marsden103 继电器参考资料.pdf

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ulysses at solar maximum and beyond Ulysses at Solar Maximum and Beyond R.G. Marsden Solar System Division, Space Science Department, ESA Directorate of Scientific Programmes, ESTEC, Noordwijk, The Netherlands Introduction and travelled further from the Sun than any After a brief review of the mission and its other ESA-built space probe. Following a look achievements, this article presents some at some of the operational challenges ahead, recent highlights. These include the discovery, the remainder of the article is devoted to the not recognised at the time, that in 1996, future, which for Ulysses continues to look Ulysses set the record for finding the longest bright. The spacecraft and its payload are in comet tail ever. This record is not the only one excellent condition, and there are plans to held by ESA’s intrepid heliospheric explorer. extend orbital operations until September Ulysses attained a speed of 15.4 km/s just after 2004. By that time Ulysses will have completed burn-out of the upper-stage motors, making it its second out-of-ecliptic orbit of the Sun.

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