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AIRCRAFT AND CLASSICCAMBEREDSELIG-DATABASE

USA 40 B

Cambered · 14% thick · low-to-mid Re
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PROFILEUSA 40 B
surfacecamber line
GEOMETRY · AREA METRICS
max thickness13.6% @ 20%c
max camber4.0% @ 39%c
LE radius2.04%c
area upper / chord0.0710
area lower / chord-0.0124
area camber / chord0.0293
TE thickness0.00%c
DOWNLOAD COORDINATES

Polars

Preliminary
NeuralFoil
-0.2223-50.4293.3331.0811.671.73220ClAngle 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 0.06479% of chord; maximum error 0.3063%.

NeuralFoil 0.3.3 · AeroSandbox 4.2.10

Curve summary

NeuralFoil · Within -5° to 20°

Maximum lift / drag
148.1
Angle at maximum lift / drag (°)
6
Minimum Cd
0.006624
Maximum Cl
1.569
Angle at maximum Cl (°)
9
Cd at zero lift
0.007477
Cm at zero angle
-0.1141
CFD points
SOLVER WORK0 conditions · 0 engine jobs
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