Design and Testing of a Vertical Take-Off and Landing UAV Optimized for Carrying a Hydrogen Fuel Cell with a Pressure Tank

Flight endurance is still a bottleneck for many types of unmanned air vehicle (UAV) applications. While battery technology improves over the years, for flights that last an entire day, batteries are still insufficient. Hydrogen-powered fuel cells offer an interesting alternative but pose stringent requirements on the platform. The required...