UK MOD Invests £6.25M in Additive Manufacturing to Combat Parts Obsolescence

The UK Ministry of Defence (MOD) has committed £6.25 million to Project Tampa, a four-phase additive manufacturing (AM) initiative focused on tackling obsolescence and parts shortages for defense platforms expected to remain in service for over a decade. This program has already yielded safety-critical components for land and air systems, underscoring the MOD's strategic shift towards advanced manufacturing, as outlined in its first Defence Advanced Manufacturing Strategy.

Many key MOD platforms, such as the Challenger 2 tank designed in the 1980s, present significant maintenance challenges due to their age and the collapse of original supply chains. Firms that once produced these parts have ceased operations, and the MOD's volume does not guarantee priority from remaining suppliers. A critical hurdle is the documentation gap, with many parts relying on 2D drawings instead of digital CAD models, hindering the effective implementation of AM.

The financial imperative for adopting AM is substantial. A Challenger 2 out of service costs approximately £1,400 daily, a figure that escalates dramatically for larger assets like aircraft carriers or submarines, potentially reaching £1 million per day when unavailable. This highlights the operational and financial necessity of improving platform availability through rapid component production. The conflict in Ukraine has further emphasized the importance of rapid, localized repair capabilities.

Project Tampa, initiated in 2021, has progressed through incremental spirals. Spiral 1 successfully produced and fitted non-safety-critical parts to in-service platforms. Spiral 2 advanced to safety-critical components and the air domain, which carries more stringent certification requirements. Examples include NP Aerospace using wire arc additive manufacturing (WAAM) for a heavy component on the Mastiff vehicle and Thales employing laser powder bed fusion (LPBF) for challenging chaff and flare dispenser magazines.

Future phases, particularly Spiral 4, are designed to broaden industry participation by opening competitive bids for manufacturing unobtainable parts beyond the initial OEM group. While a UK footprint is prioritized, a company's ownership structure is less critical than its ability to contribute to the MOD's AM objectives. This phased approach allows the MOD to build evidence and address intellectual property and certification concerns while developing its AM capabilities.