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Chapter 289 War of words in all directions

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    The bickering between the two was clearly heard by Guan Fei on the podium.  He had no intention of correcting a technician's opinion. As the saying goes, facts speak louder than words.  To win the respect of the other party, you need to show the ability to convince the other party, and the ability is not based on bragging, but on doing.  He picked up the microphone, briefly thanked several units for their enthusiastic assistance, and then said: "Everyone here is an expert in the military industry. Our base area does not have a talent reserve in this area, so this time we have mobilized a group of outstanding people.  Technical staff are here to assist. They used to be engaged in the research of civil technology, so we ask all experts to pay more attention. In addition, we have recruited a new group of mechanical design, flight power engineering, thermal energy and power, materials engineering, as well as materials physics and applied chemistry.  , college students who have just graduated from the measurement and control major. Although they have received strict training and have certain laboratory work experience, they are still novices in military industry research. I hope that all the teachers here will also pay more attention to them and help them grow quickly. Here,  On behalf of the base, I would like to thank everyone in advance!¡± After saying that, he stood up and gave a standard military salute!  The technical staff present were a little unaccustomed to being saluted in public by the top person in charge of the dignified base area. Some people quickly stood up to salute, some said it was appropriate, and others started to applaud out of habit, and the venue suddenly became chaotic.  The leaders of several units who were also on the rostrum responded quickly. They turned on the microphone and were polite. They all said that this was their obligation and they would do their best to help the collaborative researchers dispatched from the base area to improve. However, if they had any questions, they would definitely  Tell everything you know, and tell everything you know.  When the venue returned to silence, Guan Fei continued: "Then let me briefly introduce the situation of this research mission: This research is based on the reverse survey drawing of a set of advanced trainer aircraft. The drawings contain precise measurement data.  It includes the overall dimensions and performance parameters of the aircraft. Based on this set of reverse survey drawings, we must thoroughly digest it and redraw a design drawing that meets the requirements, and based on this, come up with a complete set of design drawings.  Construction drawings, equipment drawings, tooling drawings, prototypes are produced, and after ground and air testing, they are finally finalized. At the same time, it is used as a platform to transform it into a light fighter/attack aircraft.  The task requires completion within three to four years." As soon as he said this, there was an uproar below.  Three to four years? ?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? After all, when you do your own research, all the ideas will be coherent and clear, and the derivation process will mostly have various additional materials and formulas for reference.  But surveying and drawings are completely someone else's thing. Just understanding why the other party wants to design and design the way they do is enough for everyone, and the progress can't be made faster.  This is the case with the MiG-21. The Soviets provided a complete set of drawings and production lines, and also sent experts to teach them step by step.  As a result, everyone initially only learned how to use this production line to manufacture step by step, without understanding the principles at all.  It took Chinese aviation people twenty or thirty years to fully understand this technology. Although they have developed a number of improved models on the standard version, they have fully mastered all aspects and can be independent from the original version.  Researched?  Not necessarily!  Just like the J-8 and J-9 developed in China, they are two enlarged versions of the J-7.     what's the result?  Since the J-8 uses a scroll jet engine, it was first successfully tested in the late 1960s, but it has not yet reached a complete state and is still being improved bit by bit.  The J-9, which was hampered by the engine, is even more miserable. So far, it has only completed one ground verification aircraft, and it was canceled before the test flight was completed.  This is based on the J-7 that everyone is most familiar with, and it has been done so badly. Now that the base area has produced an unknown survey map, it will take three to four years to complete its design drawings, construction drawings, prototypes, and even more  Finalize, how is this possible!  Not only the researchers, technicians, and workers sitting below, but also several heads of units on the stage were also surprised.  They thought this research had no time limit and could take as long as it took. Who knew it would take three to four years to produce a finalized product.  "It's too difficult." Guan Fei turned a blind eye to the expressions of everyone on and off the stage, and continued: "I know everyone thinks it's a bit difficult, but I don't think it's actually that difficult." It's weird if it's not!  If you have the ability, it will take you three or four years to build a J-8 or J-9 and give it a try. You can sit and talk without back pain!  The technicians attending the meeting looked a little embarrassed. Although they did not express any objection, no one agreed with it. They all had dark faces and remained silent.  Guan Fei smiled: "The reason why I dare to say this is because this is a mature design.??It is not a semi-finished product that needs to be started from scratch.  What we have to do is to first use this survey drawing and use the existing aerodynamic formulas, combustion formulas, inlet calculation formulas, trim formulas and a series of formulas used in aviation design to deduce the design of each component.  Parameters, indicate the strength requirements of each component, then look up the material manual, deduce the materials used in them, and draw a complete design drawing.  Although this workload is tedious and huge, it is not complicated. Even college students who have not graduated can do it. I think everyone here will not feel intimidated, right?  " At the end of the sentence, he stimulated everyone with his provocative approach. "I wanted to embarrass him, but he turned an army against me. When he asked the question, a researcher rolled his eyes, stood up and said:  "Commander Guan, reversely deduce the performance indicators of the parts based on the survey drawings, and then check the material manual to select suitable materials. Although this is very troublesome, it can be achieved.  