According to the introduction of the Japanese Defense Equipment Agency, Japan’s newly developed XF9-1 engine has a maximum thrust of 11 tons without afterburner. After the afterburner is turned on, the maximum thrust can reach more than 15 tons. That is a turbofan engine. What is the global level of 15 tons of additional thrust? What is the level of the XF9-1 engine in the world?
First of all, the 15-ton thrust is indeed a good figure. It is close to the 16-ton thrust of the F119-PW-100 engine used by the F-22 fighter, and it is also inferior to the F-135 and the Su-57 used by the F-35. The product’s 30" thrust of 18 tons is above the 14.5 tons of thrust of our turbofan-10B improved version (also known as turbofan-10C). So the Japanese XF9-1 engine's 15-ton thrust is ahead of us?
is actually not the case. The 15-ton thrust of the XF9-1 engine is just ground test data. It takes a long time for the development of an engine from ground test to installation on an airplane for test flight and mass production. Turbofan-10C is It has been actually installed on the J-20 fighter; in addition, the turbofan-15 has been reported in 12 years that the maximum thrust of the ground test is 18 tons, so the current progress of the XF9-1 engine does not represent much.
It is worth mentioning that Japan’s XF9-1 engine has indeed reached the world’s leading level, and that is the temperature before the turbine. The original words of the Ministry of Defense of Japan are like this: "Because of the adoption of Japan’s proud Material technology, the XF9-1 prototype ensures reliable operation at a temperature of 1800 degrees in front of the turbine. "If this is the case, the temperature in front of the turbine of 1800 degrees Celsius (about 2073K) is indeed the highest among the published data of various countries.
You must know that the front turbine of the F-119 and F-135 engines in the United States is only about 1700 degrees Celsius (about 1970K), and the temperature before the turbine is the biggest test for the turbine blades of the engine. According to the conclusions of related documents, the turbine of a turbofan engine For every 100 degrees Celsius increase in the front temperature, the maximum thrust of the engine can be increased by 15-20%. Therefore, it cannot be admitted that the temperature in front of the XF9-1 turbine can reach 1800°C, indicating that Japan's turbine blade material technology is indeed very powerful.
In short, for the Japanese XF9-1 turbofan engine, we should still look at it from a peaceful point of view and should not underestimate ourselves. It can reach 15 tons of thrust and a temperature in front of the turbine of 1800 degrees Celsius. If the engine is already in service, it can indeed represent the world's leading level. However, according to the current progress of the XF9-1 engine, it is difficult to actually mass produce the engine in 2030.
