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For aircraft in the sequence designated before 1962, see List of United States Air Force aircraft designations (1919–1962) § X: Special Research/Experimental (1948–1962). X-21 – Northrop; X-22 – Bell; X-23 PRIME – Martin Marietta (unofficial) [2] X-24 – Martin Marietta; X-25 – Bensen; X-26 Frigate – Schweizer; X-27 – Lockheed ...
Additionally, the X-22 was to provide more insight into the tactical application of vertical takeoff troop transporters such as the preceding Hiller X-18 and the X-22's successor, the Bell XV-15. Another program requirement was a true airspeed in level flight of at least 525 km/h (326 mph; 283 knots).
The RQ-3 DarkStar (known as Tier III-or "Tier three minus" during development) is an unmanned aerial vehicle (UAV). Its first flight was on March 29, 1996. Its first flight was on March 29, 1996. The Department of Defense terminated DarkStar in January 1999, after determining the UAV was not aerodynamically stable and was not meeting cost and ...
The X-44 design had a reduced radar signature (due to lack of tail and vertical stabilizers) and was made more efficient by eliminating the tail and rudder surfaces, and instead using thrust vectors to provide yaw, pitch and roll control. [1] The X-44 MANTA design was based on the F-22. The engine and fuselage would be carried over to the X-44.
The resulting X-44A (although apparently unrelated to the previously developed X-44 MANTA) was built in 1999 and first flew in 2001, [1] representing an interim design between the Darkstar and P-175 Polecat. However, Lockheed Martin kept the X-44A under wraps until February 2018. [1] [2] [3] The X-44A successfully tested multiple technologies.
Bell X-22, an American experimental aircraft; Kh-22 (Russian: X-22), a Soviet anti-ship missile; Paul Magriel (1946–2018), American professional backgammon and poker player; TGOJ X22, a Swedish electric multiple unit; ThinkPad X22, a notebook computer \x22, the quotation mark (Unicode codepoint hex &x22;)
The X-Air Hanuman is a single-engined high-wing monoplane with side-by-side seats for the pilot and a passenger. The aircraft is manufactured with an 85 hp (63 kW) four-cylinder four-stroke 2.2 litre Jabiru 2200 engine, which can be run on automotive fuel. The 64 hp (48 kW) Rotax 582 two-stroke, the 80 hp (60 kW) Rotax 912UL are also options.
Boeing X-45 at the National Museum of the United States Air Force. On February 4, 2005, on their 50th flight, the two X-45As took off into a patrol pattern and were then alerted to the presence of a target. The X-45As then autonomously determined which vehicle held the optimum position, weapons (notional), and fuel load to properly attack the ...