The Birthday of the Wright Brothers (First Flight, 1903)

The Wright Flyer flew on 17 December 1903. The mathematics of flight: lift equation L = ½ ρ v² S C_L, drag D = ½ ρ v² S C_D. The Wrights built a wind tunnel to measure coefficients. They also invented three‑axis control (pitch, roll, yaw) – a problem in kinematics and control theory. The stability of an aircraft is described by differential equations (eigenvalues). Their flight lasted 12 seconds – a testament to mathematical design. Today, we fly because of numbers.