The Week In Technology, Sept. 7-13, 2020

HY4 aircraft fitted with electric-hybrid propulsion system
A hydrogen-fuel-cell propulsion system is being ground-tested in the HY4 at Ulm University in Germany.
Credit: Mahepa Project
European Hybrid-Electric Testbed Prepared for Flight The first of two aircraft fitted with a modular hybrid-electric propulsion system developed under a European research program is expected to fly in September. The four-seat HY4 has been fitted with a hydrogen fuel-cell version of the power train...

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