"But when it comes to the 603 Institute, I really need to go over to see it after a while, and there is a new breakthrough in the project there, which can be regarded as the first time for us in AVIC Southwest, and in the future, our narrow-body trunk airliner field will at least not continue to be blank. Pen Fun Pavilion www.biquge.info"

"You mean C-818? I thought that the speed of not getting to the 603 Institute was quite fast, but this time the prototype was off the assembly line, or was it to prepare for the first aircraft test? ”

In fact, there are not many projects in the hands of the 603 Institute now, and the only thing that can make Yang Hui so excited, except for the C-818 project, really can't think of any other projects, and he has to run over in person at this important juncture, so as long as he knows some inside information, he can still easily guess the purpose and reason of Yang Hui's this time.

Fortunately, there is nothing here, the C-818 has completed the design of the facelift, the first prototype has already completed the manufacturing work, and the relevant static tests have been carried out for a while, and now Yang Hui is invited to the 603 Institute this time, in fact, it is just to see the first flight of the aircraft, and there are some other issues that are also planned to be settled together.

And the most important point of this is that the United Passenger Aircraft Company is ready to eat the big order from Iran, and Yang Hui is inexplicably happy when he thinks of the news he received before.

"In fact, C-818 is just a reason, this time to the 603 Institute, but also for a cooperation order with foreign countries, although the total amount of the order is not too large, but its significance is not small, and the most important thing is that this time is only a civil aircraft order, even if the order can be negotiated in the end, it will not affect our relations with other Gulf countries, so now we need to get Iran's requirements first."

For the so-called Iranian order, it is actually not too big, only 80 regional turbopulp passenger aircraft demand, the only problem is because Iran is requiring the license assembly of the aircraft, but when the license is assembled, this involves some European and American subsystems of the MAhn series of airliners It is difficult to sell them to Iran alone, so after integrating all the problems, the localization requirements for the MAoW series of airliners have been raised.

So what's interesting is that the complete localization of the new boat passenger aircraft is not because of domestic demand, but because of foreign reasons, which requires the new boat to realize the localization of the republic, which sounds really a little interesting, and to talk about the realization of the localization of the new boat series turbo airliner, in fact, AVIC Southwest really does not need to spend much effort to achieve, many of the subsystems are actually in the country with relevant finished products available.

For Yang Hui's Iranian airliner order, Yang Yue's first thought is actually the MPC-75 passenger aircraft, at least at first glance, the use of MPC-75 can fully meet Iran's requirements, but in fact, after calculating the gains and losses in one aspect, it will be found that Iran's use of MPC-75 actually has a lot of range is redundant.

"Iran, are they going to prepare to purchase MPC-75 airliners? This is a bit of a possibility, but there shouldn't be a need to use jetliners like the MPC-75 for their domestic civil aviation transportation, right? ”

It's not too stupid, knowing that the MPC-75 is not quite suitable for Iran's specific national conditions, and then Yang Hui also made the news public: "That's right, Iran is not interested in our MPC-75 passenger aircraft, but the MA series turbopul passenger aircraft that we exhibited at the Paris Air Show before, and they intend to cooperate in the production of 80 MA series passenger aircraft for Iran's domestic air transport, so we now need to replace the avionics, engines, and environmental control systems of MA with the products we can provide in China. But fortunately, at this time, the MA600 passenger aircraft led by Ivchenko has not yet been completely finalized, and there is no problem in adding another model that we are completely localized. ”

Since it has been determined that the subsystems including the engine are all localized, then Yang Hui needs to go to the 608 Institute in Zhuzhou before this, and the localized Xinzhou 600 power system can only rely on the 608 Institute, as for the equipment such as avionics and environmental control, the units that have been doing technical research in this area in China have been doing this before, and even in the era of the passenger and cargo dual-purpose aircraft of the MA60, the avionics and environmental control systems are all provided by China. That is, when the MA600 was to impact the international market, a series of foreign subsystems were used.

.....

Zhuzhou 608 Institute, also as a complete machine research institute under the United Aero Engine Company, but here is mainly for small thrust turbojet, turbofan, as well as various types of turboshaft, turbo pulp engine, so this time Yang Hui's arrival, in fact, the first thing to see is of course about the progress of MZ-2200 engine development and testing.

As the power system of the Z-18 general helicopter, the research and development time of the MZ-2200 is much earlier than that of the Z-18, as for the core engine used in the engine, it is quite a distant thing, anyway, if you want to count it, from the beginning of the development of the MZ-2200 engine, it has been 5 years since 95 years, and the development of the engine has entered the end.

It was none other than Chief Yin who was in charge of the development of the MZ-2200 engine, and he had already received the news from Yang Hui several days in advance, knowing that the MZ-2200 engine was going to be changed from a turboshaft to a turbo engine, and it was false to say that he was unhappy.

With Yang Hui, he came to the side of the institute's engine air test plane, and Yang Hui also saw the model of this aircraft at first sight, it turned out that this was really a direct improvement of a straight 8 helicopter, and it became an air test platform for turboshaft engines, but depending on the situation, it seems that Yang Hui can only watch from a distance at this time.

Looking at the constantly rotating aircraft, Chief Yin was also quite proud: "We have not developed a turboshaft engine in China before, so all kinds of test conditions are not available, and the air test platform of the aero engine is only used to test the turbojet and turbofan engines, and now the entire air test bench we see is our latest development, mainly used to test the turboshaft engine." The Z-8 has three engines, and as long as two engines can operate in the design, the safety of the aircraft can be guaranteed, so we removed the left engine for installation and testing of the MZ-2200, and even if there is a problem with the new engine, the aircraft can fly back safely. ”

The more engines, the higher the safety factor, this is really not bragging, the same level of helicopter, this time the choice of straight eight as the flight platform instead of the Mi 17 series to improve, the reason is that the Mi 17 only has two engines, and the safety factor after replacing one is really hard to say.

After understanding the good intentions here, Yang Hui was more concerned about the development progress of the engine: "How long will it take to finalize the type, and now the Z-18 has always been risky to use your immature engine for test flights, which has always been quite dangerous!" ”

Not to mention, in order to ensure the progress as soon as possible, the 602 Helicopter Research Institute in Porcelain Town really risked all kinds of dangers to use the unfinalized MZ-2200 engine for test flights, but fortunately, the test flight was strictly planned, and the test flight project was planned according to the test items that the MZ-2200 had done here, which ensured the safety of the aircraft's test flight. (To be continued.) )