摘要
气球放飞前的蒙皮温度和充气质量计算是保障气球安全的重要手段。以高空气球为研究对象,建立了高空气球的动力学模型和热平衡模型,对气球放飞后的运动特性和热特性模型进行了仿真研究。采用用四阶龙格-库塔格式计算了不同大气模型下气球上升过程的高度和氦气温度的变化曲线,分析了大气模型对高空气球载荷、氦气充气质量、驻空高度氦气温度昼夜变化、蒙皮温度分布以及蒙皮极值温差的影响,为完善高空气球运动特性和热特性分析提供了依据。
Predicting the film temperature and helium mass of balloon is an important part before the balloon launches.Aiming at high altitude balloon,the coupled dynamic and thermal models of high altitude balloons were established,based on which,the ascent and thermal characteristics of balloon were simulated numerically.Using the forth -order Runge-Kutta scheme,the altitude and helium temperature of the balloon were predicted with different atmospheric models.The relationship of atmospheric models and the mass of helium,payload,the temperature of helium,film temperature distribution and film extreme temperature difference were analyzed.The simulation results are useful for improving the dynamic and thermal research of high altitude balloons.
出处
《计算机仿真》
CSCD
北大核心
2013年第9期79-82,139,共5页
Computer Simulation
基金
南京航空航天大学博士创新创优基金(BCXJ10-02)
中央高校基本科研业务费专项资金资助
江苏高校优势学科建设项目
关键词
高空气球
运动模型
热平衡模型
大气模型
High altitude balloons
Dynamic model
Thermal model
Atmospheric model
