Airfoil Data
GOE405

The GOE 405 AIRFOIL is a 12.0% chord-thickness airfoil with a maximum camber of 6.0% at 40% chord, suited to general-aviation and UAV wing design. At zero angle of attack the cambered geometry generates positive lift, giving an estimated zero-lift angle of -6.0°.

Thin airfoil theory predicts a stall angle near 11.6° and a peak lift-to-drag ratio around 69 at typical UAV and light-aircraft Reynolds numbers — useful benchmarks before running a full XFOIL or NeuralFoil polar. The 12% thickness provides structural depth for main-spar placement without excessive drag penalty at moderate speeds.

Designers evaluating the GOE405 typically compare it against profiles of similar thickness: EPPLER 1214 AIRFOIL, DAE-31 AIRFOIL, Bambino 6, GOE 703 AIRFOIL, RAF 6 AIRFOIL, 12%, LE rad. 0.012, TE rad. 0.0092, NACA TR259 smoothed. The EPPLER 329 AIRFOIL is another reference profile frequently considered alongside it.