SilentWings placard at European Rotors 2021. SilentWings GmbH, based in Munich, Germany, has been flight testing its Hydrogen Fuel Cell electric VTOL drone, and displayed the demonstrator at European Rotors 2021. The 35-kg gross weight drone is expected to carry a 10-kg payload for 6 hours over a 700 km range. The tailsitter has a thruster in the tail, which pivots to a conventional tail system in cruise flight. (VFS photo Nov. 18, 2021. CC-BY-SA 4.0)
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