Solidot: NASA NEXT离子推进器连续运行五年半

Solidot

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NASA NEXT离子推进器连续运行五年半
http://solidot.org.feedsportal.com/c/33236/f/556826/s/2de8eddf/l/0L0Ssolidot0Borg0Cstory0Dsid0F35361/story01.htm
Jun 28th 2013, 07:31

NASA本周宣布，它的NEXT（NASA Evolutionary Xenon Thruster）先进离子推进器引擎已持续工作48000个小时，相当于五年半，创下了空间推进系统最长的连续测试时间记录。NEXT是一种太阳能电力推进系统，利用飞船上的太阳能电池板产生的电力去驱动7kW级的离子推进器，在此过程中，氙气中的电子电离后加速到145000 km/h喷出，利用反作用力推动飞船，它具有极高的比冲。在48000个小时测试中，离子推进器共消耗了870 kg的氙气推进剂，产生的总冲量与10000 kg传统火箭推进剂相当。NASA希望NEXT或类似的离子推进器能应用于深空任务。This entry passed through the Full-Text RSS service — if this is your content and you're reading it on someone else's site, please read the FAQ at fivefilters.org/content-only/faq.php#publishers. Five Filters recommends: 'You Say What You Like, Because They Like What You Say' - http://www.medialens.org/index.php/alerts/alert-archive/alerts-2013/731-you-say-what-you-like-because-they-like-what-you-say.html



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