Airplane

One reason airplane meals taste flat is cabin pressure. Cabins mimic 1,800–2,400 m altitude and dry nasal passages. A 2010 Fraunhofer experiment found sweet and salty taste sensitivity fell ~30%, so airlines emphasize umami and tomato juice.

An airplane doesn't turn by steering left or right like a car. With no friction in the air, that would cause it to drift sideways. Instead, it banks its body to redirect lift, and the horizontal component acts as centripetal force to make the turn.

NASA's AD-1 was an oblique wing aircraft — one wing pointing forward, the other backward. At supersonic speeds, swept wings reduce drag, but sweeping both shifts the center of lift. The oblique wing solved this by rotating both wings on a single pivot.