Airfoil Data
C5A
LOCKHEED C-5A BL0 AIRFOIL
Wing Geometry Simulator
The LOCKHEED C-5A BL0 AIRFOIL is a thin 6.6% chord-thickness airfoil with a maximum camber of 3.3% at 45% chord, suited to high-speed UAVs, sailplane tip sections, and propeller blade design. At zero angle of attack the cambered geometry generates positive lift, giving an estimated zero-lift angle of -3.3°.
Thin airfoil theory predicts a stall angle near 11.9° and a peak lift-to-drag ratio around 54 at typical UAV and light-aircraft Reynolds numbers — useful benchmarks before running a full XFOIL or NeuralFoil polar. The slim profile minimises pressure drag at higher speeds but leaves limited spar depth for structural integration.
Designers evaluating the C5A typically compare it against profiles of similar thickness: MH 61 10.26%, BOEING 707 .40 SPAN AIRFOIL, GOE 411 AIRFOIL, S8065 (11% version of S8064), MH 45 9.85%. The IST-MT1-12 is another reference profile frequently considered alongside it.
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Engineers evaluating the C5A frequently compare it against profiles with comparable geometric constraints. Below are the closest matches based on maximum thickness (6.6%) and max camber (3.3%).
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