DSO在轨检测方案的设计与结构分析

Design and Mechanics Analysis for a Space-Based Detection Scheme of DSO Primary Optical Telescope

为论证深空太阳天文台的主望远镜桁架结构在火箭发射过程中,能否经受严苛的发射环境,并能继续正常工作,以及经历严苛的发射环境后,望远镜是否需要设置在轨调整系统,使主镜与准直镜的相对位置能够精确地保持,提出了一种可行的在轨检测方案,并对主望远镜的桁架结构进行静应力分析、动载荷分析、模态分析及频响应分析,分析了其安全性,发现桁架结构需要减振机构降低跷振造成的响应,从而初步论证了在轨调整的必要性及可行性,初步验证了结构设计及工艺流程的合理性。针对主望远镜桁架的正弦振动试验及在轨检测试验部分,给出了试验的具体步骤及实施方案,为后续试验工作的开展提供了技术支持。

In order to demonstrate whether the truss system of the main optical telescope of the Deep- space Solar Observatory could live through the relentless launch condition and remain working during the launch period, and to demonstrate whether it is necessary to build a space-based adjusting system for the Deep-space Solar Observatory so that the relative position of the main mirror and the collimator could be kept accurately, this thesis put forward a feasible space-based detection scheme, and made static stress analysis, dynamic load analysis, the modal analysis and response spectrum analysis of the truss system, which were to analyze the structural safety, and discovered that the truss system needed structures of vibration attenuation to reduce the response of POGO. This demonstrated preliminarily the necessity and the feasibility of the spacebased adjusting scheme, verified preliminarily the correctness of the structure design and the technological process. This thesis also provided the test procedure of the Sinusoidal Vibration Test and the space-based detection test, which provided the necessary contrast data and basic work of the next vibration test technically.