From 65438 to 0970, Yin Zeyong, who entered the AVIC Institute of Aerodynamic Machinery, took the lead in the research and application of the frontier discipline of "finite element" with a forward-looking vision. The turboshaft engine he is in charge of overall technical work is the first aero-engine designed by pre-research in China, and it is also a successful exploration of integrating China's aviation technology with the world's advanced aviation technology.

This technology has broken the monopoly of foreign countries in this field and blocked the engine products, embarked on the road of independent innovation and independent development, and cleared the biggest obstacle for the next advanced helicopter equipment. The fundamental transformation from imitation to independent research and development of turboshaft engine in China has been completed, and the leap-forward development of turboshaft engine technology from the first generation to the third generation has been realized. As a result, China has become one of the few countries that can independently develop advanced turboshaft engines with independent intellectual property rights.

During the development of the first turbofan engine successfully developed and designed in China, Yin Zeyong presided over the formulation of the model specification of the first turbofan engine in China in strict accordance with the requirements of China's military standards; He presided over the compilation of the first reliability outline for aero-engine model development in China, and demonstrated and successfully practiced how to carry out reliability work in combination with the analysis and test specified in the specification. Presided over and solved the matching problem of engine and aircraft performance and structure; Combined with the application characteristics of domestic engines, the method of determining the initial first rotation period is creatively put forward.

The first engine was successfully developed-it achieved a breakthrough in this field in China in the 1960s, reached the level of similar engines in international service, improved the development technology of turbofan engines in China, played an important role in promoting the development of small and medium-sized turbofan engines in China, and was a major achievement of scientific and technological progress.

At present, the engine has been assembled with a large number of aircraft, which has changed the passive situation that the aircraft power plant depends on imports. The development and application of the engine won the gold medal for the development of weapons and equipment in national defense science and technology industry in 2003, the first prize for national defense science and technology progress in 2004 and the second prize for national science and technology progress in 2005.