Airfoil Data
GOE525

The GOE 525 AIRFOIL is a thick 17.0% chord-thickness airfoil with a maximum camber of 8.5% at 40% 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 -8.5°.

Thin airfoil theory predicts a stall angle near 9.8° 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 GOE525 typically compare it against profiles of similar thickness: GOE 523 AIRFOIL, UNIVERSITY OF GLASGOW GU25-5(11)8 AIRFOIL, GOE 440 AIRFOIL, SIKORSKY DBLN-526 AIRFOIL, GOE 421 AIRFOIL. The EPPLER 593 AIRFOIL is another reference profile frequently considered alongside it.