In the United States, from the 1930s Jack Northrop and Cheston L. Eshelman independently worked on their own designs. The Northrop N-1M, a scale prototype for a long-range bomber, first flew in 1940.[13] The Eshelman FW-5, which was commonly referred to as The Wing, was an experimental cabin monoplane.[14] Other 1930s examples of true flying wings include Frenchman Charles Fauvel's AV3 glider of 1933 and the American Freel Flying Wing glider flown in 1937.[15] featuring a self-stabilizing airfoil on a straight wing.[citation needed]