Chapter 284 Director Gao is so considerate
As for why he did not choose Dow’s DD double-base propellant, there is no other reason. Its filling method is somewhat different from Gao Zhendong’s idea.
When choosing propellant, Gao Zhendong also saw a very interesting sentence - "Propellants containing XX are highly toxic after burning, and are usually only considered for use in the final stage engines of long-range missiles."< br>
After choosing the configuration, propellant, and shell material, it was simple for Gao Zhendong. He produced and sold it himself, and arranged the 591.
Carbon steel and alloy steel are commonly used materials for solid rocket casings. 591 has the mechanical properties of alloy steel, is resistant to high temperatures, and can be rolled and forged. It is really suitable for processing rocket engine casings. It couldn't be more appropriate.
Self-produced alloy steel, coupled with good processing performance, has the advantage of being cheap.
Don’t underestimate the cost of processing. Take titanium, which Gao Zhendong often promoted as a “high-end” material in his previous life, as an example.
Titanium itself is rich in reserves and is not difficult to smelt. Why was it so expensive in the past? The main reason is that this product is difficult to process.
Gufa’s throat lining and nozzle, which have the highest material requirements, are no problem for Gao Zhendong. The tungsten copper is already ready.
In terms of attitude control, Gao Zhendong chose the same solution as Lao Maozi's AT-3, that is, the Chijian-73. In order to reduce the complexity of the engine and reduce the control of the missile body roll, To meet the needs, a one-dimensional control surface + gas rudder solution is used.
As for what to use for a gas rudder? There is tungsten-molybdenum alloy, right?
In this plan, the engine has only two beveled nozzles and they are on the same plane. Theoretically, the missile can only be controlled in one direction. However, this plan cleverly uses the roll of the missile body. Turn the gas rudder only when it has rolled to the appropriate angle.
To put it simply, when the control surface is perpendicular to the ground, the left and right sides of the missile are controlled, and when the control surface is parallel to the ground, the missile's ups and downs are controlled.
Despite the simple principle, the effect is really good. One benefit of the simple principle is that it is cheap.
After deciding these things, Gao Zhendong still has a lot to do, including working pressure, expansion ratio, combustion chamber, thermal calculation, and charge structure.
Fortunately, the requirements for this engine are among the lowest among missiles, and even the fixed-engine design requirements for rocket launchers are more difficult than it.
Because there are two requirements for rocket launchers that must be met: one is range, and the other is cheapness.
These two requirements are even contradictory. Under the same conditions, the one that shoots far is not cheap, and the one that is cheap will probably not shoot far.
So good rocket launchers and shells are not very cheap. The joke about "dozens of BMWs flying in the sky" that was once circulated is not just a joke.
Of course, compared with the pig mother ship, which costs 800,000 US dollars per 155 shells, and its performance is not as good as expected, it can be regarded as high quality and low price.
Gao Zhendong's working status has naturally become half a day with two kicks and half a day with a single board computer, and the progress is not affected much. After all, for him, being able to change his mind frequently can actually improve efficiency.
Gao Zhendong returned home from get off work and saw several people waiting at the door of his house, guarding a wooden box. Lou Xiaoe asked them to come in and sit and wait, but they were declined.
Seeing Gao Zhendong return home, a comrade who seemed to be the leader stepped forward and handed Gao Zhendong a notebook: "Hello, Director Gao, we have been ordered to send you equipment."
< br>Gao Zhendong checked and found that there was no problem, and this comrade seemed familiar, but he couldn't remember when he had contacted him specifically. Anyway, the certificate was genuine from the National Defense Work Committee, and he didn't know where he was from. .
He was a little strange. He didn't apply for equipment, especially when he applied for it at home, he didn't even have it.
In this regard, he has always been very careful not to increase the burden on the public. As long as it is used at home, even if it is needed for scientific research, he will buy it with his own money. If it is more expensive or has a special channel, he will give it to Lou. Home is taking care of it.
"Comrade, am I mistaken? I haven't applied for any equipment recently." Gao Zhendong said with a smile as he invited them into the room.
The visitor also smiled and said: "You didn't apply for this, it was assigned by the Committee to the 12th Machinery Department. You are the main designer of this thing. You must also participate in the trial and test work of the prototype. Yes."
After that, he opened the box for Gao Zhendong to check. When he saw it, it turned out to be a printer.
The computing institute just gave him one and put it in the computer room of the factory. However, it was inconvenient for the computing institute to send one to his home.
It seems that the National Defense Work Committee thought this thing was good and could facilitate Gao Zhendong's work, so the National Defense Work Committee simply stepped in and transferred another prototype from the operating room's few units. Then a very honest reason was given: the designer personally participated in the trial testing of the prototype.
Gao Zhendong knew that this thing had already had a final meeting today, but Gao Zhendong did not go. There is no need to waste time on such a small thing, it can be solved by calculation.
