days of delays, but when a SpaceX rocket lifted off from Vandenberg Space Force Base carrying 10 satellites—eight for transporting and relaying data and two for missile tracking—it put SDA’s vision for the future into orbit for the first time.

May 14, 2024 - The satellites will launch from Space Launch Complex 40 at Cape Canaveral Space utilizing SpaceX’s Falcon 9 rocket. This includes two satellites for MDA’s Hypersonic and Ballistic Tracking Space Sensor (HBTSS) and the final four SDA Tranche 0 (T0) Tracking Layer satellites of its Proliferated Warfighter Space Architecture (PWSA).

March 20, 2024 - Of the 27 satellites in Tranche 0, 19 perform data transport and communications, while eight do missile warning. One additional satellite remains on the ground as a testbed. SDA and MDA worked together on the launch, because the MDA’s two Hypersonic and Ballistic Tracking Space Sensor satellites are closely related to SDA’s “Tracking Layer” for missile warning and tracking.

A SpaceX Falcon 9 rocket launched the SDA Tranche-0 Launch 1 mission on Sunday, April 2, 2023 at 2:29 PM (UTC).

September 18, 2025 - (SDA) WASHINGTON — The Space Development Agency recently launched 13 more early-version satellites in its planned communications and missile tracking networks in low Earth orbit. “Tranche 0 is the demonstration and warfighter immersion tranche.