Flying technology

Eye in the sky: police use drone to spy on V festival
“The battery-operated drone’s four carbon-fibre rotors are so quiet they cannot be heard from the ground once it is higher than 50 metres, and at 100 metres up it cannot be seen with the naked eye. It can fly 500 metres high, but the Civil Aviation Authority has set an operating limit of 120 metres. The vehicle, which takes off vertically, can be flown even when out of sight, because it beams images back to video goggles worn by the operator.”
Guardian Unlimited

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