Airfoil Data
USA35B
USA-35B AIRFOIL
Wing Geometry Simulator
The USA-35B AIRFOIL is a 9.0% chord-thickness airfoil with a maximum camber of 4.5% 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 -4.5°.
Thin airfoil theory predicts a stall angle near 11.8° and a peak lift-to-drag ratio around 61 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 USA35B appears in the wing design of at least 74 documented aircraft, including designs from Piper and Maule. 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 USA35B typically compare it against profiles of similar thickness: NACA 16-018, GOE 559 AIRFOIL, Dormoy, CLARK X AIRFOIL, NACA 66-018. The NPL 9626 AIRFOIL is another reference profile frequently considered alongside it.
Aircraft Using the USA35B Airfoil
Aircraft Association J-2 Cub | Aircraft | USA 35B | Constant |
American Eagle 251 Phaeton | American | USA 35B | Constant |
American Eagle J5 Phaeton | American | USA 35B | Constant |
American Eagle R-540 Phaeton | American | USA 35B | Constant |
Anahuac Tauro 300 | Anahuac | USA 35B | Constant |
Anahuac Tauro 350 | Anahuac | USA 35B | Constant |
Anderson EA-1 Kingfisher | Anderson | USA 35B | Constant |
Birdman RB-1 | Birdman | USA 35B | Constant |
Birdman TL-1 | Birdman | USA 35B | Constant |
Chincul Pawnee | Chincul | USA 35B | Constant |
Custom Flight North Star | Custom | USA 35B | Constant |
Datwyler 1038 MDC-Trailer | Datwyler | USA 35B | Constant |
Davis DA-7 | Davis | USA 35B | Constant |
de Havilland Canada DHC-1 Chipmunk | De Havilland | NACA 2415 | USA 35B |
Gippsland GA200 Fatman | Gippsland | USA 35B | Constant |
Hindustan Aeronautics Ltd HA-31 Basant | Hindustan | USA 35B | Constant |
Institute of Science & Technology XL-15 | Institute | NACA 23012 | USA 35B |
IPTN NU-150 Kindjeng | IPTN | USA 35B | Constant |
IPTN NU-35 Kunang | IPTN | USA 35B | Constant |
IPTN NU-85 Belalang | IPTN | USA 35B | Constant |
Wing lofting: 6 of these aircraft taper from USA35B at the root to a different tip section. Use the Tapered filter to isolate them, then click any tip airfoil link to compare geometries.
Related Airfoils
Engineers evaluating the USA35B frequently compare it against profiles with comparable geometric constraints. Below are the closest matches based on maximum thickness (9.0%) and max camber (4.5%).