Airfoil Data
GRIFFITH30SYMSUCTION
Griffith 30% Suction Airfoil
Wing Geometry Simulator
The Griffith 30% Suction Airfoil is a thick 15.3% chord-thickness airfoil with a maximum camber of 7.6% at 49% 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 -7.6°.
Thin airfoil theory predicts a stall angle near 10.5° and a peak lift-to-drag ratio around 73 at typical UAV and light-aircraft Reynolds numbers — useful benchmarks before running a full XFOIL or NeuralFoil polar. The 15% thickness provides structural depth for main-spar placement without excessive drag penalty at moderate speeds.
Designers evaluating the GRIFFITH30SYMSUCTION typically compare it against profiles of similar thickness: GOE 228 (MVA H.38) AIRFOIL, GOE 386 AIRFOIL, GOE 441 AIRFOIL, USA 35 A AIRFOIL, USA 35 AIRFOIL. The AG04 is another reference profile frequently considered alongside it.
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Engineers evaluating the GRIFFITH30SYMSUCTION frequently compare it against profiles with comparable geometric constraints. Below are the closest matches based on maximum thickness (15.3%) and max camber (7.6%).
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