Airfoil Data
E549
EPPLER 549 AIRFOIL
Wing Geometry Simulator
The EPPLER 549 AIRFOIL is a 11.1% chord-thickness airfoil with a maximum camber of 5.6% at 35% chord, suited to general-aviation and UAV wing design. At zero angle of attack the cambered geometry generates positive lift, giving an estimated zero-lift angle of -5.6°.
Thin airfoil theory predicts a stall angle near 11.6° and a peak lift-to-drag ratio around 67 at typical UAV and light-aircraft Reynolds numbers — useful benchmarks before running a full XFOIL or NeuralFoil polar. The 11% thickness provides structural depth for main-spar placement without excessive drag penalty at moderate speeds.
Designers evaluating the E549 typically compare it against profiles of similar thickness: AH 82-150 F, EPPLER E1212MOD AIRFOIL, NACA M9 AIRFOIL, GOE 418 AIRFOIL, IST-MT1-12. The GOE 723 AIRFOIL is another reference profile frequently considered alongside it.
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Engineers evaluating the E549 frequently compare it against profiles with comparable geometric constraints. Below are the closest matches based on maximum thickness (11.1%) and max camber (5.6%).
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