ديناميكا هوائية - المعرفة
· التاريخ. A drawing of a design for a flying machine by Leonardo da Vinci (c. 1488). This machine was an ornithopter, with flapping wings similar to a , first appeared in his Codex on the Flight of Birds in 1505. A drawing of a glider by Sir George Cayley, one of the early attempts at creating an aerodynamic shape.