For example, in 2019 the U.S. Navy began testing the new VBAT VTOL drone. It looks like a small fixed-wing drone with a pusher rear-mounted propeller-driven gasoline/oil engine. The VBAT propeller is ...
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Revolutionary Jet Engines Without Moving Parts Take FlightUnlike turbines with spinning blades, these engines use pressure waves to generate thrust, offering unmatched simplicity, ...
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