When the computing center held an appraisal meeting, they specifically mentioned this matter: "Comrade Gao Zhendong, the main designer of the printer, was unable to attend the meeting because he was temporarily tied up with work. He entrusted us to express his opinions to the appraisal committee. Sorry.”
But this does not affect the smooth passing of the printer’s results appraisal. Just kidding, it will be a damn thing if it fails to fill in the blanks.
There are different opinions on the origin of the invention of acupuncture and the emergence of the first commercial machine, but there is no doubt that the computing machine should be among the earliest ones.
It’s hard to say whether it’s world-leading or not, but I dare to say it with pride in being world-advanced and filling domestic gaps.
Even the appraisal committee didn’t know what to appraise, because this thing was a new thing, so new that even the concept was new, so they just took the 12th Machine Department and the 3rd Rolling Plant from the beginning. They jointly sent the research application report to the 12th Machinery Department and went through it once before it was completed.
Some experts also asked whether they should refer to the relevant requirements of typewriters. After a closer look, the two things sounded and looked similar. In fact, the difference was as big as that between humans and chimpanzees, so they gave up.
Gao Zhendong really wanted to have a printer at home. He was originally embarrassed to ask for it, but the National Defense Work Committee has done such a good job that he even came here.
Several visitors helped Gao Zhendong place the printer in the south room, and then left without even taking a sip of water.
The things delivered were quite complete, including several packs of 16-page printing paper. While Lou Xiaoe was cooking, Gao Zhendong immediately turned on the computer and edited a copy of Lou Xiaoe's book in the editing environment. Something needed.
——A mathematics test paper.
Director Gao personally set the questions, asking whether you are advanced or not, that is, there is not enough time, otherwise Gao Zhendong can solve all the math, physics and chemistry.
Lou Xiao'e listened to the "sizzling" sound of the printer, and walked over curiously to take a look. When she saw a clean and tidy test paper being spit out by the machine, she was happy. This was all she needed. It was also the end of April, and the exam would be held in a few months. She had reviewed a lot of knowledge, but there was a slight lack of opportunities for practical simulations.
In fact, Gao Zhendong's handwritten test paper is not unusable, but it is rare. Making this kind of test paper is very refreshing, isn't it?
——
Don't look at the printer. In Gao Zhendong's opinion, it is a small thing and not worth mentioning. However, in the eyes of some ministries, it has a different meaning.
For example, the Ministry of Foreign Commerce, after learning about the situation of Gao Zhendong, the "number one person in exporting foreign exchange", has also taken a closer look at the notification between ministries and commissions, from the Third Steel Rolling Plant of the Seventeenth Machinery Department Pay attention to relevant news.
So when the printer passed the appraisal and was not on publicity channels, they had already noticed it.
The new machine created by "the first person to earn foreign exchange through exports" is worth a look.
At this sight, I am tempted. If I don’t export this thing, it will be a waste of resources.
It is a perfect match with DJS-59, to the extent that it even makes people feel that if this thing is not equipped with DJS-59 1:1, then it is at least 1:2.
And it is purely for civilian use. Unlike sensitive equipment such as 591 and DJS-59, this thing does not have any sensitivity. I dare to sell as much as you want, and I dare to buy it to anyone. Sell.
Comrade Gao Zhendong was so considerate. Seeing that the export of urea steel was about to be affected due to the domestic promotion of industrial production of urea for his own use, he immediately made a new thing to fill the gap.
In the words of later generations, Director Gao is called horizontally linking multiple departments, vertically exploring customer pain points, developing new tracks, focusing on new audiences, self-iteration of the product matrix, assisting customer needs, empowering customer goals, and developing new play methods. Promote the widespread implementation of new business scenarios, both aligning with incremental customers and following up on existing customers.
Of course, the Ministry of Foreign Affairs in this era cannot make such nonsense, but their thoughts are very clear: this thing, I'm sold!
So within two days, this thing appeared on the shelf product list of the Ministry of Foreign Trade.
I was passing by and took a look. The latest peripheral accessory of DJS-59, DY-60, is now on sale. You won’t suffer any loss when you buy it. You won’t be fooled when you buy it. You don’t have to worry about it anymore. Haha. The screen is ready. If you want to add some money, I will give you a supporting editing environment.
Although the relationship was already very tense, it did not prevent us from still doing business. Comrade Sergeyev, who was in charge of this matter in the north, quickly received the request. This thing called DY-60 caused a stir. A large number of units using DJS-59 computers are interested in importing them, and strongly demand the import. After all, copying results on a computer monitor is really not a comfortable job.
Sergeyev took his briefcase and tapped it wildly on his desk: "Idiots, a bunch of idiots, they are betraying the great motherland. They are actually defeated by hedonism at work!!!"
His deputy Petrovich looked firm: "Comrade Sergeyev, this is the need for work, this is the need for more efficient construction of the great motherland, you need to calm down." Damn, I also want to use a printer.
(End of this chapter)