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2016年11月3日,我国最大推力的新一代运载火箭“长征五号”在海南文昌发射成功,火箭运载能力提升了2.5倍以上,进入国际先进行列。“长征五号”新研产品比例高达90%,攻克了大直径箭体结构、大型低温捆绑火箭等十二大类247项核心关键技术。在“长征五号”研制过程中,我国航天人发扬自力更生、自主创新、锐意进取、顽强拼搏的精神,采用全数字化三维设计方法,改善受力设计和焊接工艺,累计开展7000、1000余项地面各种试验...... 中国航天事业创建62年来,已建成了种类齐全、配套完整的航天工业体系,先后向9个国家出口11颗卫星,与37个国家、4个国际组织签署了121项双边合作协定或者协议,为巴基斯坦、伊朗、土耳其、秘鲁等国提供卫星服务,支持他们防灾减灾,为人类和平利用太空作出了积极贡献。 运用唯物辩证法关于创新的观点并结合材料,说明我国航天人是怎样以创新来推动中国运载火箭实现跨越式发展的。(10分)
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