Of course, if possible, even large aircraft use electricity as energy and motors as engines. Unfortunately, with their Tiangong technology, they do not have the ability to replace turbojet and large bypass ratio turbofan engines for the time being.


    Therefore, in terms of turbofan engine, Wang Bin and their Tiangong technology must be developed. It is precisely because of this that they will focus on the research and development of turbofan engine with large bypass ratio.


    Although the core engine of this turbofan engine is the same as the core engine of the previous tg001 turbojet engine, which can greatly shorten the R & D cycle, take Wang Bin''s turbofan engine in front of him. The time of its drawing design was only a few months. Professor Zhang gave this design drawing to Wang Bin.


    However, Wang Bin doesn''t pay little attention to this engine because the core engine is the core engine of the previous engine. On the contrary, he attaches great importance to this engine as the first large bypass ratio fan engine of Tiangong technology. Otherwise, he won''t check this engine in person.


    Of course, if it was in the past, he would never be able to understand the drawings of this engine with his ability. However, since he last purchased rocket engine technology from the system, he found that even in rocket engine technology, there are many technologies that have a certain connection with aeroengines, so in these knowledge, there are some technologies of aeroengines, With this knowledge, Wang Bin can understand the drawing and even know the purpose of most parts in the drawing.


    However, when Wang Bin looked at the drawing, his phone rang. As soon as the phone was connected, a familiar and strange voice came out of the phone.


    "Mr. Wang! Hello, I''m Du Haili from Kunlun aircraft manufacturing company."


    "Hello, Mr. Du! I wonder if you have made up your mind to use electricity as the power of your Kunlun company''s helicopter?" when Wang Bin heard that Mr. Du of Kunlun company called, Wang Bin already had a certain number in his heart. It must be Kunlun company that is ready to develop and use electricity as the power of the helicopter, otherwise, Duhailey won''t call specially.


    "Yes, I''m going to try. After all, with the current situation of our engine, we can''t go to heaven. After the crash during the last test flight, even if it''s a test flight, we don''t dare to test fly if we don''t solve the problem of the engine.


    However, I think you know the character of large foreign companies. Even if I buy another engine, they may not be able to give me a qualified engine. Moreover, if another engine is replaced, the performance and safety of the helicopter will be greatly reduced.


    So in that case, I will simply stop using the engines of large foreign companies and directly prepare to try electricity as power in case of success!


    If we can, our company will not be restrained by foreign companies in the future.


    This time I called to confirm with President Wang whether your company is really capable of solving the battery problem? "President Du said on the phone.


    "That''s good! Since President Du is really going to use electricity as the power and energy of your company''s helicopter, I won''t hide it.


    Our company does have high-performance batteries. The energy density of batteries is not comparable to that of batteries on the market, and there is more than one.


    The energy density ratio of the first battery is about 100 kW / kg, that is, each battery of about 1 kg can store 100 kW of power.


    However, this battery also has its own defects, that is, there are great restrictions on the output power and output voltage of this battery. The maximum output power is only 100 kW, and the maximum output voltage can not exceed 300 v.


    Although the energy density of the second battery is almost the same as that of the first one, which is 100 kW per kg, the weight of the second battery can reach about 5 kg, that is, the maximum storage capacity of each battery can reach 500 kW.


    At the same time, the output power and voltage are also higher, up to 500 kilowatts and 500 volts.


    Most importantly, although this battery can not supply power in series like the first battery, it works in parallel.


    Unfortunately, the second battery is a product that cannot be easily sold. If President Du really needs to buy it, he must first get a license, "Wang Bin said.


    After listening to Wang Bin''s words, Du Haili at the other end of the phone was relieved. After all, not to mention the second battery, even the first battery is enough for the helicopter developed by their company. After all, this is a 100 kilowatt power storage! Even if the helicopter developed by their company consumes 10 million electricity, that is, one kilometer per kilowatt, it can definitely give their helicopter a range of 100 kilometers.


    So even the first battery is enough for their helicopter, not to mention the second battery. If they can really get the second battery, the endurance of the helicopter developed by their company can be increased to at least 500 kilometers, which is absolutely enough for a civil helicopter.


    As for the second battery, Du Haili is confident that the formalities required can be completed.


    So he immediately said to Wang Bin, "Mr. Wang! Your Tiangong technology has really developed high-performance batteries! That''s really great. With your two batteries, I think it''s not so easy for foreign enterprises to get stuck in the neck of our Kunlun company!" Du Haili said happily.


    Then he thought about the electric engine. After all, if you want a helicopter to fly, you can''t just solve the problem of energy. You have to solve the problem of engine.


    Now, since Tiangong technology has the ability to develop batteries with such excellent performance, it represents Tiangong technology. The technology in power and energy is definitely not simple, so he knows that Wang Bin''s Tiangong technology will definitely have high-performance motor technology.


    So he asked Wang Bin, "Mr. Wang, what about the electric engine technology? I wonder if your company has high-performance supporting electric engine technology?"


    After listening to Du Haili''s words, Wang Bin nodded directly, smiled and said: "Mr. Du, please rest assured! Our company also has the supporting electric engine technology. Even if you need an electric engine with a power of more than 500 kW, it is not difficult for Tiangong technology. It depends on Mr. Du, what kind of engine you want!"