Wind Tunnel is the visual language of the dark test section: an airfoil back-lit so pale smoke filaments — or laser-sheet-illuminated seed particles — trace streamlines as bright cool-white-cyan lines against a near-black ground. It is classic NACA/NASA flow visualization, where darkness maximises the contrast of the illuminated flow.

The system pairs technical monospace annotation with a precise grotesque, turning every surface into an instrument panel: angle-of-attack readouts, measurement ticks, and glowing streamlines over a deep tunnel-interior backdrop.