CAJ | 학술논문

受低纬度区域低空空气高湿度影响，民用客机对适航条款FAR/CCAR25.831( g )的符合性验证非常困难。以FAA的MSHWG报告为指导，通过验证座舱温、湿度限制等效安全规则间接验证某型民用客机对适航条款FAR/CCAR25.831(g)的符合性，即采用热分析方法计算民用客机通风系统失效时座舱内部乘员人体核心温度的变化，并将其与MSHWG报告规定的人体核心温度标准值对比，说明某型民用客机对适航条款FAR/CCAR25.831(g)的符合性。
수저위도구역저공공기고습도영향，민용객궤대괄항조관FAR/CCAR25.831( g )적부합성험증비상곤난。이FAA적MSHWG보고위지도，통과험증좌창온、습도한제등효안전규칙간접험증모형민용객궤대괄항조관FAR/CCAR25.831(g)적부합성，즉채용열분석방법계산민용객궤통풍계통실효시좌창내부승원인체핵심온도적변화，병장기여MSHWG보고규정적인체핵심온도표준치대비，설명모형민용객궤대괄항조관FAR/CCAR25.831(g)적부합성。
It's impossible for civil aircraft to comply with FAR/CCAR 25. 831(g) under the assumption of loss of all conditioned airflow for flight in failure conditions, including descent and landing. It has been speculated that the fixed humidity level of 27 mbar appears to be a reasonable limit for altitude conditions around 10,000 feet. Unfortu-nately this humidity level is often exceeded at lower altitudes and near sea level for airport ambient conditions. The Mechanical System Harmonization Working Group (MSHWG) Final Report on FAR 25. 831(g), dated July 31, 2003 proposed action is to harmonize on a new, performance-based regulation for failure conditions not shown to be extremely improbable. The objective of this regulation is to preserve a tolerable environment by limiting the meta-bolic and environmental heat loads to passengers and crew during exposures to a potential heat stress event. Rela-tive to the current FAR/CCAR 25. 831(g), and considering the inapplicability of its humidity requirements, the proposed regulation does not reduce the current level of safety. A thermal analysis simulation for calculating body core temperature of passengers and pilots is presented and simulated body core temperature is compared with stand-ard temperature value defined in MSHWG report . The computing results are applied to validate one aircraft compl-ying with FAR/CCAR 25. 831(g) according to the new regulation in MSHWG report.