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全球最大双机身飞机在美国加州下线(组图)
2017-06-01 11:51:42 中国青年网
报道称,它首先将展开包括加油测试在内的连串地面测试,机上有6个油箱,将分别进行加油机制测试,并检查是否会漏油。
Stratolaunch正致力研发降低发射成本的技术,该公司执行长弗洛伊德认为,他们已经展现了相关成效。他指出,艾伦投资的动机不是赚大钱,而是要改变人类的环境。
此外,弗洛伊德指出,他们正积极开发更多发射物,以提供顾客更多弹性。不过,他并未说明,这些发射物是什么。
而这架飞机在机翼下方、双机身的中间,可以携带重达110吨的火箭,从地面飞到平流层3.5万英尺的高空,接着让火箭点火、发射、脱离大气层,继而送卫星进入近地轨道。
报道称,空射与地面发射火箭相比,虽有优点也有缺点。优点在于空射火箭,得以避开地表浓密的大气,大大减少火箭进入轨道所需的推力/升力,从而降低成本。整体来说,这种发射方式能以较低成本,将发射物快速送入太空,而无需复杂的发射场设备。此外,研究空射火箭技术也有巨大的军事价值。
而空射火箭的缺点,在于飞机起飞、升空与飞行过程中,可能会意外损及火箭,进而增加发射的不确定性。SpaceX创办人马斯克便认为,空射火箭的优点并不足以弥补它的缺点,“从SpaceX的观点来看,用巨大的飞机来发射火箭,或是把火箭的第一级容量增大5%?我会选后者。”
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