飞艇热控制是平流层飞艇应用中涉及的关键技术之一,而外部对流换热是平流层飞艇热控制的重要影响因素.为了准确预测飞艇换热,基于数值模拟,建立基于飞艇长径比的对流换热准则关系式,并与实验结果比较,发现其预测误差为±7%.与0°攻角换热相比,15°攻角时迎风面换热比背风面增大了10%左右,而总体换热增大7%. Airship thermal control is one of the key technologies involved in the application of stratospheric airships, and the external convection heat transfer is an important factor affecting the thermal control of the airship.In order to accurately predict the heat transfer of the airship, based on the numerical simulation, Convection heat transfer criterion, and compared with the experimental results and found that the prediction error of ± 7%. Compared with 0 ° angle of attack heat, 15 ° angle of attack when the windward heat transfer leeward than increased by about 10% , While the overall heat transfer increased by 7%.