Low-speed wind tunnel tests were conducted on sharp edge flat 60º delta wing, the wing with leading edge vortex flap deflected 30º and 60º delta wing with well rounded leading edge to estimate the effects of leading edge vortex flap and leading edge radius on the aerodynamic performance of 60º delta wings. Results indicate that the leading edge vortex flap can increase lift/drag ration of up to 19%, well rounded leading edge can increase further lift/drag ratio of up to 39%. Starting in 1946 as the College of Aeronautics, the Cranfield Institute of Technology was granted university status in 1969. In 1993 it changed its name to Cranfield University.