最近,欧洲直升机公司计划利用最新技术研制X3高速直升机,意欲竞争世界飞行速度最快直升机的名号。该机试飞时速达460千米。仅仅在数日前,欧直公司的竞争对手美国西科斯基公司刚刚宣布制造出X2型直升机,飞行时速约为463千米。很明显,这两种高速直升机主要是根据军 Recently, Eurocopter plans to use the latest technology to develop the X3 high-speed helicopter, intended to compete in the name of the world’s fastest helicopter flight. The test flight speed of 460 km. Only a few days ago, Eurocopter rival US Sikorsky Company just announced the manufacture of an X2 helicopter at a flying speed of 463 kilometers per hour. Obviously, these two high-speed helicopters are mainly based on the military