Chapter 1340 Burning


    "Wait a bit ..."


    In the face of such a dramatic situation, it was Lin Chenggang himself:


    "Academician Chang, let me slowly ..."


    Compared to Shen Fangzhong, who was born in rocket dynamics and Li Jianqiang, from the air command, as a technician who specializes in research on rocket power and solid fuel, he is in a superposition state of theoretical chemistry "a little bit of understanding, but not fully understand".


    It is precisely this state that he cannot ignore all intermediate links just as pure laymans, and he can''t quickly and fully understand the calculation process displayed on the computer.


    After all, it also involves quite complicated mathematics and physics knowledge, which is indeed slightly complicated for a traditional engineer.


    As a result, before he completely digested the part of the problem, he heard that Chang Haonan said that three new tricks were reorganized on the basis of his system.


    Even if the heart is broken, even if it is very powerful.


    Fortunately, Chang Haonan also knew that his progress might be a bit fast, so after hearing Lin Chenggang''s stop, he waited patiently for a while.


    However, there are things, not just not.


    If I didn''t understand it at the beginning, it would be difficult to think about it in a short time.


    So a few minutes later, Lin Chenggang''s tight frown not only did not stretch, but twisted deeper.


    Seeing this is not a way to drag like this. Chang Haonan had to re -open, interrupting the other party''s thinking:


    "If you don''t understand what you don''t understand, you can also ask me directly ..."


    Hearing this sentence, Lin Chenggang''s face flashed a tangle.


    Obviously, it is obviously a system that I have made, but no one else understands it. This is a great blow for a technician.


    But it is not the first time, so he almost made himself out of his instant.


    "After all, it is Academician, there is no shame ..."


    After meditation twice in his heart, he nodded as a calm place:


    "When I designed the pushing agent architecture, I considered the thermality and hydrolysis of polyethylene glycol, and not only conducted a separate component test under the laboratory conditions, and also processed the pillar of the pyramid for the full process of combustion simulation, but at that time I didn''t find similar problems ... "


    The results of the real bomb test are here, and the calculations of Chang Haonan can also be confronted. Lin Chenggang must have understood that he was wrong.


    But the specific mistake made him unable to think about it for a while.


    Due to its special constituent, even different batches of products with the same brand number sometimes show certain performance fluctuations, but at most, there is a few percentage gap at the numerical level. It is impossible to fluctuate. The opposite feature is right.


    "Because this belongs to a type of individual differences is very obvious ..."


    Chang Haonan replied:


    "Don''t say that it is a laboratory simulation. Even if it is the previous test, don''t there be no problem in the 12 rounds of the 12 rounds?"


    He said to turn back the calculation process back to the previous page, and then explained:


    "Under normal circumstances, even if you work in the most slow -burning way, the burning time of the solid propellant will not exceed 5 minutes ... Don''t say 5 minutes, even 50 minutes will not allow the water elimination response to spread to the entire medicine to the entire medicine. The pillar is at most to have a bad impact on performance, and it is basically negligible according to the proportion. "


    "That…"


    This time, Lin Chenggang''s eyes were a little stunned.


    "Therefore, the key to polyvinol degradation at high temperature is actually not water."


    Chang Haonan finally revealed the answer:


    “水消除后的主要产物是烯烃，在聚合物残余结构中形成碳碳双键，并沿着聚合物链迁移到下一个相邻的羟基，继而发生酮-烯醇的异构化反应，而For some polyvinyl alcohol with a low degree of alcohol, a large amount of acetate groups will be retained in the molecular chain structure, causing a large amount of gaseous acetic acid to produce the decomposition process, and inducing the violent telescopic and vibration of the hydroxyl group ... "


    "..."


    After turning mathematical languages ??into chemical language, Lin Chenggang finally thought.


    "It turns out ..." However, no matter mathematics or chemistry, it is no different for the other two people listening to it.


