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1 August 2017 Realization and testing of a deployable space telescope based on tape springs
Wang Lei, Chuang Li, Peifeng Zhong, Yaqin Chong, Nan Jing
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Proceedings Volume 10339, Pacific Rim Laser Damage 2017: Optical Materials for High-Power Lasers; 1033920 (2017) https://doi.org/10.1117/12.2269968
Event: Pacific Rim Laser Damage 2017: Optical Materials for High Power Lasers, 2017, Shanghai, China
Abstract
For its compact size and light weight, space telescope with deployable support structure for its secondary mirror is very suitable as an optical payload for a nanosatellite or a cubesat. Firstly the realization of a prototype deployable space telescope based on tape springs is introduced in this paper. The deployable telescope is composed of primary mirror assembly, secondary mirror assembly, 6 foldable tape springs to support the secondary mirror assembly, deployable baffle, aft optic components, and a set of lock-released devices based on shape memory alloy, etc. Then the deployment errors of the secondary mirror are measured with three-coordinate measuring machine to examine the alignment accuracy between the primary mirror and the deployed secondary mirror. Finally modal identification is completed for the telescope in deployment state to investigate its dynamic behavior with impact hammer testing. The results of the experimental modal identification agree with those from finite element analysis well.
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Wang Lei, Chuang Li, Peifeng Zhong, Yaqin Chong, and Nan Jing "Realization and testing of a deployable space telescope based on tape springs", Proc. SPIE 10339, Pacific Rim Laser Damage 2017: Optical Materials for High-Power Lasers, 1033920 (1 August 2017); https://doi.org/10.1117/12.2269968
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KEYWORDS
Mirrors
Space telescopes
Telescopes
Optical testing
Finite element methods
Prototyping
Shape memory alloys
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