与其他类型的航空发动机一样,涡轴发动机性能的改进都与材料有关,材料性能的重大变革必然会导致发动机性能的改进。选材料特点涡轴发动机的选材和其他航空涡轮发动机有共性,但根据功能、用途的不同,涡轴发动机的选材也有其自身的特点。这些特点是: 高的功率重量比 涡轴发动机从50年代开始研制至今已有40多年的历史。按功率重量比划分,涡轴发动机大致可分为4代。目前广泛使用的 As with any other type of aeroengine, improvements in turbine shaft performance are material dependent, and significant material property changes inevitably lead to improved engine performance. Selection of material characteristics Turboshaft selection of materials and other aviation turbine engines have common, but according to different functions, uses, turboshaft selection of the material also has its own characteristics. These features are: high power-weight ratio turboshaft engine has been developed from the 50’s up to 40 years of history. Divided by the power and weight ratio, turboshaft engine can be divided into 4 generations. Currently widely used