    They finally waited until the end of this part, and Shen Fangzhong quickly cut into the topic to prevent Lin Chenggang from continuing again:


    "Academician, I don''t understand chemistry ... but from the perspective of combustion dynamics, since the workflow can be completely controlled, can it be used to abandon the traditional core combustion mode and directly use end -surface combustion?"


    "In this way, you can make the section of the medicine into porous honeycomb -shaped, or simply it is solid ... or even if the hollow -up is unchanged, the end surface combustion can also increase the overall intensity of the pillar in the work process and reduce the hidden dangers of failure. "


    In order to ensure the uniformity of burning, the traditional solid propeller is made into a cylindrical type. After igniting from the top of the pillar hole, it is burned from the inside to the outer layer.


    The problem brought by this is that the entire pillar of the medicine will become thinner and thinner, and the intensity will become worse and worse.


    In the past, the solid propeller was a way to buy and sell a hammer. After the outbreak, it soon ended. The impact of this combustion method may not be great.


    However, the combustion of the electronic control agent runs through almost the entire flight. Even if the initial intensity of the pillar is improved, it is easy to cause problems due to huge horizontal overload at the middle and end.


    The end -faced burning is that the pillars are burned from the bottom to top, and the more capable of being overloaded, there will be no concerns in this area.


    Chang Haonan is only interested in the promotion agent system developed by Lin Chenggang, so he came to see the situation before entering the key stage of the research and development. Immediately answered, just bowed his head and thought for a moment.


    "There is no problem with the burning of the end face. A big deal is to set up a swelling chamber between the medicine and the nozzle. The key is to ignite ..."


    There is no mistake, one, one, one, one, one, one, one, one 619, one book, one, one, one, one, one, one, a book!


    He said he looked at Lin Chenggang, who was taking out a book of his book.


    As the designer of the CTK series pushing agent, the other party must consider this problem.


    At this time, the latter also took the note, raised his head and answered:


    "Unlike conventional pushing agents, the ignition dependent electrode and the pillar of the electrical control agent and the pillar of the electrical control agent are required to ignite multiple times. touch…"


    "In this case, the core electrode is obviously the most intuitive way. The external electrode can be directly fused with the rocket shell, and the inner electrode can directly replace the position of the original ignition. There are problems.


    Perhaps he felt that simple orally was a bit abstract, so he touched a few times left and right, and then pulled over the whiteboard from the other end of the computer room.


    "I also consider the design of the ring-end electrode, and the two electrodes are fixed ... This can mainly concentrate the heat of the electric energy thermal effect in the burning end area, effectively reducing the melting phenomenon of the pillar, and the structure is relatively simple. The problem is that the medicine is the medicine. The problem is the medicine. The contact performance between the column and the ring electrode is unreliable. If the agent cooperation is adopted, there will be problems with the pillar movement ... "


    "..."


    For a while, several people fell into silence around the whiteboard.


    "Perhaps ... what about using a common electrode?"


    In this regard, Chang Haonan has not specially studied, so it is not very sure:


    "Two exactly the same electrodes are arranged on the same surface. Through the air pressure or hydraulic pressure, the pillar is moved down with the combustion. Burn the agent, and at the same time, it can overcome the defects of overall hot melting under the action of current thermal effects ... "


    He took the Mark pen and modified it on Lin Chenggang''s picture.


    Designing such things is sometimes like this.


    The essence may not be complicated, but if the inspiration is not in place, it may be stuck for a long time.


    Therefore, Lin Chenggang knew almost seconds:


    "And this is easier to set mesh -shaped electrodes to ensure that it will not receive much additional resistance during the gas emissions ..."


    Seeing his own thinking is feasible, Chang Haonan threw the Mark pen aside and continued:


    "The only problem is that the electrode and the pillar of the drug column need to be continuously connected through the external balance of the mobile pillar. The external balance force of the mobile pillar should be able to change with the load. It may be difficult for the solid propeller to adapt to matching. "


    "This is not a problem. I have enough burning speed-voltage matching data. It is easy to develop a new control logic ..."


    (This chapter is finished)