Airfoil Data
DAI1238

The DAI 1238 is a 11.2% chord-thickness airfoil with a maximum camber of 5.6% at 38% 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 DAI1238 typically compare it against profiles of similar thickness: FX 84-W-140, N-10, FX 63-145 AIRFOIL, GOE 29B AIRFOIL, GOE 655 AIRFOIL. The S4061-096-84 is another reference profile frequently considered alongside it.