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目标飞行器密封舱内流场设计是实现舱内温湿度控制、污染物扩散的基本途径,是保证长期在轨驻留航天员热舒适性的重要手段。文章分析确定了目标飞行器流场设计地面验证的等温化试验准则,通过保证流场温差不大于1℃,降低地面自然对流的影响,使微重力环境下工作的流场设计在地面环境得到有效验证。结果表明,航天员活动区88.3%区域风速在0.08～0.5 m/s之间,睡眠区风速均在0.08～0.2 m/s之间,均满足指标要求。目标飞行器流场最佳风速范围(0.076～0.203 m/s)所占比例为82.8%,优于国际空间站各舱段最佳风速范围所占比例。
The design of the flow field in the airtight capsule of the target aircraft is the basic way to realize the control of temperature and humidity in the cabin and the diffusion of pollutants. It is an important means to ensure the thermal comfort of astronauts who stay in orbit for a long time. The paper analyzes and determines the isothermal test criterion for the ground validation of target aircraft flow field design. By ensuring that the temperature difference of the flow field is not more than 1 ℃, the influence of the natural convection on the ground is reduced so that the flow field design under the micro-gravity environment can be effectively verified in the ground environment . The results show that the wind speed in 88.3% of the astronauts’ active area is between 0.08-0.5 m / s and the sleeping area’s wind speed is between 0.08-0.2 m / s, both of which meet the index requirements. The optimal wind speed range (0.076-0.203 m / s) of the target aircraft accounted for 82.8% of the total, which is better than the ratio of the best wind speed range of each segment of the International Space Station.