Airfoil Data
GOE390

The GOE 390 AIRFOIL is a thick 16.8% chord-thickness airfoil with a maximum camber of 8.4% at 29% chord, suited to high-lift UAV wings, RC sailplanes, and low-Reynolds-number slow-flyers. At zero angle of attack the cambered geometry generates positive lift, giving an estimated zero-lift angle of -8.4°.

Thin airfoil theory predicts a stall angle near 9.9° and a peak lift-to-drag ratio around 75 at typical UAV and light-aircraft Reynolds numbers — useful benchmarks before running a full XFOIL or NeuralFoil polar. The 17% thickness provides structural depth for main-spar placement without excessive drag penalty at moderate speeds.

Designers evaluating the GOE390 typically compare it against profiles of similar thickness: TH 25816 HALE AIRFOIL, MH 150 23.89%, FX74_CL5_140, WORTMANN FX 72-MS-150B AIRFOIL, FX 69-274. The EPPLER 817 HYDROFOIL AIRFOIL is another reference profile frequently considered alongside it.