Posted by HugePanic on September 11, 2008 at 11:00am
Target of Step 1 was to build a RC Plane with "good" handling for the use as a UAV.I chose a Foam/Depron design with KFm1 (Kline-Fogleman) wing and a box type fuselage.Elevator and rudder are flat.Dimensions:Span: 1.25mLengt: about 1mWeight: about 500g (with FMA-Co-Pilot)These wings are a surprisingly well working compromise for a universal "utility" airfoil.The Step is located at 50% chord length. There is one CF spar, and a plywood reinforcement.First flight went well. I had to adjust the motor angles after that, but thats the same at all aircraft i think.One special point is the single aileron.I don't want to fly any aerobatics, so one aileron should be enough, and it is.After the first flight I enlarged the aileron until the wingtip, now there is enough authority for a uav, even at windy days. The only problem is was that the deep chord of the wings in combination with the single aileron design creates very large pitching moments.I have to programm my transmitter to get them away for manual flight.But the plane is easy to fly for me, event with manual compensation of these moments.See "Step 2" for more about this
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