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Spirited Revival

机译：复兴精神

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Engineers working on the Mars Exploration Rover Spirit are planning to restart normal science operations this week as they close in on problems that have crippled the spacecraft since Jan. 21. The leading suspect is the file management system for one of the main types of memory. It probably can be fixed in the near term by limiting the number of files stored, which may have little or no operational impact. It may also be possible to later upload a permanent fix. Controllers were planning late last week to delete unnecessary files on Spirit- for example, hundreds of files that had built up during the seven-month cruise that are no longer needed. They took similar steps on Jan. 28 for Spirit's twin, Opportunity, deleting about 700 files connected with flight software that had been replaced in early December. The problems that started on the 18th Martian day of the mission (Sol 18) at 9:17 a.m. Mars Local Time had officials nervous (AW&ST Jan. 26, p. 27). They were essentially completely out of control for a day, and were only slowly able to regain command. The rover normally shuts down at night to conserve battery power, but stayed up two nights in a row while the computer constantly reset itself every 15-60 min., draining its batteries to zero. Fortunately it was able to wake up on solar power alone after sunrise, and the lithium-ion batteries were not damaged. It conducted at least 77 computer resets in a two-day period.
机译：自1月21日以来，从事火星探索漫游者精神计划的工程师计划在本周重新开始正常的科学操作，因为他们解决了困扰该航天器的问题。主要的怀疑对象是主要存储器类型之一的文件管理系统。通过限制存储的文件数量，可以在短期内解决此问题，这可能对操作几乎没有影响。以后也可以上传永久性修复程序。管制员计划在上周晚些时候删除Spirit上不必要的文件，例如，在七个月的巡游期间建立的数百个不再需要的文件。他们在1月28日为Spirit的双胞胎Opportunity采取了类似的措施，删除了与飞行软件相关的大约700个文件，这些文件已在12月初被替换。在火星当地时间上午9:17于火星任务第18天（Sol 18）开始出现的问题使官员们感到紧张（AW＆ST 1月26日，第27页）。他们基本上完全失控了一天，只能缓慢地重新获得命令。流动站通常在晚上关闭以节省电池电量，但连续两个晚上都保持运转，而计算机每隔15-60分钟会不断进行自我重置，从而将电池电量消耗为零。幸运的是，它能够在日出后仅靠太阳能唤醒，并且锂离子电池没有损坏。它在两天内至少进行了77次计算机重置。

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