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The Vertical Take-Off and Landing Experimental Aircraft (VTOL X-Plane) program is an American research project sponsored by the Defense Advanced Research Projects Agency (DARPA). The goal of the program is to demonstrate a VTOL aircraft design that can take off vertically and efficiently hover, while flying faster than conventional rotorcraft. There have been many previous attempts, most of them unsuccessful. Aurora Flight Sciences was selected to create a test design, which will fly in 2018.

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  • Aurora LightningStrike (de)
  • VTOL X-Plane (ja)
  • VTOL X-Plane (en)
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  • Die Aurora LightningStrike ist ein VTOL-fähiges unbemanntes Luftfahrzeug (UAV), von dem zuerst ein maßstäblich verkleinerter Demonstrator gebaut wurde. Das endgültige Experimentalflugzeug, das nach der Einstellung des Programms nicht mehr realisiert werden konnte, sollte die US-militärische Bezeichnung XV-24 erhalten. (de)
  • VTOL X-Planeは国防高等研究計画局(DARPA)が進める垂直離着陸機（VTOL機）の計画。 (ja)
  • The Vertical Take-Off and Landing Experimental Aircraft (VTOL X-Plane) program is an American research project sponsored by the Defense Advanced Research Projects Agency (DARPA). The goal of the program is to demonstrate a VTOL aircraft design that can take off vertically and efficiently hover, while flying faster than conventional rotorcraft. There have been many previous attempts, most of them unsuccessful. Aurora Flight Sciences was selected to create a test design, which will fly in 2018. (en)
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  • Die Aurora LightningStrike ist ein VTOL-fähiges unbemanntes Luftfahrzeug (UAV), von dem zuerst ein maßstäblich verkleinerter Demonstrator gebaut wurde. Das endgültige Experimentalflugzeug, das nach der Einstellung des Programms nicht mehr realisiert werden konnte, sollte die US-militärische Bezeichnung XV-24 erhalten. (de)
  • The Vertical Take-Off and Landing Experimental Aircraft (VTOL X-Plane) program is an American research project sponsored by the Defense Advanced Research Projects Agency (DARPA). The goal of the program is to demonstrate a VTOL aircraft design that can take off vertically and efficiently hover, while flying faster than conventional rotorcraft. There have been many previous attempts, most of them unsuccessful. A helicopter with a conventional rotor layout has a theoretical top speed of 200 knots (230 mph; 370 km/h), after which it suffers from dissymmetry of lift. Some designs have successfully created hovering and high-speed aircraft, including the Bell Boeing V-22 Osprey tiltrotor that can fly at 275 knots (316 mph; 509 km/h) and the Sikorsky X2 compound helicopter that flew at 260 knots (300 mph; 480 km/h), but both made significant aerodynamic compromises to hovering efficiency or range. DARPA's goal is to demonstrate a VTOL aircraft that can achieve a sustained top speed of 300 to 400 knots (345 to 460 mph (555 to 740 km/h)). All competitors for the program opted to demonstrate their concepts using an unmanned aerial vehicle even though it was not required, but the technologies are intended to be applied to manned aircraft as well. Aurora Flight Sciences was selected to create a test design, which will fly in 2018. (en)
  • VTOL X-Planeは国防高等研究計画局(DARPA)が進める垂直離着陸機（VTOL機）の計画。 (ja)
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