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The Boeing X-20 Dyna-Soar ("Dynamic Soarer") was a United States Air Force (USAF) program to develop a spaceplane that could be used for a variety of military missions, including aerial reconnaissance, bombing, space rescue, satellite maintenance, and as a space interceptor to sabotage enemy satellites. [1]
14 December 1984. 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 General Dynamics X-62 VISTA ("Variable Stability In-flight Simulator Test Aircraft") [2] is an experimental aircraft, derived from the F-16D Fighting Falcon, which was modified as a joint venture between General Dynamics and Calspan for use by the United States Air Force (USAF). Originally designated NF-16D, the aircraft was redesignated X ...
The Boeing X-66 is an experimental airliner under development by Boeing. It is part of the X-plane series, and is being developed in collaboration with NASA and its Sustainable Flight Demonstrator program. It will use an extra-long and thin wing design stabilized by diagonal bracing struts, which is known as a Transonic Truss-Braced Wing.
The Bell X-22 is an American V/STOL X-plane with four tilting ducted fans. Takeoff was to selectively occur either with the propellers tilted vertically upwards, or on a short runway with the nacelles tilted forward at approximately 45°. Additionally, the X-22 was to provide more insight into the tactical application of vertical takeoff troop ...
From the X-100 Curtiss-Wright developed the larger X-200, of which the United States Air Force ordered two prototypes designated the X-19A. The X-19 had fore and aft high-mounted tandem wings . Each wing mounted two 13 ft (4.0 m) propellers that could be rotated through 90 degrees, allowing the aircraft to take off and land like a helicopter .
The Aurora X-65 CRANE is an experimental aircraft that is currently under development. In charge are the Defense Advanced Research Projects Agency (DARPA) and the Boeing subsidiary Aurora Flight Sciences .
The X-61 stemmed from the DARPA Gremlins program to demonstrate a recoverable, low-cost UAV with digital flight controls and navigation systems. It is designed to be recovered in midair by a modified transport airplane following its mission. [1] Dynetics was one of four companies to be awarded a Phase I contract for the program in 2016, and was ...