quaddron3
lvl.2
Canada
Offline
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As a human being, your depth perception is maybe only 200m out maximum. Which means if you fly out further than that, it gets dicey especially for the uninitiated in RC stuff.
Doubly important why you need drones like the phantom with reliable onboard compasses, GPS, FPV and IMUs, so that you can guide the bird back manually using all FPV based controls while the bird is essentially out of sight of you past 200m.
If you must be 'within sight', it means you should only fly really close to yourself in a 200m radius or so. If you're flying far, you can't reasonably claim you are in control without any onboard sensors. Your eyes simply will not be able to make out direction, pitch, yaw, etc very very far out at a distance.
Have you been to RC flight fields? They are not that big. They're often located out in the open in deserted areas, but where people fly, are often in a relatively small area. Its because they can't control or see what is going on with their RC copter or jet after a certain distance. So they don't even bother playing it that far. Hence the fields are not huge.
Another problem with these symmetrical quadcopters is that at a distance you really don't know which direction is front unless you start commanding it to move a certain direction. But that is assuming your eyes can make out the movement, which gets harder and harder the further out you are. Even with color coding or lights showing front/back, its again irrelavant at a distance.
So I would argue, to fly safe past 200m or so, you NEED relatively sophisticated and intelligent drones like the phantom that has GPS, live FPV camera feed, compass, IMUs and some autonomous RTH functions. Without those, I dont' think anyone can claim to be able to fly safely out a certain distance.
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