Chapter 181 Zhao Xiangbei for Help (Part 1)

Guo Jianjun and Ding Yumei left anyway. They came out for a month and stayed with their son in the capital for a month. Knowing that his son is living a good life now, he even bought a house and lost weight successfully. Most importantly, he is participating in a top-secret military program. project, as well as an admirable processing skill, an iron rice bowl, what is there to worry about?

Except for the military projects, everything else is something that can be proud of for a few years among the neighbors, and there is something even more unbelievable, such as living in a state guesthouse. Ding Yumei can't wait to go back and show off. As for the military project, it is something that can be proud of in the heart for a lifetime.

The couple returned to their hometown with a smile, feeling so happy that they didn't know how to describe it. The sadness of the couple being laid off has long been swept away. Guo Jianjun has even decided to buy a few precision machine tools recommended by Guo Tailai and open a small finishing factory after returning home.

Parents left, leaving Guo Tailai alone, which made Guo Tailai a little uncomfortable. This month, he doesn't have to worry about his life at all. When it's time to eat, his parents will prepare it, when it's time to drink, his parents will prepare it, his parents will wash the clothes, and his parents will tidy up the house. Don't worry about yourself. The two left all of a sudden, and Guo Tailai suddenly found that his ability to live independently seemed to be much slower.

Waking up in the morning, without the breakfast prepared by his mother, Guo Tailai was hesitating whether to go out to eat or make instant noodles at home, when he suddenly received a call from Zhao Xiangbei.

"Are you free?" Zhao Xiangbei said concisely: "I have sent someone to pick you up."

"No time!" Guo Tailai replied angrily. You already sent someone to pick you up, and you asked me if I was free? After saying a word, he added: "Have someone bring me some breakfast, pancake fruit with two eggs, not spicy."

After a while, the car arrived at the alley outside the door. Hearing the knock on the door, Guo Tailai went to open it and saw the familiar driver.

Sure enough, the pancake fruit was bought according to Guo Tailai's request, and Guo Tailai could only sit in the back seat resentfully. Originally, Zhao Xiangbei wanted to eat pancakes in Zhao Xiangbei's car, but after thinking about it, he decided to forget it. Before getting in the car, Guo Tailai devoured the pancakes.

"Yanyan's miniature strapdown inertial navigation gyroscope has reduced the original navigation system dozens of times." Zhao Xiangbei was already waiting for Guo Tailai in the office. Dao: "The shooting accuracy is also very high. This is the data obtained after a large-scale test of the A100 rocket launcher."

Guo Tailai didn't speak, and he was not polite, he directly took the water glass that had been poured for him, took a sip, and waited for Zhao Xiangbei to continue.

"But after firing live ammunition in a training exercise, the military found that the shooting accuracy in actual shooting was quite different from the test parameters." Zhao Xiangbei paused when Guo Tai came to fetch water, and then continued: "They think that we Falsely reported shooting accuracy."

"Then did you make a false report?" Guo Tailai asked Zhao Xiangbei indifferently. This matter has little to do with me, I don't know why I asked myself to come here.

"During the test, the navigation method using GPS and inertial navigation at the same time." Zhao Xiangbei briefly introduced: "The shooting accuracy is very high."

"You guys are really big." Guo Tailai sighed speechlessly. GPS is in the hands of the Americans, and their own weapon design tests actually use this as the final reference. Of course, it doesn't matter if it is an export version, but it seems a bit inappropriate for domestic use. Moreover, in this era, the GPS Americans open to the outside world is only 100 meters accurate, which is not too accurate. Dual navigation should also be a helpless choice.

"No way, we don't have our own navigation and positioning satellites." Zhao Xiangbei also sighed. Another reason is that the use of GPS precision guidance is also considered a technological breakthrough, even if it is for the purpose of inspection, it must be added for testing.

"It seems to be pure inertial navigation, according to the design of the senior sister, the accuracy will not be low, right?" Guo Tailai asked puzzled, hasn't it been tested? How can there be such a problem?

"During the shooting range test, the gyroscope used was hand-made by dozens of master craftsmen." Zhao Xiangbei continued to explain: "The design you helped to build was used, and the results were very good. But because the precision requirements are extremely As a result, the final finishing part can only be made by hand, and the yield rate is very low.”

"So during mass production, you changed the quality slightly?" Guo Tailai could almost guess the reason directly, and asked speechlessly.

"There is no way, if you want to increase the good product rate, you can only give up part of the quality." Zhao Xiangbei is also very helpless about this, not everyone is fat, not every master can process with extremely high precision like a fat man. It is said that there are almost no waste products. This involves not one or two people or one or two parts, but a large system. Sometimes even if there is a dilemma, some necessary trade-offs must be made: "If the joint satellite guidance is used together, the accuracy is still the same. able to meet the minimum parameter requirements."

"The military will definitely not agree to use GPS for live ammunition exercises." Guo Tailai understood, and directly explained the reason for Zhao Xiangbei. The military will never want its navigation system to be controlled by the Americans, so it will only use inertial navigation instead of GPS, so the lack of a guidance correction can explain the unsatisfactory shooting accuracy.

"Indeed." Zhao Xiangbei nodded.

"Since the military is not satisfied with this, then you should let the master craft it by hand!" Guo Tailai said without hesitation: "Even if the good product rate is low, the military will not be dissatisfied! The school completed it, and you don’t have to pay for the design.”

"The problem is, even if the master craftsmen do their best, they can still only make the gyroscope that is one level larger than the one you made." Zhao Xiangbei said helplessly: "It still can't reach the highest precision. .With the precision you made, the good product rate of the master craftsmen is less than 1%."

"No way?" Guo Tailai had a question: "The smaller the gyroscope, the better. Due to the limitation of the technology, a slightly larger size can still achieve full functions! If the yield rate is too low, then add another size. I remember that the senior sister’s graduation project included gyroscopes of different sizes, and there was always one suitable for mass production.”

"But the one you made with the smallest size is the one with the highest precision." Zhao Xiangbei said helplessly: "Now the military's insiders suspect that we have not effectively integrated the system, but just made a little improvement on your basis. They’re not happy with it when they make changes and roll out the product.”

"To be honest, the parameters you got after the test are indeed not much better than the design made by the senior sister alone." Guo Tailai smiled, not afraid of Zhao Xiangbei's embarrassment, he glanced at his mouth and complained.