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立方卫星类型纳米卫星热子系统的设计和制造
Braulio Peraza-Acosta1, Jesús Irán Grageda-Arellano1, Carlos Couder-Castañeda2
1Instituto Politécnico Nacional, Centro de Desarrollo Aeroespacial, 06610, Mexico City, Mexico.
Scientific reports
|January 29, 2025
概括
本研究验证了纳米卫星的热控制系统,使用被动多层涂层和内部温度传感器. 实时数据传输和分析证实了系统的安全性.
科学领域:
- 太空飞船工程 太空飞船工程
- 热管理 热管理
- 纳米卫星技术 纳米卫星技术
背景情况:
- 立方卫星任务需要强大的热控制,以确保组件在极端空间环境中存活.
- 被动热控制系统为小型卫星提供可靠性和降低功耗.
研究的目的:
- 为1U立方卫星设计和验证一个热子系统.
- 在模拟空间环境中评估被动热控制策略的有效性.
主要方法:
- 实施多层涂层用于被动热调节.
- 在所有六个卫星面上集成电子板与内部表面温度传感器.
- 通过模拟轨道条件的理论热真空室测试进行验证.
- 实时无线数据传输到地球站进行处理和分析.
主要成果:
- 通过模拟空间环境测试成功证明了被动热控制的有效性.
- 在所有卫星面上进行准确的内部表面温度测量.
- 实时数据采集和热性能图形显示.
结论:
- 设计的热子系统通过被动控制有效调节CubeSat的温度.
- 验证过程证实了系统能够承受模拟轨道热条件的能力.
- 集成的传感器和数据传输系统提供了有价值的实时热性能见解.
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01:27Thermal expansion and Thermal stress: Problem Solving
San Francisco's Golden Gate Bridge is exposed to temperatures ranging from -15 °C to 40 °C. At its coldest, the main span of the bridge is 1275 m long. Assuming that the bridge is made entirely of steel, what is the change in its length between these temperatures?
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in temperature (ΔT) is 55 °C.
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in temperature (ΔT) is 55 °C.