超大型飞机动力的三大关键与对策

Powerplant of Very-Large Aircraft

在新一代大型涡扇发动机即将随波音777投入航线运营之际,世界各大发动机制造商开始把注意力放在为下一代大型民用运输机提供动力装置上。预计,超大型飞机(VLA)可载客600～800人,航程达14800公里,最大起飞总重为365～455吨。VLA的研制要耗资150亿美元,这意味着要售出500架以上VLA才能做到有利可图。罗-罗公司的有关人士认为,今后肯定需要比现有波音747大的飞机以提高航空公司的营运效益。

Now, the world's leading aero-engine manufacturers are turning their attention to the development of next generation Very Large Aircraft ( VLA ) . Three of the key driving forces behind VLA powerplant development will be the number of engines needed, thrust requirements and environmental issue.