The big era starts in 1983

Good news, bad news?
Catherine put down the gear in her hand.

Yan Qiansheng said to Catherine: "Miss Catherine, the bad news is that there is no raw material blank. What we need to use is a very special titanium-aluminum alloy, which is very expensive and the quantity is very small. The warehouse does not agree to give us even the smallest We have no way to apply for the factory to produce this alloy."

"The good news is that I found a fairly good alloy steel. Apart from being a bit heavier, the strength is quite good."

Catherine picked up a coat: "I'm going to find Dr. Yan."

"It's useless." Yan Qiansheng stopped: "Right now, as far as I know, there are higher strength and higher values ​​in the warehouse of the Sky Research Institute. But they can't give it to us. We mechanically research The academy and they have their own budgets."

Catherine thought for a while, and picked up the phone with the battery removed: "I'm looking for your factory manager."

"No, the factory manager never cares about this."

"I pay, and he pays for the materials." Catherine has money, and she believes that $100 million can be exchanged for enough raw materials.

Yan Qiansheng wanted to persuade, and after thinking for a while: "Miss Catherine, I personally think that it is meaningless to continue researching in this direction. We can only save fuel by 20.00% and increase power by 5.00%, but the cost is too high. , and this structure is very unstable, and it is prone to breakage under high-strength use."

"Don't listen, don't listen." Catherine was struggling.

"Is your head normal? You're just building a rally car. What kind of titanium-aluminum alloy is built? Is the steel bad?"

Luo Qianli passing by threw away half of Yan Qiansheng's drawings.

After half an hour.

In other words, capricious.

"Yes."

Luo Qianshi and Xiong Tianhuo looked at each other, and the two reacted in the same way.

After hanging up Bai Hao's phone, Yan Qiansheng went to the Sky Research Institute with a bundle of blueprints in his arms. Right now, only the Sky Research Institute has high-strength titanium-aluminum alloys.

After another 10 minutes, Xiong Tianhua, who was also passing by here, threw away 90.00% of Yan Qiansheng's remaining drawings.

"Then, I will talk about a contradiction. That is, in order to save fuel, a design with a large bypass ratio is usually used. The larger the bypass, the larger the diameter and the larger the size of the blades. However, the fan speed of the oversized fan cannot Too high, too fast is not only a matter of strength, but also causes shock waves and stalls. Do you understand this truth?"

Bai Hao replied in a very serious tone: "Well, I respect Jeff's choice. I also accepted your suggestion very sincerely. I think I need to seriously consider this matter. I agree in principle, but let me consider the specific arrangements. one time."

Yan Qiansheng was stunned.

Catherine threw the phone to Yan Qiansheng.

At this time, Xiong Tianhua picked up Yan Qiansheng's drawing: "90.00% of the gear box diagram you drew is useless. The only interesting design is to add a set of deceleration between the compressor and the fan. Device, this idea is very genius, if this theory can really succeed, then it is possible to have both fish and bear's paw."

Luo Qianshi was about to continue drawing, but when he turned around, Xiong Tianhuo had already drawn a new picture.

"Don't think so much, just treat it as playing with your friends. You take the blueprints, and I'll give you special approval for some raw materials. Sometimes it's okay to be a little messy." Bai Hao's subtext is that Catherine spends her time on things like this. , It is better than other nonsense, at least this loss is still controllable.

Luo Qianshi said, "Xiaoyan, you are studying mechanics. Let me tell you some basic knowledge."

Yan Qiansheng understood it, understood it completely, and quickly explained: "I don't know what turbojet is. I designed a new gearbox for the car, just to provide instant explosive power when off-road, and then return to normal. When driving, it can also maintain fuel economy and a higher limit speed."

"Bai, Gwen Rhys wants to find a job with you. Although I feel that Jeff's head is abnormal, I still respect his idea. But I also want to remind you that Gwen Rhys is a very dangerous person."

Sure enough, Xiong Tianhuo also saw what he wanted to say.

"I don't care, I don't care, I don't care." Catherine yelled: "When you wanted to build a four-axis, how did I help you? I want this, and I want to see that magical gearbox combination."

When Catherine heard what Bai Hao said, her tone immediately changed, and her voice was raised an octave: "Bai, I want a batch of titanium-aluminum alloy, the raw material blanks for making high-strength gears. Something, I heard that you have it in your space research institute."

Only two are left.

Someone stepped forward: "Xiaoyan, you haven't eaten yet, let's talk a little bit."

Yan Qiansheng immediately replied: "Understood. This is the truth that you can't have your cake and eat it too."

Although Yan Qiansheng didn't study this major, he could understand the mechanical principle as soon as he heard it.

"Understood." Yan Qiansheng really understood.

Yan Qiansheng expressed his understanding.

Then, their students are also very winking.

Yan Qiansheng talked about a lot of technology, and also said that this design is completely meaningless to be used in cars, the cost is high, and the efficiency is not suitable. It is just that this structure is very meaningful.

Luo Qianshi drew a simple diagram on the blackboard: "The principle of turbojet is to heat the air in the afterburner, make it expand and inject it backwards. The latter part is called the turbine. The high-temperature air injected here drives the blades. Rotate, further increase the compression pressure, and finally ejected through the tailpipe."

Luo Qianshi started with the picture drawn by Xiong Tianhua: "The compressor and the fan use the same shaft, and the blades of the fan cannot rotate too fast, which will affect the speed of the compressor. We need the compressor to rotate very fast. Right now, all the research is finding the balance, which is either a loss of compressor performance, or the fan goes to a controlled top speed."

The call got through, but Catherine didn't say anything about the titanium-aluminum alloy.

After all, the Haas Factory started the mechanical research of the Ninth Factory, which was very, very helpful.

Bai Hao laughed: "Success, success, I'll arrange it for you right away. But I can't break the rules. In this way, whoever is helping you with the work must not be you doing it yourself. We all know your hands-on ability. It's just in theory. level."

Then, Yan Qiansheng was coaxed away by several people.

Luo Qianshi and Xiong Tianhua took away about [-]% of Yan Qiansheng's bundle of blueprints. This is a brand new way of thinking, which can make the fan and compressor operate in an ideal state.

This increase is not only power, not only fuel-efficient, but also greater cruising range.

It is definitely a feasible development direction for large ducted turbojet in the future.

But what kind of material is suitable?What kind of gear structure is suitable?What kind of rotation control is suitable?