Airfoil Data
E393
EPPLER 393 AIRFOIL
Wing Geometry Simulator
The EPPLER 393 AIRFOIL is a 9.6% chord-thickness airfoil with a maximum camber of 4.8% at 37% 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 -4.8°.
Thin airfoil theory predicts a stall angle near 11.7° and a peak lift-to-drag ratio around 62 at typical UAV and light-aircraft Reynolds numbers — useful benchmarks before running a full XFOIL or NeuralFoil polar. The slim profile minimises pressure drag at higher speeds but leaves limited spar depth for structural integration.
The E393 appears in the wing design of at least 3 documented aircraft — notably by Nihon. Its proven track record across rotorcraft designs makes it one of the more field-validated profiles in the UIUC database.
Designers evaluating the E393 typically compare it against profiles of similar thickness: NACA 63-415 AIRFOIL, SOKOLOV AIRFOIL, EPPLER STE 871-514 AIRFOIL, ONERA OA213 AIRFOIL, EPPLER 407 AIRFOIL. The NACA 0010-34 is another reference profile frequently considered alongside it.
Aircraft Using the E393 Airfoil
Nihon University NM-?? Swift A | Nihon | Eppler 393 | Constant |
Nihon University NM-?? Swift B | Nihon | Eppler 393 | Constant |
Nihon University NM-?? Swift C | Nihon | Eppler 393 | Constant |
Related Airfoils
Engineers evaluating the E393 frequently compare it against profiles with comparable geometric constraints. Below are the closest matches based on maximum thickness (9.6%) and max camber (4.8%).