Collins Aerospace to lead the development of thermoplastics for liquid hydrogen tanks

CORK, Ireland. (Mar. 2, 2023) – Collins Aerospace, a Raytheon Technologies business, has been selected under the Clean Hydrogen Joint Undertaking to lead a consortium working to develop new thermoplastics technology for the liquid hydrogen tanks necessary to power hydrogen propulsion architectures in future more sustainable aircraft.

The Collins-led consortium will bring together Collins sites across France, Italy, United Kingdom, Poland, the Netherlands, U.S. and Ireland along with NLR, Delft University of Technology, ATR, Novotech, and Unified International.

While liquid hydrogen contains approximately three times as much energy per kg as traditional jet fuel, it has a lower specific density meaning that it requires nearly four times as much volume to match the energy content of the same mass of traditional jet fuel. To overcome this, thermoplastic tank structures are in development. This strong, yet lightweight tank design is the focus of the new project.

"The COCOLIH2T project addresses the challenges of shifting from traditional jet fuel to a fully sustainable, clean burning hydrogen fuel" said Mary Lombardo, vice president, Advanced Technologies at Collins Aerospace. "Compared with traditional fuel tanks, hydrogen tanks must reduce weight and enable containment of cryogenic fluid. COCOLIH2T is the kind of aerospace industry cross-collaboration Collins is focused on to reduce the environmental impact of aviation and lead us to a sustainable future"

This project has the potential to go beyond by designing and manufacturing a disruptive tank through novel fabrication technologies enabling a 60% reduction in production energy consumption and at least 50% in production time leading to significantly lower manufacturing costs.

Thermoplastic composites are advanced materials known for their durability and unique manufacturing characteristics. The material is lightweight, suitable for extreme temperatures and has the capacity to be recycled. Collins is developing technologically advanced materials for the future of sustainable commercial aviation.

About Clean Hydrogen Joint Undertaking

The Clean Hydrogen Joint Undertaking (JU) is a public private partnership supporting research and innovation (R&I) activities in hydrogen technologies in Europe. For more information, visit

About Collins Aerospace

Collins Aerospace, a Raytheon Technologies Corp. business, is a leader in technologically advanced and intelligent solutions for the global aerospace and defense industry. Collins Aerospace has the extensive capabilities, comprehensive portfolio, and broad expertise to solve customers’ toughest challenges and to meet the demands of a rapidly evolving global market. For more information, visit

Funded by the European Union under Grant Agreement 101101404

Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the Clean Hydrogen Joint Undertaking. Neither the European Union nor the granting authority can be held responsible for them.”

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