Northrop N-1M
The Northrop N-1M (Northrop Model 1 Mockup), also known by the nickname "Jeep", is a retired American experimental aircraft used in the development of the flying wing concept by Northrop Aircraft during the 1940s. == Design and development == Jack Northrop became involved with all-wing aircraft designs in the late 1920s, with his first flying wing research prototype being built in the 1928–1930 time period.