Airfoil Data
GOE398

The GOE 398 AIRFOIL is a 11.7% chord-thickness airfoil with a maximum camber of 5.8% at 30% 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.

The GOE398 appears in the wing design of at least 76 documented aircraft, including designs from Iniziative and Martin. Its proven track record across conventional and rotorcraft designs makes it one of the more field-validated profiles in the UIUC database.

Designers evaluating the GOE398 typically compare it against profiles of similar thickness: EPPLER 552 AIRFOIL, NACA CYH, USA 27 mod. AIRFOIL, STRAND AIRFOIL, EPPLER 580 AIRFOIL. The GOE 276 (DAIMLER VII) AIRFOIL is another reference profile frequently considered alongside it.