Benjamin Biggs’ Blackbird Drone Tops 730 km/h, But The 685 km/h Average Won’t Count
Australian aerospace engineer Benjamin Biggs pushed his Blackbird speed drone to 730 km/h (454 mph) on a downwind run and 640 km/h (398 mph) flying back into the wind, for a two-direction average of 685 km/h (426 mph). The average…