Airfoil Data
GOE320

The GOE 320 (HANSA-BRANDENBURG II.1) AIRFOIL is a 12.4% chord-thickness airfoil with a maximum camber of 6.2% 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 -6.2°.

Thin airfoil theory predicts a stall angle near 11.5° 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 GOE320 typically compare it against profiles of similar thickness: DAI 1336, HQ 3.5/18 AIRFOIL, CLARK YM-18 AIRFOIL, EPPLER 435 AIRFOIL, FX 66-S-171 AIRFOIL. The AS6092 | Ananda-Selig | AIAA Paper 2018-0310 is another reference profile frequently considered alongside it.