Under normal circumstances, what is the concept that the core machine flow rate can reach the level of 9kg/s?

In the United States, the T-64 turboshaft engine used in heavy helicopters, the core engine flow is only 12KG/S, which is directly used to make CH-53 kinds. The power of the horse heavy helicopter is 3,000 horsepower, and the later improved model even reached 4,000 horsepower.

Although, the flow rate of the MS-4 core engine here is 9kg/s, which is a lot larger than the T-700 engine, and it should be used to develop a turboshaft engine, which should be able to exceed the T-700 series in terms of power, even if it is changed to the Republic to do this project, with the basic industrial level of the Republic, it is no problem to use this core machine to make an engine that reaches 2300 horsepower.

"We develop a turboshaft engine on the basis of this core machine, which is theoretically very beneficial, the same core engine flow, our core machine and the core engine of the Soviet TB2-117 engine are closer in performance, the core flow of the TB2-117 engine is 8KG/S, and the power of 1800 horsepower was made with the Soviet technology in the late 60s, and now we can guarantee at least 2300 horsepower."

This is the gap, the same core machine, American technology can do about 2700 horsepower in any way, if you change to the current level of Soviet technology, there should be no problem to reach 2500 horsepower, but in the republic, this can only be done 2300 horsepower.

This is that the accumulation of pure historical experience is not enough, at least from the point of view for now, the republic has not yet succeeded in developing a full-fledged turboshaft engine, and the technical level is still not comparable to the other two super-hooligans.

But in any case, if a mature turboshaft engine with 2,200 horsepower can be developed on the basis of this core machine, it will also be a great breakthrough, which will mean that a strong heart that can fully meet the needs of a 10-ton general purpose helicopter can be used.

With such a powerful heart, even if it is used for altitude take-off and landing, it is not a problem at all, at least it is 600 horsepower more than the 1700 horsepower of the T-700GE-401, and the performance is really good.

As for whether the development of a new generation of 10-ton general-purpose helicopters using the core engine of the MS-4 engine will encounter the problem of excessive engine volume, this is a question worth considering. But in any case, such a turboshaft engine must be larger than the T-700 in size.

However, if you compare it with the TB2-117 engine, this guy can be smaller in size, after all, the core engine used in this engine is the technology of the 80s, which is far more than the technology of Maozi in the 60s in all aspects.

On this point, the 608 Institute seems to have something to say: "We have calculated, on this pre-research turboshaft engine, in the core engine performance is completely more than TB2-117 engine, our door uses a seven-stage axial flow core engine design, compared with TB2's 10-level compressor less than three levels, plus TB2 in the design, leaving a lot of margin, so the volume of the engine appears to be relatively large." If our engines have strict size requirements, they should be controlled to a length of 1.5 meters. I think it should be doable. ”

The length of the engine can be controlled to a length of 1.5 meters, which is indeed a lot shorter than the length of the TB2-117 engine of 2.3 meters, but compared to the RTM-322 engine jointly developed by Britain and France, the length of 1.1 meters can output 2200 horsepower, there is still a lot of gap.

But in any case, such an engine should be the most suitable project for the development of a turboshaft engine for 10-ton general-purpose helicopters after the Republic has now balanced all aspects.

This alone is already very drooling, who let our republic can only be at this level now, and the length of 1.5 meters is not much longer than the T-700, even if the republic still plans to develop a Z-20 aircraft in the future, this engine can be installed to meet the needs.

"Yes, I think this engine is already very good, and we will use it to develop our own turboshaft engine in the future, at least a big guy who can reach 2200 horsepower, not to mention any plateau take-off and landing, that is, if you want to fly over Mount Everest, it is completely possible!"

In the previous place, the Republic really completed the feat of flying over Mount Everest is the magic model of the Z-8: Z-18, but now it seems that there may be another engine driving another helicopter to complete, and this engine is naturally still in the stage of model pre-research.

"Mr. Yang, we will definitely have to fly over Mount Everest in the future, but the problem now is that this engine has no national project, we can only stay on the basis of model pre-research, and continue to develop, unless, as you said just now, the head office will pay part of the money, and then our 608 and 331 factories will also contribute part of the project to achieve the company's internal project."

Well, this is really going to take the road of the company's internal project, and now Yang Hui understands a little, this time the new turboshaft engine must be launched, otherwise the engine will have to lag behind the aircraft in the future.

"Yes, this time you go back and report the project materials first, now it is the head office system, we still have to go through the formal process, and we can't do it like before. But don't worry, in three months at most, the head office will be able to give you the internal project approval, and then it will be exactly 92 years, and the MS-4 engine over there is almost complete, and you can start to invest in the research and development of the new turboshaft. ”

This time, Yang Hui has made a bloody investment, as long as the new turboshaft engine can meet the needs of use in performance, it must be unswervingly developed, as for the problem that the 608 has not developed a complete turboshaft engine, this is easy to do.

First of all, the new turboshaft engine is developed on the core aircraft developed completely independently by the Republic, and United Aero Engines knows this core aircraft well, and all aspects of this core engine have been tested in the development process of the MS-4, and the design problems of the strict zhòng have not been exposed, even if there are some small troubles, they have been solved in the development process of the MS-4.

And the most important point is that in the team that developed the MS-4 engine, there were a large number of technicians from the Ivchenko Design Bureau, and these designers really only made turbofans and turbojet engines?

(To be continued.) )