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原标题：长七A火箭测发周期再缩6天 为高密度发射提前准备9月13日，长征七号A遥五运载火箭在文昌航天发射场成功发射中星1E卫星。　肖国军、姜文博　摄中新网北京9月13日电 (王冰)由中国航天科技集团一院抓总研制的长征七号A遥五运载火箭(简称“长七A火箭”或“长七改火箭”)13日晚在文昌航天发射场成功发射中星1E卫星。此次发射，长七A火箭的测发周期由32天缩减到26天，火箭发射效率进一步提高，为应对高密度常态化发射奠定基础。“随到随吊” 总装时间减3天吊装芯一级、捆绑助推器、装上芯二级……火箭进场后，试验队队员首先需要将水平躺着的火箭竖立起来，进行总装。         Photo: VCGA 120‑kilogram man lost 20 kilograms on an AI‑devised diet plan, yet the same algorithm, unable to gauge his physiological limits, contributed to multiple organ failures that sent him to the ICU and brought him to the brink of death, domestic media outlet Sichuan Daily reported.
Chen is a 34-year-old content creator whose job requires him to routinely stay up late and maintain a high-fat, high-salt diet. This unhealthy lifestyle pushed his weight up to 120 kilograms, which prompted him to lose weight.
After conducting online research, Chen turned to an AI tool to devise a "scientific" weight-loss plan. The algorithm recommended that he climb stairs for 90 minutes every day and play badminton twice a week, with each session lasting for two to three hours. It even instructed him to keep exercising without pause, even if his clothes were completely soaked in sweat, Sichuan Daily reported.
On the dietary front, the AI‑generated plan prescribed two eggs, half a steamed bun, and a glass of milk for breakfast; 75 grams of beef and 75 grams of vegetables for lunch; and a single serving of yogurt for dinner.
Forty‑five days into the plan, Chen had shed 20 kilograms. Yet after catching a cold, he continued his workouts, a decision that soon landed him in the emergency room. By the time he arrived at the hospital, he had become incoherent and subsequently slipped into a coma, according to the report.
Test results confirmed that Chen was in septic shock, a severe systemic inflammatory response triggered by infection, which subsequently led to multiple organ dysfunction syndrome, Sichuan Daily reported. "Had he been brought in a few hours later, he might have been beyond rescue," the physician said.
Medical intervention pulled him back from the brink. Still, he was baffled as to how a supposedly scientific approach could have nearly cost him his life.
Cao Lianghai, deputy director of the intensive care unit at the treating hospital, said Chen's chronic sleep deprivation had already weakened his immune system's self‑regulating capacity, adding that extreme calorie restriction further suppressed immune function, while excessive high-intensity exercise triggered persistent inflammatory responses, pushing his immune system toward collapse.
The combination of strenuous exercise and fasting led to severe dehydration, which in turn triggered an acute kidney stone attack, said Cao. This caused a blockage and a urinary tract infection, ultimately culminating in a systemic inflammatory response, he added.
"AI can calculate calorie deficits, yet it cannot gauge the true physiological limits of the human body," the doctor warned.
Global Times
。在垂直总装及单元测试阶段，试验队通过改进总装模式，将总装时间缩短了3天。

B | 一院长七A火箭主任设计师魏远明介绍，作为全低温火箭，长七A火箭是目前中国模块数量最多的新一代火箭，由4个助推器、芯一级、芯二级和芯三级构成，部段较多且复杂。9月13日，长征七号A遥五运载火箭在文昌航天发射场成功发射中星1E卫星。

C | 　肖国军、姜文博 摄 以前，队员们需等所有部段都准备齐备，再一鼓作气完成垂直总装。但火箭芯三级吊装要先完成火工品安装、氦检漏、喷管延伸段安装等多项工作，比助推器和一二级准备时间长。为此，这次任务中，团队将总装模式由“一气呵成”改为“随到随吊”，优化总装时间。“现在，我们先吊装好助推器和一二级，在等待芯三级的过程中，插空进行助推器和芯二级的伺服机构安装工作，等三级具备条件，再进行吊装。再加上仪器设备上箭安装等分系统测试前准备工作优化了1天，算下来，本阶段比以往的模式可以节省3天时间。”魏远明说。合并“同类项” 抢出2天测试时间总装及单元测试后，火箭需要进行分系统匹配测试和总检查测试，验证其技术性能和可靠性，使其达到符合发射状态的要求。在这次任务中，团队将具备类似状态的测试进行了一次合并“同类项”，进一步缩短检测时间。增补压测试是分系统动力系统测试的最后一项测试，紧接着就是进行第一次总检查测试。总检查测试和增补压测试都会运行模飞程序。研究团队提出，“如果两者合并，是否可以减少总检查测试的一部分工作？合并后能否达到相同测试效果？”经过研究分析，团队找出两个测试存在的差别，在增补压测试中加强了对测量系统的验证，让测试更全面，实现用更少的时间达到相同测试效果。

D | 9月13日，长征七号A遥五运载火箭在文昌航天发射场成功发射中星1E卫星。　肖国军、姜文博 摄 此外，团队将火箭控制系统和测量系统检测前的准备工作提前并行开展完成，缩减了分系统匹配测试周期。“通过这些措施，我们在分系统匹配测试和总检查测试阶段共节省了2天时间。

E | ”魏远明说。串行变并行 转场及发射区工作省下1天时间转场当天，长七A火箭“站”在活动发射平台上，缓缓“走”向发射塔架。这意味着火箭在技术准备区经检查测试达到了可以进行发射的状态。在以往发射中，长七A火箭从转场加上在发射区的工作，一共需要4天时间。

F | 这次团队梳理流程，将测量系统的恢复和测试工作由串行改为并行，使转场与发射区工作缩减为3天，这是目前发射区占位时间最短的液体火箭。9月13日，长征七号A遥五运载火箭在文昌航天发射场成功发射中星1E卫星。　肖国军、姜文博 摄 “串行变并行，并不是什么新鲜的措施，其难点在于如何确定这些流程可以实现并行，且在工作过程中不受干扰。”魏远明说，“这对我们的风险识别、计划调度和现场操作都提出了更高的要求。”此外，魏远明说：“作为一型新火箭，前几次任务，工作安排余量相对大一些，经历前几发任务的考验，我们对各项工作了解更加深入，操作更加熟练，因此对流程优化的协调性和适应性也有了更强的信心和把握。”35天、32天、26天，测发周期的一次次缩短，长七A火箭不断优化。此次任务是长七A火箭第四次执行发射任务，火箭状态正在逐步固化，为进入高密度发射阶段提前准备。(完)返回搜狐，查看更多责任编辑：