Taking the heat-proof coating on the gas turbine of an aircraft engine as an example, the heat-proof coating used in the return spacecraft can be selected as a volatile material when heat-affected, and it only needs to take effect in a short time. As long as the performance is reliable and life is satisfied for a certain number of minutes, it will be considered as meeting the standard.

而航空飞行器却不可能这么干,两者之间产品的寿命一个以分钟计算,另一个却是以年来计算,压根就是两条不同的科技线.

Especially the heat-proof coating used on the blades of aero engines is basically used to insulating and protect the power turbines in the combustion chamber from high temperature gas shocks. In addition to excellent heat-proof performance, the coating also needs to consider the physical tension caused by the huge centrifugal force generated by the power turbine at extremely high revolutions. The toughness of the coating material is an indispensable part.

在九十年代初期,国际下一代航空发动机燃烧室的工作温度都在一千两百度以上,而同期最先进的单晶合金的耐热温度也不会超过一千零五十度.

The pitfall is here. Since the single crystal turbine blades of the aircraft engine and the heat-proof coating on the attached blades cannot be the same material, then when facing temperature differences of more than 1,000 degrees Celsius, the different amounts of expansion and contraction caused by thermal expansion and contraction of different materials will become a very headache-inducing engineering problem.

In practical applications, once the surface of the blade heat-proof coating falls off or cracks occur, the single-crystal alloy blades will be subjected to a temperature exceeding the ultimate tolerance, and the mechanical properties will inevitably drop greatly. Accidents that are extremely fatal to the aircraft engine, such as blade fracture, will occur as scheduled.

“美国人可没抱什么好心思,由于热胀冷缩问题的存在,相应的单晶合金必须和相应的防热涂层配合.”李远玲的神情满是嘲讽.

"When developing single-crystal turbine blades, we must start to consider the problem of shrinkage between the heat-proof coating and the blade substrate. By fine-tuning the ratio of a certain material in a single-crystal alloy or heat-proof coating, the thermal expansion coefficients of the two must be consistent as much as possible."

"The precision involved in fine-tuning of this kind of element is basically about ten parts per million. In other words, the control accuracy of each element in a single crystal alloy must reach six digits after the decimal point. If it cannot be done in industry, it means that even if you get the single crystal alloy formula, it will be of no use."

一个小时之后.被塞了满脑子单晶合金,防热涂层信息的梁远都要听傻了,百万分之十岂不就是小数点后的六位数

Liang Yuan suddenly remembered the gold jewelry that the Chinese people loved. Liang Yuan vaguely remembered that the merchants who first sold gold jewelry boasted that the purity of their products was four nines after the decimal point, and only began to boast about six nines after the decimal point after the new century.

问题在于单一金属的提纯和控制复杂合金组成元素的特定比例这两者之间的难度相当于风筝和航天飞机之间的区别.

更坑的是八十年代的共和国单一金属提纯能不能搞到小数点之后六个九都在两可之间.

No wonder later generations have roughly all the formulas of single crystal alloys. A random search will reveal a lot of information. Even if the formula is clearly told to you. If you don’t tell you the specific process and do not provide relevant equipment, it is destined to be useless.

"This is simply too complicated. Mom, can I think so? As long as we separate the heat-proof coating technology from the first generation of single crystal technology it masters, we can only use one of them and basically obtain a nearly abandoned technology." Liang Yuantou asked in a huge way.

Li Yuanling nodded and said, "The heat-proof coatings of the three single crystal alloys produced and developed by the three mainstream engine factories in the world are specially made. In addition to the heat-proof coatings initially equipped during the development of single crystals, even if the latest single crystal alloys are equipped with the best heat-proof coatings of Rolls, it is absolutely impossible to develop first-class turbine blades."

"Even to be sarcastic. Even if G provides us with the formula of single crystal alloy and the ratio of heat-proof coating, we only embargo on the equipment, the problems we face are still very huge." Li Yuanling's expression was a little helpless.

The so-called backwardness of basic industries cannot be expressed in the literal six words. This backwardness means that every step of taking is facing countless problems.

如果算上共和国当年引进斯贝航空发动机的代价,截至目前,远嘉在航空发动机极其相关领域至少砸进去超过三十亿的人民币,看到了什么

There is no international top-level blade air film cooling technology, no blade heat-proof coating technology, no single crystal alloy technology, and no overall turbine disk technology. Even without Rolls-Royce's equipment and technology support, the gems on the group's product line and the tide of the qitine gas turbine can run smoothly and continue to produce.

此时的华晨动力,只是具备一点点改装能力的大型航发组装维修厂而已,就算这种组装厂还得靠李远玲这种才华横溢的总师才能顺利建成投产.

这坑可真t的大,可比全球首富啥的刺激多了,梁远苦中作乐的想着.

当然.这个年代选择跳航发大坑的高冷土豪绝不是梁远一个,比如目前试图进入c100客机航发采购目录v2500航空发动机的某些幕后股东们.

Before Liang Yuan, the awesome Japanese attracted the first product of the international aero engine company, the v2500 wide-string turbofan engine, which was jointly established by the five companies of Rolls, Puhui, Tu and Fiat, and jointly established, to win over the first product of the international aero engine company.

However, Liang Yuan knew that this seemingly ambitious international joint project was extremely funny. The cunning Italian chose to escape shortly after the company was established. Only the wealthy West German Tu and Japanese consortium continued to go with Rolls and Rolls, and Puhui was in the same pit and mixed.

The v2500 project belongs to Japan and West Germany to pay for money, Rolls and Rolls and Pratt & Whitney, and then four multinational joint companies with equal shares, which look fair and beautiful. West Germany and Japan both hope to gain experience in manufacturing first-class aircraft engines through this international cooperation.

Of course, if the three major international aviation powers can become four, it will be more in line with the aesthetics of the Japanese and West Germans.

Unfortunately, wishes are wishes after all. Ronaldo and Puhui are holding the R&D funds of Japan and the Germans. One has verified its own brand new fan concept and the other has verified its own new combustion chamber. Then the two companies have handed over the new technology on the Ruida series and the p4000 series.

Twenty years later, Japan's Ishikawashima Kaoro Heavy Industry, which has rich experience in international cooperation, can produce world-class power turbines, and Germany's power turbine production capacity is also the top international standard, but these two companies cannot design even a small thrust aircraft engine.

As for the fate of the V2500 engine, it can be said that it has been beaten by G's CF series since its birth. In fact, if Puhui and Luo Luo really join forces, even if they don't crush Ge, it will be fine. The embarrassing performance of V2500 can only prove that these two giants are maliciously paddling.

发觉梁远情绪不高,李远玲安慰说道:“其实事情还不算糟糕,小远应该知道引进设备总比引进技术容易许多.”

梁远点了点头,问道:“我还是不懂妈妈和吴老选择耐热涂层技术和加力段金属热处理技术的用意.”

"In the field of aviation engines, there is actually not much difference between choosing a single crystal alloy or heat-resistant coating. The reason why the teacher chose a heat-resistant coating is actually very related to the Su Gong who is a Hong Kong-based power collector." Li Yuanling said with a smile.

"It has something to do with Lao Su and the others." Liang Yuan was stunned.

One is an aero engine under the engineering thermal physics category, and the other is a large-scale integrated circuit under microelectronics technology. Apart from the supercomputer in research and development, Liang Yuan thought for a long time but couldn't figure out what kind of technology could be a general relationship between the two.

接连胡说了七,八种听起来很跩很高端的技术都被李远玲笑着否决,最后梁远终于放弃了猜测,眼巴巴的看着李远玲等着自己老娘揭开谜底.未完待续

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Chapter completed!