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首页> 外文会议>Proceedings of ESMATS 2011: 14th European space mechanisms and tribology symposium.;Proceedings of ESMATS 2011: 14th European space mechanisms and tribology symposium. >CRYOGENIC MOTORS FOR HERSCHEL/PACS AND JAMES WEBB/MIRI AND NIRSPEC
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CRYOGENIC MOTORS FOR HERSCHEL/PACS AND JAMES WEBB/MIRI AND NIRSPEC

机译：HERSCHEL / PACS和James WEBB / MIRI和NIRSPEC的低温马达

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摘要

The space telescopes Herschel and James Webb, thernsuccessor of the Hubble Telescope, are designed tornoperate primarily in the infrared range of thernelectromagnetic spectrum. Therefore therninstrumentation has to be cooled to cryogenicrntemperatures. The instrument PACS (PhotodetectorrnArray Camera & Spectrometer) is located on Herschel,rnwhich was launched in May 2009. It is operating atrnsuperfluid helium temperatures below 2 Kelvin. Therninstruments MIRI (Mid-Infrared Instrument) andrnNIRSpec (Near Infrared Spectrograph) on James Webb,rnwith launch planned for 2014 will operate belowrn15 Kelvin (MIRI) and at 38 Kelvin (NIRSpec).rnTo actuate the different filter and grating wheelsrnintegrated in these experiments two types of cryogenicrnmotors are used. These electronically commutatedrntorque motors were especially developed for the use inrnlow temperature and vacuum environment and yieldrnlarge torques, large range of speeds, and are furtherrncharacterized by low outgassing, high efficiency, smallrnthermal losses and high positioning accuracy. Theyrnwere designed, produced and tested according to ESArnSpace Standards at the Low Temperature Laboratoryrn(TTL) at the Free University of Berlin.
机译：哈勃望远镜的继任者太空望远镜Herschel和James Webb被设计成主要在电磁光谱的红外范围内超视。因此，必须将仪器冷却至低温。 PACS仪器（光电探测器阵列照相机和光谱仪）位于Herschel，rn，该实验室于2009年5月推出。它在超流体氦气温度低于2开尔文的条件下运行。詹姆斯·韦伯（James Webb）的MIRI（中红外仪器）和NIRSpec（近红外光谱仪）仪器，计划于2014年发射，将在15开尔文（MIRI）和38开尔文（NIRSpec）以下运行。为了启动在这些实验中集成的不同滤光片和光栅轮，两个使用了低温马达类型。这些电子换向转矩电动机是专门为在低温和真空环境下使用而开发的，其产生的转矩大，速度范围大，并且具有排气量低，效率高，热损失小和定位精度高的特点。它们是根据柏林自由大学低温实验室（TTL）的ESArnSpace标准进行设计，生产和测试的。

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