摘要
直升机(飞机)动力舱灭火系统进行试验时需要准确测量灭火剂浓度随时间变化情况。利用空气中不同百分比的灭火剂流经多孔塞产生不同流阻的原理,研究并标定流阻与灭火剂浓度的关系;研制灭火剂浓度测试设备,并将该设备应用于多个型号的地面试验。结果表明:该设备响应灵敏,能实时反应动力舱内灭火剂浓度的变化情况,满足直升机(飞机)动力舱灭火系统地面模拟试验要求。
It is necessary to measure the situation of extinguishing agent concentration along with time in the ground simulation test of helicopter/airplane powerplant.The principle that the different percentage of agent in the air has different flow resistances when these agents passing through some porous plug is used,the relation of agent concentration and flow resistance is researched and confirmed by the calibration.The special extinguishing agent concentration measurement is developed,and used in the ground simulation test of several helicopters.The results show that,the measurement has sensitive response,can reflect the varying situation of extinguishing agent concentration in real-time,and satisfy the requirement of ground simulation test in the fire extinguisher system of helicopter/airplane powerplant.
作者
吴燕燕
杨小龙
李海涛
罗铁苟
郑友兰
闵兴明
WU Yanyan;YANG Xiaolong;LI Haitao;LUO Tiegou;ZHENG Youlan;MIN Xingming(Electro-mechanism System Department,China Helicopter Research and Development Institute,Jingdezhen 333001,China;Hunan Cangshu Aerospace Technology Co.,Ltd.,Changsha 410201,China)
出处
《航空工程进展》
CSCD
2020年第5期746-751,共6页
Advances in Aeronautical Science and Engineering
关键词
直升机
专用灭火剂浓度测试设备
灭火剂浓度
地面模拟试验
动力舱
helicopter
special extinguishing agent concentration measurement
extinguishing agent concentration
ground simulation test
powerplant
