A Revolutionary Approach: UK Satellite Launching with High-Tech Knitwear
An artist’s impression of CarbSAR orbiting Earth
Oxford Space Systems
A groundbreaking UK satellite, CarbSAR, is set to launch with a unique twist – incorporating cutting-edge knitwear technology. Scheduled for deployment into orbit on Sunday, CarbSAR will feature a mesh radar antenna crafted using a machine typically used in textile manufacturing.
Amool Raina, the production lead at Oxford Space Systems (OSS), explains, “It’s a very standard, off-the-shelf industrial machine used for knitting jumpers. All we’ve done is add some bells and whistles to let it stitch our special yarns.” OSS has collaborated with Surrey Satellite Technology Limited (SSTL) to integrate this innovative antenna onto a small, cost-effective spacecraft capable of capturing high-resolution images of Earth’s surface.
If CarbSAR performs as anticipated, a similar groundbreaking design will be implemented for a network of surveillance satellites for the British Ministry of Defence (MoD) in the near future.
The unique “wool” utilized in OSS’s knitting process comprises an ultra-fine tungsten wire coated in gold. The machine produces meters of fabric at a time, which can then be shaped into a smooth parabolic dish ideal for radar imaging. This novel approach not only enhances efficiency but also reduces costs associated with traditional satellite construction.
A notable aspect of the design is the radial winding of each rib around a central hub, enabling the structure to collapse to a compact diameter of just 75 cm for launch. Upon reaching orbit, the carbon fiber ribs straighten out, pulling the mesh into place to form the parabolic dish with remarkable precision.
Sean Sutcliffe, OSS’s chief executive, emphasizes the importance of achieving a flawless parabolic shape for optimal imaging capabilities. Testing has confirmed that the mesh sheets maintain the desired configuration within a millimeter of accuracy, showcasing the efficacy of this innovative technology.
Pioneering UK’s Aerospace Advancements
The deployment of CarbSAR marks a significant milestone in the UK’s efforts to reclaim its position as a leader in space radar technology. Despite lagging behind international competitors in recent years, initiatives like CarbSAR and the upcoming ISTARI program signify a resurgence in British aerospace engineering.
Andrew Cawthorne, SSTL’s managing director, affirms the growing interest from foreign governments in adopting similar radar concepts. The successful operation of CarbSAR is poised to demonstrate the UK’s capabilities in satellite imaging, paving the way for potential collaborations on a global scale.
CarbSAR’s advanced technology is expected to enable the detection of objects as small as 50 cm in size, offering enhanced surveillance capabilities for military and intelligence operations. With the antenna deployment scheduled shortly after launch, UK Space Command is poised to monitor the satellite’s performance closely.
Major General Paul Tedman, commander of UK Space Command, commends the innovative collaboration behind CarbSAR, expressing excitement for its integration into the Oberon constellation and the broader ISTARI satellite program. The successful deployment of CarbSAR heralds a new era of advanced satellite imaging technology, positioning the UK at the forefront of space innovation.
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