内容来源：https://www.geekwire.com/2026/helium-problem-nasa-delay-artemis-2-launch-rollback/

内容总结：

美国国家航空航天局（NASA）局长比尔·纳尔逊近日表示，由于技术故障，执行“阿尔忒弥斯2号”载人绕月飞行任务的巨型火箭需从发射台撤回检修。此次任务原定最早于今年3月执行，现已推迟至4月以后。

故障发生在肯尼迪航天中心完成发射台演练数日后。监测数据显示，太空发射系统火箭上面级的氦气输送流程出现中断，该气体用于推进剂储罐增压及发动机吹除作业。纳尔逊在社交媒体上说明：“团队在系统常规增压操作期间未能实现氦气在箭体内流动。”

氦气增压系统在本周的燃料加注演练中运行正常。值得注意的是，2022年“阿尔忒弥斯1号”无人绕月任务准备期间也曾出现氦气阀门故障。本次故障可能源于氦气供应系统多个环节中的任一失效点。纳尔逊强调，所有检修工作必须在52层楼高的火箭装配大楼内进行。

目前任务发射窗口调整为4月1日及4月3日至6日。此次任务计划搭载三名NASA宇航员和一名加拿大宇航员沿“8字形”轨道绕月飞行，这将是自1972年阿波罗17号任务以来人类首次超越近地轨道。若任务成功，将为后续“阿尔忒弥斯3号”载人登月计划铺平道路。

多家航天企业正深度参与该计划：L3哈里斯公司雷德蒙德工厂为“猎户座”飞船制造推进器，波音公司担任火箭核心级主承包商，杰夫·贝索斯创立的蓝色起源公司正在研发计划于2030年投入使用的“蓝月”着陆器，其“新格伦”火箭预计在未来数月执行无人货运着陆器试射任务。

中文翻译：

美国国家航空航天局局长贾里德·艾萨克曼表示，为执行具有历史意义的"阿尔忒弥斯2号"载人绕月任务而建造的巨型火箭，因需排查技术故障，必须从发射台撤回组装大楼。

这项为期10天的任务原定最早于今年3月执行，现已推迟至4月。艾萨克曼在社交媒体X上发文称："我理解大家对此感到失望，而最感失望的莫过于NASA团队，他们一直为这项伟大事业不懈努力。"

技术问题出现在肯尼迪航天中心成功完成发射台演练数日后。太空发射系统火箭上面级的数据显示，用于推进剂储箱增压和发动机净化的氦气供应流出现中断。艾萨克曼今日写道："昨晚团队未能使氦气在箭体内正常流通，该问题发生在系统再增压的常规操作过程中。"

艾萨克曼指出，氦气增压系统在本周的燃料加注演练中运行正常。值得注意的是，2022年执行无人绕月任务"阿尔忒弥斯1号"前也曾出现氦气阀门故障，促使NASA管理层采取纠正措施。

当前故障可能源于氦气供应系统中多个环节的任一失效点。艾萨克曼表示："无论潜在故障点何在，所有检修工作都必须在飞行器装配大楼内进行。"这座52层高的建筑正是太空发射系统火箭与"猎户座"载人飞船进行总装测试的场所。

随着3月发射窗口关闭，"阿尔忒弥斯2号"后续可用发射日期为4月1日及4月3日至6日。该任务计划搭载三名NASA宇航员和一名加拿大宇航员沿八字形轨道绕月飞行，这将是自1972年阿波罗17号任务以来人类首次超越近地轨道。若任务成功，将为"阿尔忒弥斯3号"载人登月计划铺平道路。

多家总部位于西雅图地区的企业正将发展希望寄托于"阿尔忒弥斯"计划。例如L3哈里斯公司（前身为航空喷气火箭动力公司）在雷德蒙德设立的工厂为"猎户座"飞船制造推进器，目前已着手开展"阿尔忒弥斯8号"任务的前期工作；波音公司是太空发射系统火箭核心级的主承包商；杰夫·贝索斯创立的蓝色起源航天公司（总部位于肯特）正在研发"蓝月"着陆器，计划自2030年起运送"阿尔忒弥斯"宇航员登陆月球。该公司的新格伦火箭预计将在未来数月内执行无人货运版着陆器的首次月球运送任务。

英文来源：

NASA Administrator Jared Isaacman says the giant rocket set to send four astronauts around the moon for the history-making Artemis 2 mission must be rolled back from its launch pad to troubleshoot a technical problem.
The 10-day mission, previously scheduled for as soon as March, is now postponed until April at the earliest. “I understand people are disappointed by this development,” Isaacman said in a posting to X. “That disappointment is felt most by the team at NASA, who have been working tirelessly to prepare for this great endeavor.”
The technical issue cropped up just days after a successful launch-pad rehearsal at NASA’s Kennedy Space Center. Data from the Space Launch System rocket’s upper stage registered an interruption in the flow of helium, which is used to pressurize the propellant tanks and purge the engines. “Last evening, the team was unable to get helium flow through the vehicle,” Isaacman wrote today. “This occurred during a routine operation to repressurize the system.”
Isaacman said the helium pressurization system worked correctly during this week’s wet dress rehearsal. For what it’s worth, a problem with a helium valve cropped up during preparations for the uncrewed Artemis 1 round-the-moon mission in 2022, leading NASA managers to take corrective actions.
The current problem could be due to a failure at any of several points in the helium supply system. “Regardless of the potential fault, accessing and remediating any of these issues can only be performed in the VAB,” said Isaacman, referring to the 52-story Vehicle Assembly Building where the SLS and its Orion crew capsule were stacked for launch.
With March out of consideration, the next available launch dates for Artemis 2 are April 1 and April 3-6. The mission aims to send three NASA astronauts and a Canadian astronaut on a figure-8 route around the moon — which would mark the first time humans have traveled beyond Earth orbit since Apollo 17 in 1972. A successful Artemis 2 mission would clear the way for Artemis 3’s crewed lunar landing.
Several companies with a presence in the Seattle area are banking on Artemis’ success.
For example, a facility in Redmond operated by L3Harris (previously known as Aerojet Rocketdyne) builds thrusters for the Orion spacecraft and is already working ahead on the Artemis 8 mission. Boeing is the lead contractor for the SLS rocket’s core stage. And Jeff Bezos’ Blue Origin space venture, based in Kent, is developing a Blue Moon lander that’s meant to put Artemis crews on the lunar surface starting in 2030. Blue Origin’s New Glenn rocket is expected to send an uncrewed cargo version of its lander to the moon sometime in the next few months.