气候环境实验室降/扬雪环境表征方法分析

Characterization Method of Snowfall Environment in Climatic Environmental Laboratory

针对国内目前尚未开展过民机整机级实验室降/扬雪试验、对适航关注的降/扬雪环境参数不明确等问题,分析了气候环境实验室降/扬雪环境表征方法。首先从与降/扬雪相关的气象标准、环境试验标准、适航符合性验证方法和国外民机相关试验资料这四个方面着手收集了与降/扬雪环境相关的文献,分析提炼出了10个可对降/扬雪环境进行表征的方法。然后以民机降/扬雪环境下的适航符合性验证要求为基础,结合上述提炼出的10个表征方法,分析确定采用温度、能见度、总含水量、风速和雪密度对气候环境实验室降/扬雪环境进行表征,研究得到的降/扬雪环境表征方法可为将来在气候环境实验室内开展民机降/扬雪试验提供参考。

Currently, no snowfall test about a real civil aircraft in climatic environment laboratory has been conducted yet, and no completely-clear parameter which is critical to airworthiness of snowfall has been found. This paper analyzed the characterization methods of snowfall in climatic environmental laboratory. First of all, the literature related to the snowfall was collected from four aspects-meteorological standards, environmental test standards, airworthiness compliance verification methods and foreign civil aircraft test data. Ten characterization methods of snowfall environment were analyzed and extracted. Secondly, with airworthiness compliance verification requirements in the snowfall environment of civil aircraft, temperature, visibility, the total water content, wind speed and the density of snow were used to characterize the snowfall environment in climatic environmental laboratory. The characterization methods obtained in the research can provide references for carrying out snowfall test in climatic environmental laboratory in the future.