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NN7 MK20

Cambered · 17% thick · low-to-mid Re
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PROFILENN7 MK20
surfacecamber line
GEOMETRY · AREA METRICS
max thickness16.8% @ 37%c
max camber3.0% @ 60%c
LE radius3.13%c
area upper / chord0.0754
area lower / chord-0.0295
area camber / chord0.0230
TE thickness0.00%c
DOWNLOAD COORDINATES

Polars

Preliminary
NeuralFoil
-0.2904-50.35683.3331.00411.671.65120ClAngle 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 0.01977% of chord; maximum error 0.06306%.

NeuralFoil 0.3.3 · AeroSandbox 4.2.10

Curve summary

NeuralFoil · Within -5° to 20°

Maximum lift / drag
144.4
Angle at maximum lift / drag (°)
7
Minimum Cd
0.006943
Maximum Cl
1.489
Angle at maximum Cl (°)
9
Cd at zero lift
0.006944
Cm at zero angle
-0.1157
CFD points
SOLVER WORK0 conditions · 0 engine jobs
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