Airfoil Data
GOE518

The GOE 518 AIRFOIL is a thick 16.3% chord-thickness airfoil with a maximum camber of 8.1% at 30% 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 -8.1°.

Thin airfoil theory predicts a stall angle near 10.1° and a peak lift-to-drag ratio around 74 at typical UAV and light-aircraft Reynolds numbers — useful benchmarks before running a full XFOIL or NeuralFoil polar. The 16% thickness provides structural depth for main-spar placement without excessive drag penalty at moderate speeds.

Designers evaluating the GOE518 typically compare it against profiles of similar thickness: CH10 (smoothed), GOE 511 AIRFOIL, USA 34 AIRFOIL, IST-MT1-18, Rhode St. Genese 36. The AH 63-K-127/24 is another reference profile frequently considered alongside it.