Saft has been awarded a multi‐million Euro contract by Thales Alenia Space, the prime contractor, to supply all the onboard Li‐ion batteries for the Iridium NEXT LEO (low‐Earth orbit) satellite constellation scheduled to start launching in 2015. This contract for a total of 81 battery systems further consolidates Saft’s position as the world’s leading supplier of advanced battery technology for space flight applications.
‘This major contract for the Iridium NEXT project is a significant advance in Saft’s strategy to develop a market‐leading position in the very important LEO sector by building on our well established reputation for delivering reliable, high performance leading‐edge batteries for GEO and space vehicle customers. It also further consolidates our excellent relationship with Thales Alenia Space developed on platforms such as the Spacebus GEO and Proteus LEO satellites,’ said Philippe Jehanno, General Manager, Saft’s Space and Defense Division. ‘We have already had considerable success in the LEO constellation market, but the size of the Iridium NEXT contract now takes us to the next level, particularly as the volume enables our manufacturing facilities to progress beyond what is effectively a customized manufacturing process to implement a series production approach.’
Iridium NEXT will maintain the same architecture as Iridium’s current constellation, the world’s largest commercial constellation, with 66 cross‐linked LEO satellites covering 100 percent of the globe.
However, Iridium NEXT will substantially enhance and extend the Iridium mobile communications services by delivering: higher data speeds; powerful new services and devices; advantages of IP technology; backward compatibility with current handsets, devices and applications. In addition to the 72 operational satellites ‐including 6 in‐orbit spare satellites – the Iridium NEXT project also comprises 9 ground spares making a total of 81.
Iridium NEXT battery systems
The battery systems for the Iridium NEXT satellites will comprise four battery modules based on Saft’s MPS 176065 (5.6 Ah) space‐qualified prismatic format Li‐ion cells developed to offer the ideal combination of robust construction, lightweight design, high performance and long service life for LEO satellite applications. Integral cell protection devices, active balancing systems, heating circuits and all associated telemetry functions ensure that the batteries will meet the specified life‐time requirements.
Saft already has a proven track record in providing MPS batteries for a satellite constellation –this experience combined with Saft’s engineering expertise in designing competitive battery products resulted in the award of this contract for the Iridium NEXT programme. Saft’s industrialized cell and battery manufacturing capabilities are customized to meet the highly rigorous demands of space qualification, and comply with the highest ESA/CNES and spaceflight standards.
