A Multi-Objective Practice Case of Supercritical Airfoil Design

Supercritical airfoil design is a real-world engineering example of EvoX as amulti-objective practice case. Changes in airfoil geometry parameters simultaneously affect multiple aerodynamic metrics, and the design must satisfy strict constraints on lift, angle of attack, thickness, and more; the focus of this practice is not to find a single optimal solution, but to generate adiverse set of candidate solutions, leaving it to domain experts to evaluate the different benefits and trade-offs.

• Conflicting Objectives:The camber, thickness, trailing edge, and other geometry parameters of a supercritical airfoil are coupled with one another. Improving one metric often comes at the expense of another, and conflicts among objectives are common. Multi-objective trade-offs are therefore required, rather than single-objective optimization.
• Strict Constraints:Requirements on lift, angle of attack, thickness, and more define the feasible design space. The search must be conducted within these constraints to ensure the candidate solutions are engineering-ready.
• Candidate Set Output:EvoX turns the output into a diverse set of solutions that balance various metrics, rather than a single answer; the candidate set supports expert comparison, trade-off, and decision-making.
• Methodological Value:This case demonstrates the value of "turning a real, complex problem into an explorable process" — finding interpretable, evaluable trade-off solutions amid constraints and conflicting objectives.

The roadmap below summarizes this process: continuous exploration in the airfoil parameter space, then approaching the multi-objective trade-off frontier, and finally forming a candidate set for expert evaluation.