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CAMBEREDNACA 6-SERIESSELIG-DATABASETHICK

NACA 65(4)-221

Cambered · 21% thick · low-to-mid Re
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PROFILENACA 65(4)-221
surfacecamber line
GEOMETRY · AREA METRICS
max thickness21.0% @ 40%c
max camber1.1% @ 50%c
LE radius4.85%c
area upper / chord0.0749
area lower / chord-0.0586
area camber / chord0.0082
TE thickness0.00%c
DOWNLOAD COORDINATES

Polars

Preliminary
Combined estimate
-0.6247-50.043123.3330.710911.671.37920ClAngle of attack (°)
Why this curve

This curve combines the stored NeuralFoil prediction with 1 contributing CFD observations. History windows remain observations, not separate solver runs or automatically converged points.

Model uncertainty is conditional on the stated assumptions and has not been calibrated for this condition. It is not a validated accuracy guarantee.

Geometry fit: RMS error 0.04023% of chord; maximum error 0.1274%.

NeuralFoil 0.3.3 · AeroSandbox 4.2.10 · Polar model progressive-polar-gp-v2

  • · Converged

Curve summary

Combined estimate · Within -5° to 20°

Maximum lift / drag
70.56
Angle at maximum lift / drag (°)
7
Minimum Cd
0.01294
Maximum Cl
1.212
Angle at maximum Cl (°)
8
Cd at zero lift
0.01296
Cm at zero angle
-0.04701
CFD points
SOLVER WORK0 conditions · 0 engine jobs
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