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USA 40 AIRFOIL

Cambered · 13% thick · low-to-mid Re
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PROFILEUSA 40 AIRFOIL
surfacecamber line
GEOMETRY · AREA METRICS
max thickness13.3% @ 30%c
max camber4.2% @ 40%c
LE radius1.95%c
area upper / chord0.0719
area lower / chord-0.0122
area camber / chord0.0299
TE thickness0.10%c
DOWNLOAD COORDINATES

Polars

Preliminary
NeuralFoil
-0.1905-50.50013.3331.19111.671.88120ClAngle of attack (°)
Why this curve

This is a NeuralFoil prediction from the stored profile coordinates and the selected flow condition, with AeroSandbox compressibility corrections. It is not a completed OpenFOAM calculation.

Prediction error has not been calibrated for this condition. No accuracy interval is claimed.

The compressibility correction is a low-fidelity estimate, not a resolved shock or compressible CFD solution.

Geometry fit: RMS error 0.06421% of chord; maximum error 0.3129%.

NeuralFoil 0.3.3 · AeroSandbox 4.2.10

Curve summary

NeuralFoil · Within -5° to 20°

Maximum lift / drag
155.6
Angle at maximum lift / drag (°)
7
Minimum Cd
0.006605
Maximum Cl
1.709
Angle at maximum Cl (°)
9
Cd at zero lift
0.007377
Cm at zero angle
-0.135
CFD points
SOLVER WORK0 conditions · 0 engine jobs
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