The idea sounds like science fiction at first glance. A small American firm, Stavatti Aerospace, is pitching a “bat wing” combat jet called the SM 39 Razor to the United States Navy. On paper, this ...
Tethered drones, such as this one showcased by Elistair in 2021, offer unlimited flight time and are invulnerable to external frequency disruptions. (Photo by JOSEPH PREZIOSO/AFP via Getty Images) ...
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