Single crystal alloy is a legendary thing for Liang Yuan in the previous plane. Strictly speaking, more than 90% of ordinary military fans will not recognize what the single crystal alloy is for even if they are thrown in front of them.

“Single digit success rate???”

Liang Yuan's voice was full of incredible. In other words, it must be less than 10%. The actual product yield rate is too unbearable to witness it, so my mother used the single digits to say that it was very tactful.

"This is comparable to the yield rate of the c2 chip when Lao Su and his team just repaired the first week of the wafer production line," Liang Yuan sighed with a smacking his lips.

“What about the mature American technology?”

"The yield rate of Puhui single crystal alloys is currently unknown, but the yield rate of Rolls-Royce and General Motors' first-generation single crystal alloys is above 50%, and the second-generation technology will not be less than 70%.

"Ah, there is so much difference, why don't you change the production process of single crystal alloy?" Liang Yuan said a little regretfully.

Because single crystal alloys are extremely closely related to the military industry, even in the era when the Internet was popular, there was very little information related to them on the public network. Of course, even if there are, it is definitely no more common to military fans than wild giant pandas.

Liang Yuan just vaguely remembers that the Republic of the last plane did not increase the yield rate of single crystal alloys to more than 20% for a long time until the new century.

"Mom and teacher also thought about it for a long time, and finally chose the blade heat-proof coating and the metal surface treatment process of the engine afterburning section."

"Our launch vehicle technology and return satellite technology are not bad, and the heat-proof coating technology should be good, right?"

Thinking about the single crystal alloy yield problem that had been spent 30 years on the previous plane, Liang Yuan continued to ask questions without giving up.

Li Yuanling looked at Liang Yuan staring at her, a little funny, proud and sad. Li Yuanling has always believed that Liang Yuan had great enthusiasm for the aerospace field at this age, and it must be because of her own words and deeds.

Otherwise, with Liang Yuan’s current business talent, the success you can achieve in any industry is much simpler than now. In Li Yuanling’s opinion, there are many successors, and the family background is nothing more than that.

He pinched Liang Yuan's cheek intimately, and Li Yuanling smiled and said, "If this problem is explained thoroughly, it would be impossible without half a year."

"But before your dad comes, I can just talk to you."

After Comrade Lao Liang was promoted to the director of the branch, his mount made great progress due to being in the railway field. A two-axle rail official car produced in the 1950s became Comrade Lao Liang's new mount.

The 150-horsepower diesel engine drives a single car with less than 20 tons, with an average axle weight of less than 10 tons. This thing was definitely one of the fastest vehicles on the road in the Ministry of Railways of the Republic in the 1980s.

According to the statement just conveyed by the two girls, Comrade Lao Liang planned to get off work a little early and depart from Dandong Station at 4 pm to arrive at Shengjing South Station at most at 8 pm, which would not delay the family's reunion.

Of course, the current traffic volume of Shengdan Railway is still quite busy. At this time, the Republic still provides a lot of economic assistance to North Korea. Freight trains passing through the Yalu River Port are endless. Comrade Lao Liang was hesitating whether to come over. If he was rushing to have supper in Shengjing, the trucks in the branch driving map would definitely have to make temporary changes. Some special trains to North Korea might be delayed.

However, the two girls knew from their usual conversation that Liang Yuan had no good impression of that friendly neighbor like a brother, so they tried their best to instigate Uncle Liang to "use his power for personal gain", and even swore that Liang Yuan might run back to Europe in a few days.

Considering that the tank is related to himself, Comrade Lao Liang finally agreed to come before dinner. If he missed this time, judging by Liang Yuan's whereabouts in the first half of the year, it is very likely that someone would go abroad.

After all, even if the matters under the plan of Comrade Lao Liang are not far apart, it will be almost the same as Yuanjia. If you don’t explain it clearly to Liang Yuan and don’t nod after Liang Yuan’s endorsement, you will definitely get half the result with twice the effort if you can’t use the power of Yuanjia.

When he found that Li Yuanling was telling you a long story, Ning Wanjia happily took a plastic stool from outside, put it on the side of the reception sofa, and drove Liang Yuan to the stool to stay. In someone's grievance gaze, he occupied the entire sofa with Ning Wanfei.

Li Yuanling looked at the shy Ning Wanjia with amusement. Although she did not agree to Liang Yuan's request to squeeze the sofa together, she put her little hand on the armrest of the sofa and allowed Liang Yuan to grab it.

Thinking that Ning Wanjia liked to be with Liang Yuan very much when she was a child, she often stared at her black eyes when facing adults' jokes, nodded with innocent faces and said something like "I am Xiaoyuan's little wife". Li Yuanling felt that the relationship between the two of them was becoming more and more interesting.

Of course, there is something even more interesting in Li Yuanling's memory. At that time, someone squeezed the wrong person and admitted his wife, he would first face a beating, and then a huge tragedy of snacks or bottles being stolen.

"Actually, this matter has to start with our policy when the founding of the People's Republic of China..." Li Yuanling looked like she was trapped in memories.

After the establishment of the Republic, it can be said that everything is in destruction. The only thing that matches the devastated land is a weak economic capacity and a large number of illiterate groups.

Although the 400 million compatriots sounded very powerful, most of them could only be pulled out to see the bottom level of the venue. The big boss-level elites who can play charity and barristers are simply as rare as morning stars in the huge population base.

Needless to say, high-end and sophisticated aerospace, even the industrial workers needed for heavy industries such as steelmaking machinery are still not what the newborn republic with hundreds of millions of rural labor can provide.

Even if you have funds and skills, what can no one do? Nothing can be done.

Therefore, giving up certain industries became an inevitable choice. After several large-scale meetings involving nearly all academicians of the Chinese Academy of Sciences in the 1950s, seizing aerospace and launching aviation became the republic’s unsuccessful choice.

Although aerospace and aviation are both top manifestations of human technology, there are huge differences in the specific technical issues between the two.

The physical environment faced by spacecraft may be much worse than that of aerial vehicles, but many spacecraft do not work as long as the aircraft. The environment faced by satellites and other equipment that have long working hours is almost constant vacuum, and there is almost no need to consider the dynamic mechanics of the product except for cosmic radiation and low temperatures.

This means that spacecraft can use many extreme materials with one-sided high performance, but aviation vehicles cannot do this. (To be continued.)

ps: There is another chapter tonight

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Chapter completed!