The Grumman X-29 Aircraft

The Grumman X-29 Aircraft - the most aerodynamically unstable aircraft ever built

Demonstrated forward-swept wing technology for supersonic fighter aircraft for the first time. Technology breakthroughs, among them a digital fly-by-wire flight-control system and carbon-fiber wing technology, made possible a lightweight design far more maneuverable than conventional aircraft.

Two X-29 aircraft, featuring one of the most unusual designs in aviation history forward wing sweep, were flown at the NASA Ames-Dryd