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长征五号发射失利 但中国火箭成功率仍居世界领先

2017-07-03 09:18:21   铁血网

从全球航天发射领域来看,中国长征火箭一直保持较高的成功率和可靠性。长征火箭首次对外公布的发射失败记录是1996年8月18日,这是该火箭执行的第42次发射任务。

2016年9月1日,太原卫星发射中心由长征四号乙运载火箭发射高分十号卫星失利。不愧是G2,中国和美国在各个领域都要发生碰撞和争夺,不仅是奥运会金牌,发射卫星也是。仿佛就像是事先约好了的,美国也马上要求失败一次。这一天美国SpaceX猎鹰9号火箭在发射前发生爆炸。

截止2016年9月,中国长征系列运载火箭共有235次发射,平均每年十余次,其中完全失败3次,部分成功1次,成功率高达98%。

随后的近一年时间,中国的火箭发射似乎不太顺利,2016年11月3日,长征五号运载火箭首次发射,实践十七号卫星进入预定轨道,又实施了二次倾角控制和五次定点捕获,最终才定点成功。2016年12月28日,长征二号丁火箭发射高景一号卫星,卫星没能进入预定轨道,经数次变轨后进入轨道。2017年6月19日,长征三号乙运载火箭发射中星9A卫星任务失利。

航天发射是高风险的活动,存在很大不确定性。1962年3月21日,中国自主研制的第一枚东风二号弹道导弹首次飞行试验,21秒时导弹完全失控,69秒后导弹坠毁。聂荣臻总结说:“既然是科学试验,总会有成功,有失败。成功了,我们就取得经验;失败了,我们就得到教训!成功了,功劳是你们的,失败了,责任由我来负!”对面发射失败,钱学森也说:“科学试验如果次次都能成功,那又何必试验呢。经过挫折和失败,会使我们变得更聪明。”有了失败,应该振作精神,分析原因,采取切实可行的措施,继续再战。

航天事业就是在一次次的失败中成长起来的,前途是光明的,道路是曲折的。中国航天加油!

责任编辑:孙启浩 CN037
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