Aerospace components built around `@NACAProfile("4412", chord)` — a named generator for standard NACA airfoil sections, in the same family as `GearProfile` and `SuperformulaProfile`. The titanium blades are swept into a radial array around a cone+sphere nose spinner, all enclosed by a revolved outer shroud. Each blade is oriented with a three-axis rotation (chord, span, pitch) before being translated outward.