Airfoil Data
B737D

The BOEING 737 OUTBOARD AIRFOIL is a thin 6.8% chord-thickness airfoil with a maximum camber of 3.4% at 40% 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 -3.4°.

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 B737D typically compare it against profiles of similar thickness: St. CYR 172 (Royer), GOE 565 AIRFOIL, S3016-095-87, S9000 (9%), LOCKHEED C-5A BL758.6 AIRFOIL. The GOE 456 AIRFOIL is another reference profile frequently considered alongside it.