Drag Polar Estimator
Fit a parabolic drag polar from two lift/drag coefficient points and evaluate a target lift coefficient.
Zero-lift drag
0.0196
CD0
Induced factor
0.0600
polar curvature K
Target drag coefficient
0.0346
at CL 0.500
Maximum L/D
14.58
CL* 0.572
Drag polar fit
Two measured points define the parabolic drag polar; the target point and best L/D point fall on the same fitted curve.
Open Source and Easy to Use Elsewhere
This tool is open source and the underlying logic is fully transparent. You can inspect the code, understand the calculations, and contribute improvements. If you want to use the tool in your own website, course page, or learning platform, you can also embed it directly and start from a ready-made iframe setup for this exact tool.
Open source: review the implementation and see how the results are produced.
Embeddable: preview this tool, copy the iframe, and use it in your own site or LMS.