What is the life span of domestic aircraft engines?

The service life of China's advanced third-generation fighter engine has exceeded 10000 hours, reaching the international level \x0d\ As for the latest model, it is confidential and needs time to verify. \x0d\\x0d\ American and Russian aero-engine life design is based on different war concepts. American aero-engine design is based on the training life of aircraft. Generally, the total service life is more than 5,000 hours, which can basically be synchronized with the service life of fighters and will not be shot down or crashed. For example, F- 16A/B model 1980 was put into use, but it was retired before the whole life of the engine. Although the engine of American fighter has a long life, it is too "delicate" and its safety and reliability are not ideal. Because of the high frequency of engine breakdown, it is called "widow maker". And the price is expensive, a F- 1 10 reaches130,000 dollars. Russian engine design was originally designed according to the concept of war. It is believed that the fighter is going to fight, and the engine life is no longer. Once the defeat is equal to zero, it is a waste to have a long life. Therefore, according to the average life span and training crash probability of fighters during World War II, the life span of fighters is calculated to be 300 hours, so the engine life before MIG 2 1 is designed to be 300 hours. Later, the quality and function of fighters were improved, and the life of Russian engines was also improved accordingly. Take AL-3 1F of the same model as F-10 in the United States as an example. The life of AL-3 1F is about 3000 hours. Regardless of the defeat and crash of the fighter, according to the annual training flight 150 hours, an engine needs to be replaced in about 20 years. In other words, from the new fighter to retirement, it is necessary to replace the engine once to synchronize with the life of the fighter. However, the aero-engine in Russia is cheap, and the AL-3 1F is only $3 million, which is less than a quarter of that of F- 1 10. Regardless of the war damage, the cost performance is much higher than that of the United States. Moreover, the Russian engine is solid, safe and reliable, and it is not easy to break down. Russia's "Blizzard" space shuttle loaded with six AL-3 1F has been used repeatedly without any accident. Of course, Russia's current design concept is also changing, and the engine life is constantly improving. The engine life of Su 35 1 17S can reach more than 4,500 hours. \ x0d \ x0d \ At present, the engine in China is still in the learning and groping stage, and it is a gratifying achievement to build a large thrust engine. After all, the life of the engine on the battlefield is of low importance, and it is only increased in peacetime to save military expenses.