Chapter 1538: How do you plan to give this money

Having determined the ownership of these items, only the last major item remains to be discussed.
This is the technical digestion, absorption and follow-up development of AN-20 and AN-24 turboprop engines and D-136 turboshaft engines that Tan Zhenhua brought from the Ivchenko Design Bureau.
Among these three types of engines, the AN-24 was a model that had undergone technology transfer when Soviet Russia and China had good relations. The former Soviet Russia also helped China build a plant and a plant for the development and production of such engines. , Both the 6608 Institute and the 6331 Factory, one of the four major research institutes of China Aviation Development, and the Zhuzhou Aero Engine Factory, the 6331 Factory, was the famous Uklan Madasiqi who provided technical support back then, but later this type of engine The production and follow-up R&D tasks were transferred to the Dongan Engine Factory in Habing City. The 6608 Institute turned to concentrate on surveying, mapping and copying the AN-20 engine. The result is the
Vortex
currently installed on the Huaxia Yun-8 transport aircraft. Propeller 6" engine.
With this origin, the task of digesting and absorbing these two types of engines falls on the 6608 Institute, and because the turboprop and turbofan engines are closer in terms of working mechanism, the 6608 Institute is also the core turboshaft engine research of China Helicopter. The leading unit in the field, so the technical digestion and absorption of the D-136 engine is also undertaken by the institute under the suggestion of the Ministry.
It is said that the 6608 Institute and Tan Zhenhua are still dealing with Tan Zhenhua for the first time. The chief engineer of the institute, Fei Bingfang, originally only attended the meeting with a purely technical exchange and an attitude of striving for a project, but he did not expect that this would cause the pie to be broken. With two eyes staring at Venus, the smile on that face suddenly couldn't be concealed.
Tan Zhenhua said on the spot that he supported the decision of the Ministry. Of course, he did not have the choice. The strongest technical strength of China's turboprop turboshaft engine is this plant in Zhuzhou. Although the Dongan plant has certain capabilities, it Its ability is mainly reflected in the production and manufacturing, after all, the skill in engine development is worse.
However, Tan Zhenhua also said that if you want to eat pie, you naturally have to be under pressure. Zhuzhou, who has obtained all the information, must complete a series of R&D projects that he designated according to the schedule. These projects include-the existing turboprop 5" and "Turboprop 6" two series of engines are deeply improved, especially the "Turboprop 6". Within 5 years, it is necessary to successfully develop a model with a maximum thrust of 5000 shaft horsepower and an average use power of more than 4,500 shaft horsepower. Modification, the fuel consumption is controlled within 0.32kg/kWh, and the power-to-weight ratio is to be level 4.
Judging from the current international technology level, this is not a very high requirement, or it is actually a very "backward" requirement, basically equivalent to the level of the United States or Britain in the late 1970s and early 1980s, but This request made Fei Bingfang very embarrassed, because both the "Turboprop 5" and "Turboprop 6" were the first generation of turboprop engines from the former Soviet Union, and Zhuzhou did follow-up research and development on them. Most of the work can only be regarded as tinkering, and he didn't dare to change the basic structure. Now he suddenly said that he wanted to improve so much, he felt very uncertain.
Tan Zhenhua didn't think so. He also explained his point in public: The reason why he spent a lot of money to buy the precious D-136 turboshaft engine from Ivchenko was not because I want China to launch this level of engine immediately. Of course, a turboshaft engine with an output of 10,000 horsepower will be needed by China. This is the basis for the development of heavy helicopters. But he also knows that there are priorities. With China's current capabilities and actual needs, it is impossible to put it important in the short term. In terms of location, the demand for this type of engine is not so urgent. Digesting and assimilating its technology is the first purpose for him to buy the technology of this type of engine, and the first thing he needs to understand is the D-136 engine. The free turbo technology used on it.
Looking at the development of global turboprop turboshaft engine technology, after entering the 1970s, leading companies have successively overcome the technical difficulty of "free turbine", and therefore a large number of turboprop turboshaft engines with excellent performance have emerged. For example, in the field of civil aviation engines, the sales king of this type of engine, Pratt & Whitney's PT6A/PW100 series, etc., these engines have reached a good balance in terms of performance, fuel consumption, life, and cost. Even after entering the 1990s, A variety of third-generation turboprop turboshaft engines have appeared one after another, but they still maintain vigorous vitality, because the technical progress made by the third-generation turboprop turboshaft engines is far less than the actual performance. The second-generation leapfrog improvement over the first-generation products.
All of these fully demonstrate that mastering the "free turbine" technology can have a huge impact on improving the performance of these two types of engines.
The D-136 turboshaft engine is a second-generation turboshaft engine!
The so-called "free turbine" refers to the turbine that drives the propeller that actually does work. It is not directly connected to the turbine that drives the compressor. It is directly driven by gas and then decelerated by the reduction gear box to drive the propeller.
The biggest advantage of this design is that it can match the most suitable speed for the working propeller and the driving turbine without taking into account the speed of the compressor turbine, because the diameter of the propeller and the turboshaft are too large. If the speed is too high, the propeller The wingtips can easily exceed the speed of sound and cause a series of problems.
After adopting "free turbine", the inlet temperature and compressor speed can be further increased, thereby increasing the output power of the engine.
To be honest, many people here understand what Tan Zhenhua said, and they understand more deeply than him. After all, are they experts in the aviation field? Several of them are still leaders in the aviation industry. Where do you need Tan? Second, do science?
How many people do not understand the benefits of "Free Turbo"? The problem is not in this aspect at all, OK? The problem is that it is too difficult to master this technology thoroughly, and not only must it be thoroughly mastered theoretically, but it also needs to be realized in engineering applications, and a series of process problems need to be solved in the manufacturing process!
This is quite similar to building a brand-new engine, but Tan Zhenhua gave a specific timetable-5 years. Is this too difficult?
"I have brought in a complete set of drawings of the "Free Turbine" mechanism and all the experimental parameters when the D-136 was designed and manufactured. I even brought in an experienced team of experts to help you. With the support of our various advanced achievements in the material field in recent years, we will invest 100 million U.S. dollars in this engine. Is this not enough?"
Caibo moved people's heart, and Fei Bingfang gritted his teeth and stomped his feet, "Five years to five years, I will give my life to fight it, and we will take it in Zhuzhou!"
Smiles appeared on everyone’s faces, Tan Zhenhua is no exception, but he heard Chief Engineer Fei add another sentence afterwards:
But Dr. Tan, let’s say it’s 100 million US dollars, not RMB. , How do you plan to give this money?"