X-29A

"The Grumman X-29 was an experimental aircraft that explored a number of new technologies; the most immediately obvious being the forward-swept wings and canard control surface. The inherent aerodynamic instability of this arrangement required the use of computerized fly-by-wire control, and advanced composite materials were needed to make the wing sufficiently rigid without being unacceptably heavy. The Grumman X-29 first flew in 1984 and two Grumman X-29s were flight tested over the next decade. Two Grumman X-29As were built by Grumman Aerospace Corporation, the first flight taking place in 1984. The aircraft were adapted from existing Northrop F-5A Freedom Fighter airframes (after the proposal had been chosen over a competing one involving a General Dynamics F-16 Fighting Falcon) The Grumman X-29A demonstrated excellent control and maneuvering qualities at an angle of attack up to 45 degrees. There was also a decrease in turbulence. The first Grumman X-29 craft built is now on display in the National Museum of the United States Air Force at Wright-Patterson Air Force Base near Dayton, Ohio. The other Grumman X-29 craft is on display at the Dryden Flight Research Center on Edwards Air Force Base "