Airfoil Data
USA29

The USA 29 AIRFOIL is a 11.5% chord-thickness airfoil with a maximum camber of 5.8% at 40% 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 -5.8°.

Thin airfoil theory predicts a stall angle near 11.6° and a peak lift-to-drag ratio around 68 at typical UAV and light-aircraft Reynolds numbers — useful benchmarks before running a full XFOIL or NeuralFoil polar. The 12% thickness provides structural depth for main-spar placement without excessive drag penalty at moderate speeds.

Designers evaluating the USA29 typically compare it against profiles of similar thickness: NACA 63(4)-221, EPPLER 396 AIRFOIL, EPPLER 554 AIRFOIL, GOE 530 AIRFOIL, GOE 769 AIRFOIL. The GOE 325 (PFALZ 54) AIRFOIL is another reference profile frequently considered alongside it.