Airfoils.Pro
database / Other families / AH 81-131
CAMBEREDOTHER FAMILIESSELIG-DATABASE

AH 81-131

Cambered · 13% thick · low-to-mid Re
Compare↓ Download
PROFILEAH 81-131
surfacecamber line
GEOMETRY · AREA METRICS
max thickness13.1% @ 40%c
max camber2.8% @ 40%c
LE radius1.88%c
area upper / chord0.0585
area lower / chord-0.0270
area camber / chord0.0158
TE thickness0.00%c
DOWNLOAD COORDINATES

Polars

Preliminary
NeuralFoil
-0.7044-5-0.026343.3330.651811.671.3320ClAngle 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 0.02085% of chord; maximum error 0.05199%.

NeuralFoil 0.3.3 · AeroSandbox 4.2.10

Curve summary

NeuralFoil · Within -5° to 20°

Maximum lift / drag
117.4
Angle at maximum lift / drag (°)
7
Minimum Cd
0.006518
Maximum Cl
1.16
Angle at maximum Cl (°)
9
Cd at zero lift
0.00654
Cm at zero angle
0.007801
CFD points
SOLVER WORK0 conditions · 0 engine jobs
Loading solver work…