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中国最大推力新一代运载火箭长征五号于2016年11月3日从中国海南岛文昌航天发射场发射升天,标志着中国跨过了航天强国门槛,它的芯级直径5 m,外围的4个助推器直径3.35 m,身高约57 m,芯级火箭推进剂为-253℃的液氢与-183℃的液氧,助推器的推进剂为液氧与煤油,它们的贮箱是用铝合金焊接的,但所用的铝合金种类未见媒体报道,笔者认为应该是用2219型铝合金板焊接的。对2219型铝合金作了较详细的介绍。
China’s largest new-generation launch vehicle, Long March 5, was launched from the Wenchang Space Launch Site on Hainan Island, China, on November 3, 2016, marking China’s crossing of the space power threshold of 5 m in core diameter and 4 in the periphery Booster diameter of 3.35 m, height of about 57 m, core rocket propellant -253 ℃ liquid hydrogen and -183 ℃ liquid oxygen, booster propellant for the liquid oxygen and kerosene, their tanks are used Aluminum alloy welding, but the type of aluminum alloy used in the media has not been reported, I think it should be welded with 2219 aluminum plate. The 2219 aluminum alloy made a more detailed introduction.