基于石墨烯强化传热的微小飞行器热控设计

文章针对微小飞行器电子设备高度集成化带来的热控风险，以某微小飞行器为研究对象，在分析其轨道参数和结构性能的基础上，提出采取不同厚度的石墨烯导热层等温强化传热的热控设计方案；通过热分析软件建立飞行器在轨状态的热模型，仿真计算飞行器在高温和低温工况下的外热流及不同厚度的石墨烯导热层方案下的瞬态温度分布，并对结果进行对比分析。结果表明，采取石墨烯导热层等温强化传热的热控方案可明显降低微小飞行器内部单机的温差，解决高低温工况下单机温度波动较大的问题。同时，通过实验方法验证了利用石墨烯导热层实现微小飞行器等温化的可行性。

Thermal control design for the small aircraft based on grapheme layer enhanced heating

In view of the thermal control risk caused by the highly integrated electronic equipment in the micro aircraft, a thermal design scheme of the isothermal enhanced heat transfer with graphene layers is proposed based on the orbital parameters and the structural properties of the small spacecraft. Firstly, a thermal model of the orbital state of the aircraft is established, and then the transient temperature distributions under high temperature and low temperature conditions are discussed. The effect of the graphene thermal conductive layers of different thicknesses on the isothermal property of the small spacecraft is analysed. The results show that the temperature range of the main parts and units can be narrowed significantly, In addition, it is shown by experiment that the graphene layers can also improve the temperature uniformity on the outer panel of the small aircraft.