Airfoil Data
GOE647
GOE 647 AIRFOIL
Wing Geometry Simulator
The GOE 647 AIRFOIL is a 13.3% chord-thickness airfoil with a maximum camber of 6.7% 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 -6.7°.
Thin airfoil theory predicts a stall angle near 11.1° and a peak lift-to-drag ratio around 71 at typical UAV and light-aircraft Reynolds numbers — useful benchmarks before running a full XFOIL or NeuralFoil polar. The 13% thickness provides structural depth for main-spar placement without excessive drag penalty at moderate speeds.
Designers evaluating the GOE647 typically compare it against profiles of similar thickness: GOE 562 AIRFOIL, UAG 88-143/20, GOE 502 AIRFOIL, GOE 702 AIRFOIL, EPPLER 654 AIRFOIL. The GOE 314 (HANSA-BRANDENBURG) AIRFOIL is another reference profile frequently considered alongside it.
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Related Airfoils
Engineers evaluating the GOE647 frequently compare it against profiles with comparable geometric constraints. Below are the closest matches based on maximum thickness (13.3%) and max camber (6.7%).
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