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Since 1990, Aviation Weekly and Aerospace Technology has received about a dozen eyewitness reports on a strange aircraft, the most recent of which was from last year. Many reports are accompanied by sketches of such mysterious aircraft drawn by eyewitnesses. Taken together, the aircraft looks like a prototype of the XB-70 "Valkyrie" strategic bomber made by the North American Aircraft Company in the 1960s. According to sources from the industry, the US Air Force may have built two space shuttles similar in shape to the XB-70, one of which has crashed and the other in the US Air Force's Lake Grum in Nevada. GroomLake), but the test site is a confidential unit. It has long been speculated that it is a spacecraft launching platform that was not confirmed indirectly until 1998. The mother ship's public number is SR-3, which is reported to be a supersonic high-altitude launch platform for launching the highly confidential XOV space shuttle. According to the eyewitness report, the aircraft is 180 feet to 200 feet (54.86 meters to 60.96 meters) in length, painted in light color, with a pointed delta wing layout, the overall shape is similar to XB-70; the rear of the cockpit is equipped with movable duck wings. The mounting height is approximately half the height of the fuselage section. Some witnesses said that their duck wings are swept forward, while others are called swept back. Therefore, the duck wings may adopt manual or automatic adjustment of the sweep angle according to flight conditions; the back ridge extends from the cockpit to the tail, and the length is at least It has two-thirds of the length of the whole machine and is painted black; the upper part of the wing tip has small wings and is inclined outwards, which may be used as a vertical stabilizer; there are at least four tail nozzles on both sides of the fuselage center line The symmetry is arranged in a concentrated manner, and the tail nozzle areas on both sides are well separated; the abdomen of the body is not smooth, and there are several joint parts and curved areas, which are somewhat like the upper surface of the B-2A stealth bomber.
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