新一代运载火箭长征七号首个助推低温氧箱爆破试验获得圆满成功。这是长征七号运载火箭初样研制阶段最重要的试验之一。试验成功不仅验证了设计工作的正确性及制造工艺的合理性,也标志着长征七号运载火箭转阶段研制工作全面展开。长征七号运载火箭助推氧箱在现役火箭型号中长度最长,在 A new generation of launch vehicles Long March 7, the first boost cryogenic box blasting test was a success. This is one of the most important tests of the prototype development stage of the Long March VII launch vehicle. The success of the trial not only verified the correctness of the design work and the rationality of the manufacturing process, but also marked the full development of the phase of the development of the Long March VII launch vehicle. The Long March VII launch rocket booster oxygen tank is the longest in active rocket model at