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CAMBEREDEPPLERSELIG-DATABASE

E221 (9.39%)

Cambered · 9% thick · low-to-mid Re
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PROFILEE221 (9.39%)
surfacecamber line
GEOMETRY · AREA METRICS
max thickness9.4% @ 28%c
max camber1.8% @ 33%c
LE radius0.97%c
area upper / chord0.0405
area lower / chord-0.0203
area camber / chord0.0101
TE thickness0.00%c
DOWNLOAD COORDINATES

Polars

Preliminary
Combined estimate
-0.6745-5-0.05793.3330.558711.671.17520ClAngle of attack (°)
Why this curve

This curve combines the stored NeuralFoil prediction with 0 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 0.01721% of chord; maximum error 0.07551%.

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

Curve summary

Combined estimate · Within -5° to 20°

Maximum lift / drag
116.7
Angle at maximum lift / drag (°)
6
Minimum Cd
0.006052
Maximum Cl
1.021
Angle at maximum Cl (°)
8
Cd at zero lift
0.006054
Cm at zero angle
-0.00426
CFD points
SOLVER WORK0 conditions · 0 engine jobs
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