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多功能CubeSat望远镜:在小型航天器上进行大型观测

The Versatile CubeSat Telescope: Going to Large Apertures in Small Spacecraft

Jaren N. Ashcraft, Ewan S. Douglas, Daewook Kim, George A. Smith, Kerri Cahoy, Tom Connors, Kevin Z. Derby, Victor Gasho, Kerry Gonzales, Charlotte E. Guthery, … 展开作者

Jaren N. Ashcraft, Ewan S. Douglas, Daewook Kim, George A. Smith, Kerri Cahoy, Tom Connors, Kevin Z. Derby, Victor Gasho, Kerry Gonzales, Charlotte E. Guthery, Geon Hee Kim, Corwyn Sauve, Paul Serra

摘要:

用于学术研究目的的立方体卫星望远镜的设计必须在复杂的光学和结构设计与成本之间取得平衡,以便在极端环境中最大限度地发挥性能。增加CubeSat大小(例如,6U至12 U)将提高潜在的光学性能,但实物成本会增加。金刚石车削方面的最新发展增加了非球面铝镜的可及性,从而使具有成本效益的纳米卫星望远镜得到了良好的校正。我们提出了一个全铝多功能立方体卫星望远镜(VCT)平台,优化性能,成本和时间表在一个相对较大的95毫米孔径和0.4度衍射限制的全视场稳定的MEMS精细转向模块。这项研究的特点是一个新的设计工具,允许容易表征性能退化的航天器热和结构干扰的功能。我们将提出的细节,包括贸易之间的轴上和离轴实现的VCT,热稳定性要求和有限元分析,并发射生存的考虑。VCT适用于一系列CubeSat应用,为天文学,地球成像和光学通信提供了一个负担得起的平台。

英文摘要:

The design of a CubeSat telescope for academic research purposes must balance complicated optical and structural designs with cost to maximize performance in extreme environments. Increasing the CubeSat size (eg. 6U to 12U) will increase the potential optical performance, but the cost will increase in kind. Recent developments in diamond-turning have increased the accessibility of aspheric aluminum mirrors, enabling a cost-effective regime of well-corrected nanosatellite telescopes. We present an all-aluminum versatile CubeSat telescope (VCT) platform that optimizes performance, cost, and schedule at a relatively large 95 mm aperture and 0.4 degree diffraction limited full field of view stablized by MEMS fine-steering modules. This study features a new design tool that permits easy characterization of performance degradation as a function of spacecraft thermal and structural disturbances. We will present details including the trade between on- and off-axis implementations of the VCT, thermal stability requirements and finite-element analysis, and launch survival considerations. The VCT is suitable for a range of CubeSat borne applications, which provides an affordable platform for astronomy, Earth-imaging, and optical communications.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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