Optimization turns analysis into design. HFOIL supports shape exploration so you can move toward target Cl, Cd, or pitching-moment behaviour instead of guessing by hand.
Set a clear objective
Examples: maximize Cl/Cd at cruise, raise Cl max without a sharp stall, or reduce nose-down Cm for a tailless layout. Vague objectives produce vague shapes.
Constraint the geometry
Keep thickness, leading-edge radius, and manufacturing limits in mind. An optimized airfoil that cannot be built or that is too thin for structure is not a win.
Validate every candidate
Re-run viscous analysis on the optimized section and inspect geometry in the viewport. Treat optimization as a proposal generator, not a final authority.
Engineering takeaway
Airfoil selection is a trade among lift, drag, stall gentleness, and pitching moment. Document Reynolds number, Mach assumptions, and geometry provenance whenever you share polars with a team.
How HFOIL helps you act
Use HFOIL on Windows to iterate sections, generate polars, move into wing loading, and prepare review-ready plots. For licensing in any country, use Contact Us or email support@hendoi.com.
Learn more
Students: treat each case as a lab notebook entry. Companies: shortlist two or three sections before freezing CAD. Academies: assign compare-and-justify exercises using batch plots.