上海交通大学学报(自然版) ›› 2016, Vol. 50 ›› Issue (04): 608-612.

• 航空、航天 • 上一篇    下一篇

高空科学气球下降过程航迹与热性能耦合分析

杨希祥   

  1. (国防科学技术大学 航天科学与工程学院, 长沙 410073)
  • 收稿日期:2015-04-28 出版日期:2016-04-28 发布日期:2016-04-28
  • 基金资助:
    高分辨率对地观测系统重大专项(GFZX0X0X01)资助

Analysis of Trajectory and Thermal Performance during Descent Stage of High Altitude Scientific Balloons

YANG Xixiang   

  1. (College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China)
  • Received:2015-04-28 Online:2016-04-28 Published:2016-04-28

摘要: 摘要: 考虑高空科学气球动力学与热力学耦合关系,研究分析下降过程飞行航迹与内部氦气热性能.建立高空科学气球热模型和下降过程动力学模型,包括太阳辐射模型、红外辐射模型、对流换热模型等,仿真得到了某高空气球下降过程高度、速度等飞行航迹参数和氦气体积、温度等热性能参数,分析了参数变化规律与变化原因.研究结果表明,高空气球下降过程存在严重超热现象,超热状态变化导致下降速度变化,下降速度变化又导致超热状态改变;下降初始阶段氦气排放质量对下降速度、下降时间和超热状态均存在重要影响.

关键词: 高空科学气球, 下降过程, 航迹, 热性能

Abstract: Abstract: Considering the coupled relation between dynamics and thermodynamics, the trajectory and thermal performance of helium gas during the descent stage of high altitude scientific balloons were studied. The thermal model and vertical dynamic model of high altitude balloons were established, including the solar radiation model, the infrared radiation model, and the heat convection model. The trajectory and thermal performance of a balloon during the descent stage were simulated, including height, velocity, and volume and temperature of helium gas, while the variation regularity of parameters were analyzed. The research results show that the superheated phenomenon exits during the descent stage of balloons, state changing of superheated results in the changing of descent velocity, and changing of descent velocity results in the state changing of superheated. The discharge mass of helium gas in the initial stage has an important influence on descent velocity, descent time and superheated state. This paper can provide theoretical reference for design, flight test and application of high altitude balloons.

Key words: Key words: high altitude scientific balloon, descent stage, trajectory, thermal performance

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