CFD Analysis
USER MANUAL
5
The geometry was designed to provide the best possible aerodynamic characteristics. The Eppler E193
airfoil was selected. With the center of gravity correctly positioned 66mm from the leading edge, the
aircraft maintains a substantial margin of longitudinal stability with zero pitching moment at zero angle of
attack. Between 0 and 2 degrees of AoA, the aircraft achieves maximum efficiency at speeds ranging from
50 to 60 km/h. With the recommended motor and propeller and 4S battery, the aircraft flies steadily in
level flight at approximately 30% power, resulting in an average current draw of 4A and providing over
4 hours of flight time. The power reserve is significant, allowing for the use of a 3S battery with lower
voltage. There is considerable flexibility in the choice of motor and battery, depending on user
preferences. When properly configured, the aircraft does not require a flight controller and can be flown
in both manual and automatic modes.
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