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  1. Most Advanced eVTOL Propulsion System Adaptive Ducted Fan

    Most Advanced eVTOL Propulsion System Adaptive Ducted Fan

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  4. Messerschmitt Me 163 V4 first prototype and unofficially the world's fastest aircraft in 1941

    Messerschmitt Me 163 V4 first prototype and unofficially the world's fastest aircraft in 1941

    4