Ping case Let’s just start with a few numbers and some back of the envelope math: 1.2 million drones were sold in the United States in 2016 1,800 reported pilot drone sightings in the United States in 2016 (up 25% from 2015) 0.4 miles – about the maximum distance I can see my DJI Phantom 4 with unaided eyes 150 knots – average approach speed of a 737-800 8.4 seconds […]
from Best Flying Drones http://ift.tt/2jV2JJ2
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