Airfoil Data
S9104BTE
S9104BTE
Wing Geometry Simulator
The S9104BTE is a thick 18.6% chord-thickness airfoil with a maximum camber of 9.3% at 35% 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 -9.3°.
Thin airfoil theory predicts a stall angle near 9.3° and a peak lift-to-drag ratio around 77 at typical UAV and light-aircraft Reynolds numbers — useful benchmarks before running a full XFOIL or NeuralFoil polar. The 19% thickness provides structural depth for main-spar placement without excessive drag penalty at moderate speeds.
Designers evaluating the S9104BTE typically compare it against profiles of similar thickness: S9104, FX 69-PR-281, EPPLER 863 STRUT AIRFOIL, HAM-STD HS1-430 AIRFOIL, FX 77-W-270S. The GOE 683 AIRFOIL is another reference profile frequently considered alongside it.
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Related Airfoils
Engineers evaluating the S9104BTE frequently compare it against profiles with comparable geometric constraints. Below are the closest matches based on maximum thickness (18.6%) and max camber (9.3%).
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