复杂热环境下平流层飞艇高空驻留热动力学特性

Heat Dynamics Behavior of a Stratospheric Airship in a Complex Thermal Environment at High-Altitude Station-Keeping Conditions

热问题是平流层飞艇高空驻留期间面临的重点问题之一。分析了太阳辐射、地球反照和红外辐射等热环境因素的时变特征,提出了多节点平流层飞艇热动力学分析模型。该模型可较好地实现平流层飞艇昼夜热动力学特性仿真研究。计算结果表明,季节、纬度和大气对流等因素对平流层飞艇的热动力学特性有着重要影响。

Thermal problem is one of the key issues for a stratospheric airship keeping on station. The time-varying characteristics of solar radiation, earth albedo and infrared radiation are analyzed and a multi-node heat dynamics model for a stratospheric airship is proposed in this article. This model can be used to simulate the day-night heat dynamics behavior of the airship. The simulation results suggest that seasons, geographical latitude, and surround air speed can have significant influence on its day-night heat dynamics behaviors.