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Grumman X-29. The Grumman X-29 was 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]
List of X-planes. Bell X-1-2. The X-planes are a series of experimental United States aircraft and rockets, used to test and evaluate new technologies and aerodynamic concepts. They have an X designator within the US system of aircraft designations, which denotes the experimental research mission. Not all US experimental aircraft have been ...
Kh-29. The Kh-29 (Russian: Х-29; NATO: AS-14 'Kedge '; GRAU: 9M721) is a Soviet air-to-surface missile with a range of 10–30 km. It has a large warhead of 320 kg, has a choice of laser, infrared, active radar or TV guidance, and is typically carried by tactical aircraft such as the Su-24, Su-30, MiG-29K as well as the Su-25, giving these aircraft an expanded standoff capability.
The XB-29, Boeing Model 345, was the first accepted prototype or experimental model delivered to the Army Air Corps, incorporating a number of improvements on the design originally submitted, including more and larger guns and self-sealing fuel tanks. Two aircraft were ordered in August 1940, and a third was ordered in December.
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The Lockheed Martin X-59 Quesst ("Quiet SuperSonic Technology"), sometimes styled QueSST, is an American experimental supersonic aircraft under development by Skunk Works for NASA 's Low- Boom Flight Demonstrator project. [ 1] Preliminary design started in February 2016, with the X-59 planned to begin flight testing in 2021.
The RS-28 Sarmat (Russian: РС-28 Сармат, [8] named after the Sarmatians; [9] NATO reporting name: SS-X-29 [10] or SS-X-30 [11]), often colloquially referred to as Satan II by media outlets, is a three-stage Russian silo-based, liquid-fueled, HGV-capable and FOBS-capable super-heavy intercontinental ballistic missile (ICBM) produced by the Makeyev Rocket Design Bureau.
Xantus’ Swimming Crab. These crabs live in the shallow waters of the Gulf of California and have oversized front claws that they use for both defense and catching prey. Their ‘X’ name ...