C1140 He Had to Improve the Craftsmanship

In the engine, the leaves play a vital role. Moreover, in the process of working, the leaf had to be affected by centrifugal force, air power, thermal stress, interchangeability, random load, and so on and so forth. Under the effect of all kinds of load, the leaf could easily cause high periodic fatigue, heat fatigue, and low periodic fatigue to be damaged