If you are an aviation enthusiast, you might enjoy adding one of our airplane posters to your collection. Leonardo da Vinci explored the concept of airplane flight during the 15th century. However, he never constructed any of his crafts. Sir George Cayley is considered by many to be the father of the airplane. He designed a fixed-winged craft in 1799 and constructed the glider in 1846. Two years later, his tri-plane glider lifted a child.