
Scaled Composites Model 348 | |
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国家 | 美国 |
作用 | 飞行航天飞机承运人 |
首次飞行 | 2008年12月21日 |
建立 | 1 |
这 缩放复合材料型号 348 White Knight Two (WK2) is a quadjet cargo aircraft that is used to lift the SpaceShipTwo spacecraft to release altitude. It was developed by Scaled Composites from 2007 to 2010 as the first stage of Tier 1b, a two-stage to suborbital-space manned launch system. WK2 is based on the successful mothership to SpaceShipOne, White Knight, which itself is based on Proteus. With an “open architecture” design and explicit plans for multi-purpose use, the aircraft could also operate as a zero-g aircraft for passenger training or microgravity science flights, handle missions in high-altitude testing more generally, or be used to launch payloads other than SpaceShipTwo. A study of use of the aircraft as a forest fire water bomber has also been mentioned, one that would utilize a large carbon composite water tank that could be quickly replenished to make repeat runs over fires.
Scaled Composites Model 348 WhiteKnightTwo Walk Around | |
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Photographer | Vladimir Yakubov |
Localisation | Edwards Air Force Base Air Show |
Photos | 105 |

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这 缩放复合材料型号 348 is a twin-fuselage aircraft designed and built by Scaled Composites, a subsidiary of Northrop Grumman. The aircraft is intended to serve as a carrier for the Stratolaunch air launch system, which aims to launch orbital rockets from high altitude. The Model 348 has a wingspan of 117 m (385 ft), making it the largest aircraft by wingspan ever flown. It is powered by six Pratt & Whitney PW4056 turbofan engines, each producing 252 kN (56,750 lbf) of thrust.
该飞机可携带高达250,000千克(550,000磅)的有效载荷,最大起飞重量为589,670千克(130万磅)。348 型于 2019 年 4 月 13 日首飞,此后进行了多次试飞,以评估其性能和操控特性。该飞机预计将在本世纪20年代中期开始发射火箭,第一个客户是Orbital ATK,该公司计划使用Stratolaunch系统发射其Pegasus XL火箭。
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