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运载火箭,有人把它比作从地球通向太空的“天梯”。其任务是把有效载荷送入太空。根据任务和需要,有的从地面发射,有的用飞机从空中发射,有的从移动的海上平台发射,还有的从水下发射。有的要把有效载荷送入低地球轨道,有的要把有效载荷送入高地球轨道,有的要把航天器送入月球、金星和火星。其运载能力仅以低轨道而论,有的达8.6吨,有的达10吨,
Launch vehicle, some people compared it to the “ladder” leading to space from Earth. Its mission is to send payloads to space. Depending on the mission and needs, some are launched from the ground, some are launched from the air by plane, others are launched from a moving platform on the sea, and others are launched from underwater. Some will put the payload into low Earth orbit, and some will put the payload into high Earth orbit, and some will have spacecraft into the moon, Venus and Mars. Its carrying capacity only in terms of low orbit, some up to 8.6 tons, and some up to 10 tons,