Airfoil Data
USA34

The USA 34 AIRFOIL is a thick 16.4% chord-thickness airfoil with a maximum camber of 8.2% at 39% 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 -8.2°.

Thin airfoil theory predicts a stall angle near 10.1° and a peak lift-to-drag ratio around 74 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.

Designers evaluating the USA34 typically compare it against profiles of similar thickness: GOE 243 (MVA PR.3) AIRFOIL, GOE 518 AIRFOIL, GOE 482 AIRFOIL, MI-STRUT1, CH10 (smoothed). The AH-7-47-6 AIRFOIL is another reference profile frequently considered alongside it.