反推力装置的安全性需求与经济性需求

Safety and Economic Requirements for Thrust Reverser

现代运营的涡扇运输机一般都配装反推力装置,最初设计反推力装置是为了飞机能在短的跑道降落,从而降低机场建设长跑道的成本。反推力装置不是适航条款必须配备的装置。随着飞机刹车、减速板能力的增强和可靠性的提高,以及运营中反推力装置产生经济性收益不明显的实际情况,飞机供应商认为不安装反推力装置时飞机经济性更高,但航空公司则认为:反推力装置的首要需求是提高飞机减速功能的安全裕度,是一个安全性需求,特别碰到雨、雪和污染跑道、高高原机场和中断起飞等情况,反推力装置是目前飞机必不可少的减速装置。

Now turbofan transport plane normally has the thrust reverser,or the economic requirement?In the beginning the thrust reverser can make the transport plane to be landed on the shorter runway in order to save the cost that airport need to build the runway more longer.with the capability promotion and the reliability growth of the wheel brakes and the speed brakes,and the profit of using the the thrust reverser is little in fact,the manulfacturer thinks that transport plane is better economy without the thrust reverser.Airlanes thinks that the chief target of the thrust reverser is to satisfy the safety requirement to add the margin for transport aircraft operations,is essential to achieve the maximum level of operating safety,especially when the runway has rain or snow or is polluted,and when the transport plane works in the high plateau airport or need take-off aborted.