民用直升机应急供电研究

Research of Helicopter Emergency Power Supply Endurance

直升机主电源系统完全失效后,应急电源需保证继续安全飞行及着陆的电能供给。通常情况下,应急电源容量较低,仅能保证直升机紧急返航或尽快着陆所需的供电。较大的容量可为直升机提供更长时间的供电,但也会增加较大的重量。中国民用航空局发布的资讯通报中给出了应急电源的供电时间要求,可作为设计的最低可接受值。设计中若能尽量延长应急电源的供电时间,则可为驾驶员在应急状态下提供更多的安全保障。

When primary electric power system of helicopter fails,the emergency power should provide enough electric power for continued safe flight and landing.Usually the capacity of emergency power is low,and it can only ensure the power supply for helicopter to return to base or land as soon as possible.Higher capacity can provide longer emergency power supply for helicopter,while it will increase more weight.The advisory circular issued by CAAC provides the requirement of emergency power supply endurance,and it could be considered as the lowest acceptable value.If the emergency power supply endurance can be extended by design,it could provide more safe assurance for the pilot in emergency condition.