The invention discloses a passive heat management technology for spacecrafts such as satellites, relates to the technical field of engineering thermophysics, and solves the following problems in the existing satellite heat management technology: 1, the satellites need to be cooled under the high-temperature condition of direct solar radiation and need to keep a certain temperature to avoid damage to internal devices when no solar radiation exists; a static spectrum surface radiation heat dissipation method cannot regulate and control heat dissipation power and only consumes extra energy for heating and heat preservation at low temperature. And 2, dynamic spectrum self-adaptive heat dissipation can reduce the radiation heat dissipation power at low temperature, but the existing material has the problems that the spectrum is not perfect, large-scale preparation cannot be realized, the service life is short under the space working condition and the like. On the basis of a static spectrum surface, the radiator is modularized, and multiple stages of thermal switch devices with different triggering conditions are introduced, so that the heat dissipation thermal resistance is automatically adjusted according to the temperature, and passive spacecraft temperature management is realized. In addition, the heat dissipation coating adopts a modular design, and can adapt to space folding of spacecraft parts.

    本发明公开了一种针对卫星等航天器的无源热管理技术,涉及工程热物理技术领域,解决了现有卫星热管理技术的如下问题:1.卫星不仅需要在太阳直射的高温情况下散热,还需要在无太阳照射时保持一定温度避免内部器件损坏。静态光谱表面辐射散热方法无法调控散热功率,只能在低温时消耗额外能源加热保温。2.动态光谱自适应散热可以在低温时降低辐射散热功率,但现有材料存在:光谱不够完善、无法大规模制备、在太空工况下寿命低等问题。本发明在静态光谱表面的基础上,将散热器模块化并引入多级不同触发条件的热开关装置,从而根据温度自发调节散热热阻,实现无源的航天器温度管理。此外,散热涂层采用模块化设计,可以适配航天器部件的空间折叠。


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Satellite passive heat management structure based on multistage nonlinear heat conduction


    Weitere Titelangaben:

    一种基于多级非线性导热的卫星无源热管理结构


    Beteiligte:
    CHEN ZHEN (Autor:in) / ZHANG ZHENG (Autor:in) / ZHAO XIAODONG (Autor:in)

    Erscheinungsdatum :

    2023-09-29


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B64G Raumfahrt , COSMONAUTICS / H05K PRINTED CIRCUITS , Gedruckte Schaltungen





    Using Input Estimation to Estimate Heat Source in Nonlinear Heat Conduction Problem

    Tsung-Chien Chen / Chung-Hsin Cheng / Horng-Yuan Jang et al. | AIAA | 2007



    HEAT CONDUCTION DEVICE

    JINNOH MASANORI / OTA AUN / OSHIMA HISAYOSHI et al. | Europäisches Patentamt | 2018

    Freier Zugriff