Airfoil Data
NACA4424

The NACA 4424 is a thick 15.7% chord-thickness airfoil with a maximum camber of 7.9% at 29% 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 -7.9°.

Thin airfoil theory predicts a stall angle near 10.3° 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 16% thickness provides structural depth for main-spar placement without excessive drag penalty at moderate speeds.

The NACA4424 appears in the wing design of at least 1 documented aircraft — notably by Hunting. Its proven track record across canard designs makes it one of the more field-validated profiles in the UIUC database.

Designers evaluating the NACA4424 typically compare it against profiles of similar thickness: RONCZ 1046 VOYAGER CANARD AIRFOIL, GOE 522 AIRFOIL, E423, USA 31 AIRFOIL, EPPLER 421 AIRFOIL. The NACA 4415 is another reference profile frequently considered alongside it.