However, you have forgotten that in order to achieve the design performance of the aircraft, the weight of each component must also meet the requirements. You only have a survey drawing, how do we measure it?  "    "calculate!  Although there are no construction drawings, we can calculate the weight of each component!  Guan Fei replied without thinking, "From the aircraft's indicators, we can know the empty weight of the aircraft in reverse. From the empty weight, the weight distribution of the trim, and the performance requirements of each component, you can check the manual.  Determine what materials it will be made of to meet the requirements.  Once the material is determined, the weight is also determined.  I know that this work is very tedious and requires a lot of calculations, but as long as there are many people, it is not difficult to do it.  " Listening to what he said so clearly, the technicians here looked at each other. Obviously, this commander is knowledgeable and not a layman. "But there are some materials that others have but we don't, so this derivation may not be correct, or it may be deduced.  It may not be possible, so what¡¯s the point of such a derivation?  "Some people were dissatisfied and stood up and continued to retort. "Of course I know this.  I didn¡¯t say that it must be restored 100% according to the sample!  Guan Fei stood up to the rostrum and talked eloquently.  As long as the performance meets the standards, we don't insist on it.  You can use titanium alloys, special alloys, or composite materials. As long as its performance can meet the requirements, we have no restrictions. There is no need to be absolutely consistent with the sample.  " "In that case, the performance cannot be guaranteed!  " Feeling that they had caught the loophole in his words, several technicians rushed to say. "You use directional solidification technology, which is of course not as good as single crystal technology. This is why turbofan six has not been practical for a long time. The technology cannot reach it.  , the materials are not as good as others.  It can take a thousand hours for other people's combustion vents to be overhauled, but we can't even guarantee a hundred hours.  Guan Fei did not avoid the question, but answered directly, "But just because the technology is not available in China, it doesn't mean we don't have it!"  We also have this single crystal technology, and we can also provide some high-performance materials. "Boom!" He couldn't continue talking, because the audience was already in a mess, and it wasn't just the audience, but also the audience.  There was also an uproar on the floor, including Minister Luo and others, with their mouths wide open and dumbfounded expressions. Deputy Minister Luo, no longer caring about the rules of the venue, grabbed the microphone in front of him, turned on the switch, and asked: "Comrade Guan Fei,  Do you have single crystal manufacturing technology?  I didn't hear you mention it during the last meeting.  ¡± Turbofan 6 has a short lifespan, and the problem is that the quality of the blades is not up to standard. General Motors, HP, and Rolls-Royce, which have the strongest foreign technical capabilities, use single-crystal blade technology, and their lifespan has suddenly soared to the top  Thousands of hours. But if it is not available in China, it can only be replaced by poor directional solidification technology. As a result, the short lifespan has become a fatal weakness. Although the motor is built, it is too heavy and must be replaced after running for twenty or thirty hours.  , completely losing its practical value. Guan Fei turned sideways and spread his hands towards him: "Although we have single crystal preparation technology, we don't have a 10,000-ton hydraulic press, and we can't make single crystal propeller castings, so we didn't have it last time.  explain.  However, when this joint research is successfully completed, I think all the technologies that should be mastered can also be learned in China.  And after actual use, your impression will be more profound, right?  " Minister Luo was speechless. He finally saw that the technology in Guan Fei's hands was not just a single crystal, but there must be many more. If the prediction was correct, he would take out the phased array radar components for fishing, etc.  Most of the technologies that must be used in the manufacturing of various weapons and equipment are prepared for him. Judging from the fact that he has mastered these technologies and asked for joint research in the country, it seems that he lacks manufacturing capabilities and has to rely on another domestic company.  aspect, it should be said that Guan Fei is still very patriotic, so he took the initiative to invite people from China to study with them.  Thinking of this, he felt a burst of ecstasy in his heart.  Whether it¡¯s an airplane or a missile, to be honest, after the initial excitement, he didn¡¯t have high expectations for the results of the joint research.  Because of the weak domestic technical foundation and lack of experience, the shortcomings in the materials discipline are even more fatal.  In his opinion, through joint research, we can understand each other's research ideas and track each other's technological progress, and accumulate valuable experience for future domestic military research. At the same time, we can understand the detailed performance of various US most advanced weapons and find out their weaknesses.  Carrying out targeted training in the future will be the biggest gain from this joint research.  But judging from what Guan Fei said just now, the base area is completely prepared and extremely well prepared.  Although they dare not say that they have sufficient reserves for all technologies, I am afraid that there will be no shortage of some key technologies. Otherwise, how dare they dare to say that they will be finalized and mass-produced in three to four years?     good!     great!  The more you dare to speak out, the more technology you have at hand, the greater the domestic harvest will be!  ¡°If we can really learn and understand all these technologies through this joint research, the promotion effect on the domestic military industry will be more than just a step up.  As the original advocate of this plan, can I also do it? Minister Luo looked at Guan Fei, who was still answering the technicians' questions calmly, his lips were slightly raised, and his eyes were narrowed into slits with a smile.  For the latest book update address, please click Yunlai.ge to get the latest chapters of this book. For mobile phone users, please visit http://m.piaotia.net
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