section_heading: Zrakoplovstvo
paragraph_text: Abbas Ibn Firnas (Armen Firnas) u 9. stoljeću u islamskoj Španjolskoj otkrio je primitivnu verziju padobrana.Poore, Daniel. A History of Early Flight. New York: Alfred Knopf, 1952.Smithsonian Institution. Manned Flight. Pamphlet 1990.<ref>David W. Tschanz, Flights of Fancy on Manmade Wings, IslamOnline.net.<ref>Parachutes , Principles of Aeronautics, Franklin Institute. John H. Lienhard opisuje taj izum u djelu The Engines of Our Ingenuity (Strojevi naše domišljatosti) na sljedeći način: