20世纪60年代,我国在摸透和仿制成功从苏联引进的米格-21飞机的基础上,开始了自行设计第一架高空高速歼击机——歼8。设计歼8飞机的关键之一是能否研制出推力大、油耗低的新发动机。新发动机的核心部件是高温涡轮,而高温涡轮的关键又在于能否搞出强制冷却的空心涡轮叶片。空心涡轮叶片就成为发动机研制中关键的关键。这一飞 In the 1960s, on the basis of thoroughly exploring and imitating the MiG-21 successfully introduced from the Soviet Union, China began to design its first high-altitude and high-speed fighter J-8. One of the keys to designing the J-8 is whether it can develop a new engine with large thrust and low fuel consumption. The core of the new engine is a high-temperature turbine, and the key to the high-temperature turbine lies in the ability to produce forced-cooled hollow turbine blades. Hollow turbine blades have become the key to the development of the engine. This fly