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Space weather concerns for all‐electric propulsion satellites

机译:全电动推进卫星的空间天气问题

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摘要

The introduction of all-electric propulsion satellites is a game-changer in the quest for low-cost access to space. It also raises new questions for satellite manufacturers, operators and the insurance industry regarding the general risks and specifically the threat of adverse space weather. The issues surrounding this new concept were discussed by research scientists and up to 30 representatives from the space industry at a special meeting at the European Space Weather Week held in November 2014. Here we report on the discussions at that meeting. We show that for a satellite undergoing electric orbit raising for 200 days the radiation dose due to electrons is equivalent to approximately 6.7 years operation at geostationary orbit, or approximately half the typical design life. We also show that electrons can be injected into the slot region (8,000 km) where they pose a risk of satellite internal charging. The results highlight the importance of additional radiation protection. We also discuss the benefits, the operational considerations, the other risks from the Van Allen radiation belts, the new business opportunities for space insurance, and the need for space situation awareness in medium Earth orbit where electric orbit raising takes place
机译:全电动推进卫星的引入改变了寻求低成本进入太空的规则。这也给卫星制造商,运营商和保险业带来了有关总体风险,特别是不利的太空天气威胁的新问题。在2014年11月举行的欧洲太空气象周的一次特别会议上,研究科学家和多达30位航天工业代表讨论了围绕这一新概念的问题。在此,我们报告该会议的讨论情况。我们表明,对于一颗经历200天电轨道上升的卫星,由于电子引起的辐射剂量大约相当于地球静止轨道运行6.7年,或者是典型设计寿命的一半。我们还表明,电子可以注入缝隙区域(8,000公里),在这些区域中可能会造成卫星内部充电的风险。结果突出了附加辐射防护的重要性。我们还讨论了好处,运营考虑,范艾伦辐射带带来的其他风险,空间保险的新商机,以及在进行电轨道提升的中地球轨道上对空间状况的认识的需求

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