Sda Revs Up Launch Campaign After Nine-Month Hiatus
The Space Development Agency (SDA) is poised to resume its launch campaign for its low-Earth orbit …
16. July 2026
Space Agency Unveils Plans To Restart First Gen Satellite Launches After Technical Setbacks
The Space Development Agency (SDA) has announced plans to resume launch operations for its first-generation Tranche 1 Transport Layer satellites after addressing technical issues discovered during the initial 42 birds launched last year. According to SDA to Resume Launches After 9-Month Pause, Early On-Orbit Challenges, the agency has implemented design fixes to resolve software and hardware problems that had caused delays.
21 Tranche 1 Transport Layer satellites built by York Space Systems will be launched on a SpaceX Falcon 9 rocket on Thursday, marking a significant milestone in SDA’s efforts to deploy its constellation of satellites. This will provide limited regional coverage and enable the agency to detect and track missile threats.
The launch is part of a larger effort to establish a network of satellite constellations that can provide situational awareness and enhance military operations. The Tranche 1 Transport Layer satellites are designed to operate in low Earth orbit and will be used for space-based intelligence, surveillance, and reconnaissance (ISR).
However, the initial launch last September and October was marred by technical issues, including problems with thermal modeling and electric propulsion motors. These issues led to delays and caused concerns about the agency’s ability to meet its launch schedule.
Despite these challenges, SDA Director Gurpartap “GP” Sandhoo acknowledged that significant progress has been made in addressing the technical problems. The agency has worked closely with its vendors to implement design fixes and perform extensive testing to ensure that the satellites function as intended.
“We did see software and hardware issues on the ones on orbit right now,” Sandhoo said. “That’s why we kind of delayed and took a pause to make sure we fix at least the known issues.” He added that while some issues remain unresolved, the agency is confident that the fixes will be implemented in time for the upcoming launch.
The SDA has also made progress in developing its Tracking Layer missile warning and tracking satellites. The agency has awarded contracts worth $1.3 billion to L3Harris and Northrop Grumman to develop 14 satellites each, with each company expected to build four satellites for the Tracking Layer constellation.
The Tranche 1 program is part of a larger effort by the SDA to establish a network of satellite constellations that can provide enhanced military capabilities. The agency’s Proliferated Warfighter Space Architecture (PWSA) aims to create a decentralized, peer-to-peer network that can enable real-time data sharing and coordination between different military units.
However, the Tranche 1 program has faced significant challenges, including difficulties in developing and producing satellites at the required pace. Sandhoo acknowledged that the agency still faces significant hurdles, including the need for Federal Aviation Administration (FAA) approval to test using Link 16 technology to transmit targeting data to legacy military platforms over the continental United States.
" [O] n the spectrum approvals and authorizations, we are working that process," Sandhoo said. “That’s not a short or a simple process. It’s a long and arduous process.” Despite these challenges, Sandhoo remains optimistic about the agency’s ability to overcome them and achieve its goals.
“We expect to get those approvals, hopefully soon,” Sandhoo said. “We are looking forward to the launch on the 16th, and by the end of this launch, we’ll have half our Transport constellation on orbit. And once you have three planes up, we’re starting to talk real capability for the warfighter — some real time, some real capability — and we plan to start delivering that.”
The Tranche 1 program is critical to the SDA’s efforts to establish a robust and reliable satellite constellation. The agency’s ability to deploy its satellites in low Earth orbit will enable it to detect and track missile threats with greater accuracy and speed.
Moreover, the Tranche 1 program is part of a larger effort by the Department of Defense (DoD) to enhance its space-based capabilities. The DoD has recognized the importance of satellite technology in supporting military operations and has invested heavily in developing new space-based systems.
The SDA’s efforts to deploy its constellation of satellites are closely aligned with the Pentagon’s Golden Dome initiative, which aims to create a decentralized, peer-to-peer network that can enable real-time data sharing and coordination between different military units. The agency’s Proliferated Warfighter Space Architecture (PWSA) is designed to provide enhanced situational awareness and support military operations in a variety of domains.
In conclusion, the SDA’s efforts to resume launch operations for its Tranche 1 Transport Layer satellites mark an important milestone in the agency’s efforts to establish a robust and reliable satellite constellation. Despite significant challenges, including technical issues and regulatory hurdles, Sandhoo remains optimistic about the agency’s ability to overcome them and achieve its goals.
The successful deployment of the Tranche 1 satellites will enable the SDA to detect and track missile threats with greater accuracy and speed, providing enhanced situational awareness and support to military operations. The agency’s efforts to establish a network of satellite constellations are critical to the DoD’s efforts to enhance its space-based capabilities and provide real-time data sharing and coordination between different military units.
Overall, the SDA’s Tranche 1 program is an important step forward in the development of space-based technologies that can support military operations. The agency’s ability to deploy its satellites in low Earth orbit will enable it to detect and track missile threats with greater accuracy and speed, providing enhanced situational awareness and support to military operations.
As the SDA continues to develop its satellite constellation, it is essential to recognize the importance of collaboration between the agency, its vendors, and regulatory bodies. The successful deployment of the Tranche 1 satellites will depend on the ability of these stakeholders to work together to overcome technical and regulatory hurdles.
In the end, the SDA’s efforts to establish a robust and reliable satellite constellation are critical to the DoD’s efforts to enhance its space-based capabilities and provide real-time data sharing and coordination between different military units. The agency’s success will depend on its ability to overcome challenges and achieve its goals, providing enhanced situational awareness and support to military operations.