In addition to the C919, my country's large passenger aircraft also has the CR929 that is being jointly developed with Russia, and their power systems are all imported from abroad. However, there are also matching domestic engines, namely Changjiang 1000 and Changjiang 2000, or CJ-1000A and CJ-2000. Although domestic engines have not yet been put into use, the name is very resounding and Chinese. Just like the Yellow River, the Yangtze River is the mother river of the Chinese nation. However, if you change the names of Changjiang 1000 and Changjiang 2000 to AEL1300 and AEF3500, do you still remember?
2018 CJ2000 was renamed AEF3500
Yes, in 2018, Changjiang 1000 and Changjiang 2000 engines had been renamed AEL1300 and AEF3500. This is like Lanling renamed Zaozhuang, no, just like Lanling changed its name to Jujube village, which made the monk Zhang Er confused. And one is AEL, the other is AEF, the abbreviations are not the same, it is really life-threatening for patients with obsessive-compulsive disorder.
The name of CJ1000A seems to be changed back again
Of course, this renaming also has an advantage, that is, it allows the outside world to see the thrust of the engine at a glance. AEL1300 is 13 tons of thrust, which is the same as the CFMP used in the current C919 prototype. The performance of the -1C engine is the same, especially the fuel consumption and reliability indicators are basically close, while the AEF3500 means a thrust of 35 tons, which actually reaches 35.7 tons, which is relatively close to the PD-35 being developed in Russia.
looks like Transformers
According to the latest news, as early as August 2020, the third engine of CJ-1000A began to be equipped with radio telemetry equipment, ready to be installed in Yanliang test pilot’s The first flight on the IL-76 test platform,It has been more than a year now, and it should have been on the plane long ago, but the specific progress has never been disclosed to the outside world.
The Il-76 was installed for a test flight a year ago
CJ-1000A is very similar to the CFM LEAP-1C engine currently equipped with C919 in terms of overall size, weight, thrust and fuel consumption. The goal of the development is to It is convenient to replace the aircraft in the future and reduce the workload of modification and flight test. However, there is still a generation gap between CJ-1000A and LEAP-1C in terms of material application. Although the outside world predicts that its installation time is 2025, according to the latest news, the development of CJ-1000A is very smooth, and C919 can be installed in 2023.
The C919 can be installed for flight test in 2023.
The CJ-2000 with a maximum thrust of 35.7 tons, if successfully developed, will be the largest thrust engine in the history of my country's aviation development, so its difficulty is also very high. The core machine of CJ-2000 was once passed as an enlarged version of CJ-1000A. But in fact, the relationship between the two is not very big. It is impossible to expect to enlarge and shrink the core engine of CJ-1000A to evolve a different engine.
The core engine of the engine is not dough
The same is true of the regional airliner ARJ21 's domestic engine CJ-500. There are rumors that it is simply a reduced version of the CJ-1000A fan. All development and testing links All the way is smooth, you can install and fly at any time after next year. But in fact, the development of CJ-500 was not as smooth as imagined, and even rarely appeared in the media.
The total demand for ARJ21 is not much
The reason is that the turbofan engine of this thrust class is only used in the civilian market, and ARJ21 is far inferior to C919. And the future CR929, so the lack of demand is the biggest bottleneck encountered in the development of its domestic engine.
Insufficient demand is the biggest bottleneck encountered in the development of domestic engines
In fact, with the development of drones, ARJ21 can also be used for strategic reconnaissance drones similar to the "Global Hawk" high altitude and long endurance. The domestic engine CJ-500. At present, we are using the turbojet engine , which has obvious performance defects. If the CJ-500 is developed, it can help the domestic high-altitude long-endurance strategic reconnaissance drone to take another step.
The biggest demand of CJ-500 is here
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