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USA 31 AIRFOIL

Cambered · 15% thick · low-to-mid Re
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PROFILEUSA 31 AIRFOIL
surfacecamber line
GEOMETRY · AREA METRICS
max thickness14.8% @ 20%c
max camber9.3% @ 40%c
LE radius2.43%c
area upper / chord0.1097
area lower / chord0.0092
area camber / chord0.0594
TE thickness0.00%c
DOWNLOAD COORDINATES

Polars

Preliminary
NeuralFoil
0.1264-50.7263.3331.32611.671.92520ClAngle 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 0.08853% of chord; maximum error 0.3768%.

NeuralFoil 0.3.3 · AeroSandbox 4.2.10

Curve summary

NeuralFoil · Within -5° to 20°

Maximum lift / drag
108.2
Angle at maximum lift / drag (°)
5
Minimum Cd
0.008276
Maximum Cl
1.775
Angle at maximum Cl (°)
12
Cd at zero lift
—
Cm at zero angle
-0.1585
CFD points
SOLVER WORK0 conditions · 0 engine jobs
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