GKN Aerospace achieves major milestone delivering its 1st gr
Stay informed with our
free newsletters

Nov 16, 2022

GKN Aerospace achieves major milestone delivering its 1st ground-based liquid hydrogen fuel system demonstrator

  • An end to end liquid hydrogen aircraft fuel system demonstrator comprising liquid hydrogen fuelling, storage and cryogenic hydrogen conditioning apparatus
  • System performance verified via a Proton Exchange Membrane (PEM) fuel cell stack, with electrical loading representative of typical flight requirements
  • From concept to operation, the demonstrator was delivered within 12 months
  • Part of the Safe Flight project funded by Innovate UK under the Future Flight Challenge

GKN Aerospace has successfully achieved a major milestone delivering a ground-based demonstrator of a liquid hydrogen aircraft fuel system. The demonstrator was designed, built and tested in collaboration with Filton Systems Engineering, under the Innovate UK-funded Safe Flight project. The goal of the project was to investigate the feasibility of using a liquid hydrogen fuel source to increase the endurance of a search and rescue uncrewed aerial system (UAS) concept.

The project enabled GKN to understand and address many of the safety concerns raised by the introduction of such a novel fuel. Integrated fuel tank design and distribution solutions were developed, including vaporisation and conditioning of the liquid hydrogen. The performance of the fuel system was verified by coupling it with a proton exchange membrane (PEM) fuel cell stack, representative of the type that could be installed on a future zero emission aircraft. The project demonstrated successful storage and management of liquid hydrogen, supplying the fuel cell power system with hydrogen at the required temperature and pressure over a range of electrical loads typical of a UAS search and rescue mission.

Key outcomes of the project include development of safe system design, manufacturing knowledge, operational knowledge for liquid hydrogen fuel systems, hydrogen fuel system test data, and an adaptable test rig suited to further study of hydrogen components and subsystems.

Global Hydrogen Aircraft - Market and Technology Forecast to 2029

Global Hydrogen Aircraft - Market and Technology Forecast to 2029

Market forecasts by Region, Technology, Service, Platform, Range, Guidance System, and End-User. Market and Technology Overview, Opportunity and COVID-19 Analysis, and Leading Company Profiles

Published: December 2020 - Pages: 374 pages

Download free sample pages

Max Brown VP Technology GKN Aerospace said: ’’We are delighted with the outcome of this project and believe we are very much at the forefront of exploring the challenges in this area. In a single end - end test environment the team have demonstrated fuelling and storage of liquid hydrogen, conditioning and distribution of cryogenic gas, and the use of PEM fuel cells to generate electrical power.”  Brown continued ”while the focus of this work was on a small scale platform, the achievement is highly aligned with other work we are conducting in programmes such as H2GEAR, where we are delivering propulsion technologies focussed on enabling zero emissions flight.’’

The Safe Flight project has positioned GKN Aerospace for larger and more complex demonstrations of hydrogen-powered aircraft in the future, as the company continues to pursue its mission to become “the most trusted and sustainable partner in the sky”.



Operational Energy Summit 2023

Operational Energy Summit 2023

Reston, VA
Mar 15 - 16, 2023

View agenda
National Congress on Counter UAS Technology 2023

National Congress on Counter UAS Technology 2023

Washington, DC
May 23 - 24, 2023

View agenda