Leonardo da Vinci designed a glider concept with a rigid wing intended to use air currents for flight.
Unlike his ornithopters, which attempted to imitate the flapping motion of birds, Leonardo’s gliding designs relied on fixed wings. His notebooks include studies of wing shapes, balance, and the way birds soar. The pilot would have needed to launch from an elevated position or slope and remain supported by moving air.
Leonardo understood that a machine could stay aloft without flapping if its wings generated sufficient lift. However, his designs lacked the aerodynamic testing, lightweight structures, and control systems needed for safe manned flight. No confirmed Leonardo glider flight is recorded.
A glider differs from an airplane because it has no engine. It also differs from a parachute, which primarily slows descent rather than producing controlled forward flight. Leonardo’s glider studies helped connect natural flight observation with mechanical experimentation.