Aircraft passengers are more and demanding in terms of thermal comfort. But it is not yet easy for aircraft crew to control the environment control system （ECS） that satisfies the thermal comfort for most passengers...Aircraft passengers are more and demanding in terms of thermal comfort. But it is not yet easy for aircraft crew to control the environment control system （ECS） that satisfies the thermal comfort for most passengers due to a number of causes. This paper adopts a corrected predicted mean vote （PMV） model and an adaptive model to assess the thermal comfort conditions for 31 investigated flights and draws the conclusion that there does exist an uncomfortable thermal phe- nomenon in civil aircraft cabins, especially in some short-haul continental flights. It is necessary to develop an easy way to predict the thermal sensation of passengers and to direct the crew to con- trol ECS. Due to the assessment consistency of the corrected PMV model and the adaptive model, the adaptive model of thermal neutrality temperature can be used as a method to predict the cabin optimal operative temperature. Because only the mean outdoor effective temperature ET＊ of a departure city is an input variable for the adaptive model, this method can be easily understood and implemented by the crew and can satisfy 80-90% of the thermal acceptability levels of passen- gers.展开更多
为解决民机应急疏散试验过程中,不同类型人员难于组织、成本高昂、可重复性低的问题,采用计算机仿真技术模拟国产支线客机人员疏散试验。首先,根据《中国居民营养与慢性病状况报告(2020年)》中对我国居民的体型变化描述,收集整理所需的...为解决民机应急疏散试验过程中,不同类型人员难于组织、成本高昂、可重复性低的问题,采用计算机仿真技术模拟国产支线客机人员疏散试验。首先,根据《中国居民营养与慢性病状况报告(2020年)》中对我国居民的体型变化描述,收集整理所需的人员体型数据;然后,确定不同体质指数(Body Mass Index,BMI)人群的反应延迟时间、行走速度,在Pathfinder中构建ARJ21-700客舱人员疏散模型;最后,按照CCAR-25-R4中对人员年龄和性别比例的要求,分别对设计的机上人员肥胖率按比例逐渐增加的5种场景进行疏散仿真。结果表明,相较于场景1中的正常BMI组,当成年组、老年组的BMI为超重肥胖的比例达到报告中的数值时,平均疏散时间为逼近规定阈值的76.91 s,增幅为26.39%,人员的平均堵塞时间也会有较大增加,应引起适航部门和航空公司的重视。展开更多
基金supported by the Civil Aircraft Pre-research Project of China
文摘Aircraft passengers are more and demanding in terms of thermal comfort. But it is not yet easy for aircraft crew to control the environment control system （ECS） that satisfies the thermal comfort for most passengers due to a number of causes. This paper adopts a corrected predicted mean vote （PMV） model and an adaptive model to assess the thermal comfort conditions for 31 investigated flights and draws the conclusion that there does exist an uncomfortable thermal phe- nomenon in civil aircraft cabins, especially in some short-haul continental flights. It is necessary to develop an easy way to predict the thermal sensation of passengers and to direct the crew to con- trol ECS. Due to the assessment consistency of the corrected PMV model and the adaptive model, the adaptive model of thermal neutrality temperature can be used as a method to predict the cabin optimal operative temperature. Because only the mean outdoor effective temperature ET＊ of a departure city is an input variable for the adaptive model, this method can be easily understood and implemented by the crew and can satisfy 80-90% of the thermal acceptability levels of passen- gers.
文摘为解决民机应急疏散试验过程中,不同类型人员难于组织、成本高昂、可重复性低的问题,采用计算机仿真技术模拟国产支线客机人员疏散试验。首先,根据《中国居民营养与慢性病状况报告(2020年)》中对我国居民的体型变化描述,收集整理所需的人员体型数据;然后,确定不同体质指数(Body Mass Index,BMI)人群的反应延迟时间、行走速度,在Pathfinder中构建ARJ21-700客舱人员疏散模型;最后,按照CCAR-25-R4中对人员年龄和性别比例的要求,分别对设计的机上人员肥胖率按比例逐渐增加的5种场景进行疏散仿真。结果表明,相较于场景1中的正常BMI组,当成年组、老年组的BMI为超重肥胖的比例达到报告中的数值时,平均疏散时间为逼近规定阈值的76.91 s,增幅为26.39%,人员的平均堵塞时间也会有较大增加,应引起适航部门和航空公司的重视。
