Design an Airfoil in Solidworks

A: Governing principle: Geometry continuity is a prerequisite for any downstream validity. Here, a non-closed spline at the trailing edge silently breaks section integrity and propagates errors into meshing, CAM, and mass properties. You catch that before checking ratios or weights. Option C traps engineers who jump to performance metrics without first confirming the profile is topologically sound.

A: Governing principle: Airfoil tables encode surface order, not just shape. Starting at x=1.0 and returning there is a standard TE–LE–TE traversal, and misreading it flips surfaces or creates self-intersections. Option B catches people used to CFD grids where axis mirroring is common, but that's not what this pattern indicates.

A: Governing principle: Model material should reflect service environment, not end-use aspiration. Salt fog and repeated layups attack aluminum through pitting and contaminate composites; sealed tooling board matches actual degradation drivers. Option B tempts engineers who chase stiffness parity and ignore corrosion and contamination pathways.

A: Governing principle: Fix orientation errors at the lowest feature level. Correcting the sketch plane normal preserves design intent and avoids handedness errors in derived features. Option B snares people who treat solids as static geometry and forget downstream parametric dependencies.