david.p.mann
Second Officer
Flight distance : 18669501 ft
United States
Offline
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Are you flying in windy conditions with the wind direction perpendicular to your flight path? If so, the Inspire 1 will drift sideways in the direction the wind is blowing WHILE IT IS MOVING FORWARD OR BACKWARD. Once stopped, and hovering, the I1 will hold its position very well even in 20+ mph winds.
It has been a few months since I tested this in detail, but what I found in August 2015, when I tested this extensively, was that the Inspire 1 and the Phantom 3 Pro that I owned hold their hover position extremely well in winds of 15-20 mph. HOWEVER, if you attempt to fly straight forward or backward in a crosswind, the Inspire 1 and P3Pro will drift sideways significantly with the wind. On the Flight Records, if you go forward and backward 6 or 7 times with a crosswind coming directly from the left or right, the I1 and P3Pro flight path will be a Zig-Zag pattern. The individual forward and backward flight record segments are perfectly straight - not curved (assuming the wind speed is constant), but the aircraft will continuously drift in flight in the direction of the wind. Of course, million dollar aircraft that are not using GPS lock and a programmed flight path will do exactly the same thing.
You can test if wind drift is your current issue by flying back and forth with a cross wind and you will see sideways drift (flight record path is a zig-zag pattern). Then fly forward and backward multiple times in the same direction as the wind is blowing and you should see zero sideways drift in this case. The flight record forward and backward path traces will lie directly on top of each other.
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