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激光通信器作为一种先进的光通信的设备,通信容量大,传输速度快,具有广泛的应用前景。其对设备温度均匀性和稳定性要求高来保证通信质量,且转动关节在两个方位上转动来更大范围地获取信号,转动关节裸露在外空间,都给热设计带来挑战。针对激光通信器的工作特性和外部空间环境规律,采用主动和被动热控方法开展热设计,对转动关节热设计、大功率密度光学器件散热技术、散热面和高精度控温设计方面进行了介绍。并根据热设计状态,设计了单机的热平衡试验,通过高低温热平衡试验对热设计方案进行验证。试验结果表明,设计方案合理可行,为后续转动高热流密度的载荷热设计提供借鉴思路。
As a kind of advanced optical communication equipment, laser communicator has large communication capacity and fast transmission speed and has a wide range of application prospects. The high temperature uniformity and stability of the equipment to ensure communication quality, and the rotation of the joint rotation in both directions to get a wider range of signals, turning joints exposed in space, all to the thermal design challenges. According to the working characteristics of laser communicator and the rules of the external space environment, active and passive thermal control methods are used to carry out the thermal design. The thermal design of the joint, the cooling technology of the high power density optical device, the cooling surface and the design of high-precision temperature control are introduced . According to the thermal design state, a single machine heat balance test was designed. The heat design scheme was verified through the high and low temperature heat balance test. The test results show that the design scheme is reasonable and feasible, which can provide reference for the subsequent design of load heat with high heat flux density.