In the next series of experiments, the new power system and new transmission system brought more and more surprises to everyone:

Not only is the lift of the main rotor system 18% higher than that of the "aerial crane", the transmission efficiency is increased by 21% compared with the "aerial crane", and the fuel consumption of the four turboshaft-2500 engines is also 34% lower than that of the two Pratt Whitney Canada JFTD-12A-4A turboshaft engines on the "aerial crane"!

The higher efficiency of the rotor system and the higher efficiency of the drivetrain means that the engine can operate at lower loads, and lower loads mean lower fuel consumption......

All of this is combined, with the same fuel tank capacity, the maximum windless range of the "aerial crane" produced by COMAC has reached 680 kilometers, which is almost 65% more than the maximum windless range of 426 kilometers of the original "aerial crane" of Bisikorsky!

This also means that if the transportation task is carried out over the same distance, the "aerial crane" produced by COMAC can complete the transportation with less fuel and lighter fuselage weight.

This sounds a little incomprehensible, the engine technology of the Americans is so advanced, and it is good that the performance indicators of the "aerial crane" produced by COMAC can meet the technical indicators of the original "aerial crane".

This simply subverts everyone's perception of American technology!

But in fact, if you think about it carefully, it is very clear: first of all, the engine, the JFTD-12A-4A turboshaft engine of the original "aerial crane" was developed by Pratt Whitney Canada in the 50s, and belongs to the first generation of single-rotor centrifugal turboshaft engines. The efficiency is low, the fuel consumption is high, and the turboshaft-2500 adopts the technology of the AI-222-25 twin-rotor engine of the Ivchenko Design Bureau of the Soviet Union, which is a turbofan engine that is strong for military and civilian use when it is designed, and it is a third-generation small and medium-thrust turbofan engine, and the turboshaft-2500 turbo engine is the core engine of AI-222-25.

Although Lao Maozi's aero engine has never been very fuel-efficient, it is very easy to understand that the turboshaft-2500 is more fuel-efficient than the JFTD-12A-4A;

The engine is so, the final reducer and the main rotor system is the same, compared with the original "aerial crane" used in the helicopter technology of the 50s, the "aerial crane" of the COMAC group is fully adopted after the 80s technology, coupled with the application of various new rigid strength light materials, the weight of the "aerial crane" produced by the COMAC group is more than a ton lighter than the original "aerial crane", of course, the most important thing is Viktor Vladimirovich · With Kapaya's helicopter master, it is not difficult to understand that the range will increase by 65%.

These data soon became known to the largest users of this aircraft: the Army Aviation Force.

Knowing this news, where could the comrades of the road aviation unit still sit still? As soon as possible, a technical group was dispatched to the COMAC.

This technical team was sent for two reasons:

One is to assist COMAC in various tests of this helicopter...... At the same time, there is also the meaning of personal observation, after all, in everyone's opinion, the various data transmitted by the COMAC Group are really too outrageous: before this, the goal of the Army Aviation Force was only that the "aerial crane" copied by the COMAC Group was close to the original "aerial crane" in various data, and now it has surpassed it in an all-round way?

As for the second reason, it is to do preliminary technical training and master the use of this aircraft as soon as possible - although the "aerial crane" of the commercial aviation version uses the fuselage structure of the "aerial crane" of the Sikorsky version, after all, it is already the new century for COMAC to launch this project, and various new materials and technologies are emerging in an endless stream, and COMAC will not use new materials and new technologies to use previous materials and technologies.

The arrival of the army aviation troops did not surprise Wang Dazhi, but the arrival of the people from the power system was solid and beyond Wang Dazhi's expectations.

"Mr. Niu of the Electric Power Corporation is going to visit our company?" The secretary reported this matter, which made Wang Dazhi a little strange: "We don't have anything to do with the Electric Power Corporation, right?"

"Boss, Mr. Niu, they are also here for our 'aerial crane'," the secretary introduced to Wang Dazhi with a smile, with a look of honor: "You may not know very well, the power company has borrowed the 'aerial crane' from the road aviation army many times before, and they found that this thing is too easy to use when installing power towers, especially in the mountainous areas with inconvenient transportation, this thing is simply an artifact!"

But you also know that our country used to have only a few 'aerial cranes', and the leaders of the army aviation unit looked at those 'aerial cranes' like eyeballs, and every time the power company begged grandpa to tell grandma, they may not be able to borrow it, and now I heard that we are copying this plane, you say, can they bear it?"

Also, if you have it, who wants to bow your head and be a grandson for others?

Thinking about this, Wang Dazhi was also happy: "Let's do it...... How many do you think the power company can buy?"

The secretary said with confidence: "I don't dare to say more, I don't think the three planes are definitely a big problem." ”

"Oh, why do you say that?" Wang Dazhi was a little strange.

"The important thing is that our country has been engaged in power construction over the years, and our 'aerial crane' can greatly improve their work efficiency," the secretary really thought about this problem seriously, and when he heard this, he immediately replied: "As for why there are three, let's not talk about the northeasternmost side, the traffic is quite convenient, and this thing is basically not needed...... Of course, it's okay to insist on using it, but it is estimated that the power company may not be able to allocate it to them...... But on the southwest and southeast sides, at least one plane, right? If the conditions are sufficient, it will definitely be one in the southeast and one in the southwest. ”

Wang Dazhi nodded, this is right, whether it is the southeast region or the southwest region, the traffic is not so convenient, and the assistance of a "sky crane" will be of great help to their entire project progress.

Seeing Xiang Dazhi nodded, the secretary continued: "Central China must also have one, right? Although the traffic in Central China is okay, but the capital is in Central China, the power corporation has not made a show to the leaders: Leader, you see, our power construction is also very important to practical and advanced technology to improve efficiency. ”

"Hahaha......" Wang Dazhi laughed when he heard it: "What about another one?"

"There is another one in the northwest," the secretary said, "The traffic in the northwest is also enough, and it is much more convenient to have one." ”

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