I was building my 4d rc plane, and then i thought if i could build a rc conputer controlled uav, and fly it over the neighbour s house, and with a pan and tilt camera, it would be nicer. and i don't even need to go to the flying field.
I was wondering, if i could make a rc plane with more than 1 hour of flying time and can fly with a range with 20 kilometers that would be the perfect model.
How is it possiable to make a light yet powerful plane.
pls help me with this project
ps.i have a budget of 400 dollars.