Smoke and toxicity test airworthiness research on APU inlet system of civil aircraft
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维普
民用飞机辅助动力装置系统(auxiliary power unit,简称APU)安装在飞机后机身APU舱内,APU舱着火的最初5 min内可假设由于火警探测、人工或自动停车以及灭火剂释放的延迟,APU系统仍处于工作状态.此时,APU舱和APU进气系统内非金属材料产生的可燃烟雾和有毒气体易通过APU引气系统进入驾驶舱和客舱,对人员安全造成较大影响.针对适航要求,从APU进气系统烟毒试验标准研究人手,通过某型民用飞机APU进气系统烟毒适航符合性试验,对APU进气系统着火情况下的烟毒引气污染问题开展研究,对APU进气系统中不同材料非金属结构开展烟毒试验研究,结果表明该型民用飞机APU进气系统在着火情况下不会产生烟毒引气污染问题.
The auxiliary power unit(APU)system for civil aircraft is installed in the APU compartment at the rear fuselage of the aircraft.During the initial 5 minutes of a fire in the APU compartment,assuming a delay in fire de-tection,manual or automatic shutdown,and discharge of fire extinguishing agent,the APU system may continue to operate.During this time,combustible smoke and toxic gases from non-metallic materials inside the APU compart-ment and APU air intake system can easily enter the cockpit and cabin,posing a significant safety risk to person-nel.In response to airworthiness verification requirements,research into the smoke and toxicity testing standards for APU air intake systems was conducted.A study was carried out on the APU air intake system smoke and toxicity airworthiness compliance test for a certain type of civil aircraft.The result shows that the APU intake system of this type of civil aircraft will not cause smoke toxicity to cause gas pollution.
inlet systemsmoketoxicityairworthinessexperimental research
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维普
