直升机灭火系统灭火剂浓度时间分布特性试验研究  

Experiment Study on the Distribution Characteristics of Fire ExtinguishingAgent Concentration in Helicopter Fire Extinguishing System

作　　者：李松松 韩代春 吴燕燕[1] 李春[1] LI Songsong;HAN Daichun;WU Yanyan;LI Chun(China Helicopter Research and Development Institute,Jingdezhen 333001,China)

机构地区：[1]中国直升机设计研究所,江西景德镇333001

出　　处：《直升机技术》2024年第2期46-50,共5页Helicopter Technique

摘　　要：通过对直升机灭火系统灭火剂浓度扩散进行试验研究,分析了在不同单位体积通风量、不同灭火剂及不同压力状态下的灭火剂喷射后浓度分布特性。通过对时间特性和分布特性的试验研究,分析了单位体积通风量变化对灭火剂浓度维持时间的影响以及单位体积通风量变化对浓度变化率的影响,给出了单位体积通风量低于1.32 kg/(s·m3)时,应留有较大设计余量的措施。This article conducted experimental research on the concentration diffusion of fire extinguishing agents in helicopter fire extinguishing systems,and analyzed the extinguishing agents sprayed under different unit volume ventilation,different fire extinguishing agents,and different pressure states.Through experimental research on time and distribution characteristics,the influence of unit volume ventilation on the maintenance time of fire extinguishing agent concentration and the influence of unit volume ventilation on concentration change rate were analyzed.Measures for leaving a large design margin when the unit volume ventilation was less than 1.32 kg/(s·m 3)were proposed.

关 键 词：灭火系统 浓度分布 分布特性 

分 类 号：V228.6[航空宇航科学与技术—飞行器设计]