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The Grumman X-29 is an American experimental aircraft that tested a forward-swept wing, canard control surfaces, and other novel aircraft technologies. Funded by NASA, the United States Air Force and DARPA, the X-29 was developed by Grumman, and the two built were flown by NASA and the United States Air Force. [1]
The X-29, an experimental plane flown by NASA in the 1980s, sports one of the most unusual designs in the history of aviation.
x-29はアメリカ合衆国のグラマン社によって2機が製作された実験用航空機（実験機）である。x-プレーンズのひとつ。前進翼をはじめとする多くの新技術を実証した。
The X-29 program did demonstrate several new technologies as well as new uses of proven technologies including aeroelastic tailoring to control structural divergence and use of a relatively large, close-coupled canard for longitudinal control.
On Dec. 13, 1985, the X-29 became the first forward-swept-wing airplane in the world to exceed Mach 1 in level flight, and flight results showed that a highly unstable aircraft with forward-swept wings could be flown safely with excellent maneuverability and high G-loads.
One of the strangest looking airplanes ever flown in modern times, its extraordinary story is told in “Sweeping Forward: Developing and Flight Testing the Grumman X-29A Forward Swept Wing Research Aircraft,” the latest publication in NASA’s aeronautics book series.
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