German drone maker Quantum Systems says its Apex Recordhunter, a battery-powered experimental drone, flew at 777 km/h (483 mph) in a record attempt this week, faster than any battery-electric drone has flown before and well above the speed of Russiaโs jet-powered attack drones. Martin Karkour, the companyโs chief revenue officer, announced the run, saying the [โฆ]
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