Chapter 91： Zhao Xiangbei asks for help

Guo Jianjun and Ding Yumei are still gone. They came out for a month and stayed with their son in Beijing for a month. They know that their son is living very well now, they have bought a house, and they have successfully lost weight. The most important thing is that they are participating in the military’s top secret. The project, as well as the amazing processing skills, iron rice bowl, what is the rest? except

In addition to the military's projects, the rest are all things that can be proud of the neighbors for a few years, and the incredible things of the Sumiyoshi Hotel, Ding Yumei can't wait to go back and show off. As for the military project, it is a matter of pride in your heart.

The couple laughed back to their hometown, and they didn't know how to describe it. The sadness of the two laid-off workers has long since been swept away. Guo Jianjun even decided to go back and buy a few precision machine tools recommended by Guo Tailai to open a small precision processing plant.

Parents left, leaving Guo Tailai alone, so Guo Tailai was a little unaccustomed. This month, his life does not have to worry about it. When he eats, there are moms and dads to prepare. When you drink, there are moms and dads to prepare. Clothes and moms will be washed. The house will be finished. Don't worry about yourself. When they left, Guo Tailai suddenly discovered that his independent ability to live seems to be a lot slower. early

Up, no mother prepared breakfast, Guo Tailai is hesitating whether he is going out to eat or home instant noodles, and suddenly received a call from Zhao Xiangbei.

“Is it free?” Zhao Xiangbei’s words are concise: “I have sent someone to pick you up.”

"No time!" Guo Tailai did not respond with a good breath. You have already sent someone to pick up, and asked if I have time? After a sentence, I added: "Let people bring me some breakfast, add two eggs of pancake fruit, don't be spicy."

After a while, the car went to the doorway. Upon hearing the knock on the door, Guo Tailai opened in the past and saw the familiar driver.

The pancake fruit was bought in accordance with Guo Tailai’s request, and Guo Tailai could only sit in the back seat. Originally, I wanted to eat it in the car on Zhao Xiangbei. I thought about it or forget it. Before I got on the bus, Guo Tailai ate the pancakes.

“The 微型's miniature strap-down inertial gyroscope has reduced the original navigation system by dozens of times.” Zhao Xiangbei has been waiting for Guo Tailai in the office. He is welcome to see him, and directly asks him to sit down and introduce Road: "The shooting accuracy is also very high, this is the data obtained by a large-scale test of the a100 rocket."

Tai Lai did not speak, he was not polite, he reached out and took the cup that had been poured out for him, took a sip, and waited for Zhao to continue.

"But after a live-fire launch in a training exercise, the military found that the accuracy of the shooting in the actual shooting differed greatly from the test parameters." Zhao Xiangbei paused when Guo Tailai took the water, and then continued: "They think, we Falsely reported the accuracy of the shot."

"Then did you falsely report it?" Guo Tailai asked indifferently to Zhao Xiangbei. This matter has little to do with myself. I don't know what to call myself.

“When testing, the navigation method of gps and inertial navigation is used at the same time.” Zhao Xiangbei briefly introduced: “The shooting accuracy is very high.”

"You can be really big." Guo Tailai sighed silently. The gps is in the hands of the Americans, and their weapon design tests actually use this as a final reference. Of course, if the export version does not matter, but it is not suitable for domestic use. And in this era, gps Americans open to the outside, only 100 meters accuracy, not too precise, dual navigation, should also be a helpless choice. "

No way, we don't have our own navigation satellite. "Zhao Xiangbei also sighed. There is another reason. The use of gps precision guidance is also a technological breakthrough. Even if the purpose of the test is to be carried out, it is necessary to test it."

Looks like pure inertial guidance, according to the design of the sister, the accuracy will not be low, right? Guo Tailai asked inexplicably, hasn't it been tested yet? How come this problem?

“When the shooting range was tested, the gyroscope used was hand-built by dozens of masters.” Zhao Xiangbei then explained: “The design you used to help build is very good. But because of the precision requirements High, resulting in the final refinement can only be handmade, the yield is very low."

"So when you were in mass production, did you slightly change the quality?" Guo Tailai could almost directly guess the reason, and asked silently. "

No way, if you want to improve your yield, you can only give up some quality. "Zhao Xiangbei is also very helpless about this. Not everyone is a fat man. Not every master can be as accurate as a fat man. There is almost no waste. It is not one or two people or one or two. The things of a part, but a big system, sometimes even the dilemma has to make some necessary trade-offs: "If combined with satellite guidance, the accuracy can still meet the minimum parameters. ”

"The military live-fire exercise will certainly not agree to use gps." Guo Tailai understood, directly speaking 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 there is one less guidance correction, and the accuracy of the shooting is not ideal.

"It is true." Zhao nodded to the north.

"Since the military is not satisfied with this, then you still let the master crafted by hand!" Guo Tailai said without hesitation: "Even if the rate of good products is low, it will not make the military dissatisfied! The gyroscope design of the sister is in If the school is finished, you don’t have to pay for the design."

"The problem is that even if the masters are shot, they can only make one level bigger than the gyroscope you made." Zhao Xiangbei said helplessly: "The highest precision is still not achieved." The precision you have done, the quality of the masters is less than 1%."

No way? Guo Tailai had a question: "The gyroscope is not as small as possible." Limited by the process, a slightly larger size can also achieve full functionality! If the real yield is too low, then add another size. I remember that the graduation design of the sister and sister included different sizes of gyroscopes, and there is always a suitable mass production. ”

"But the smallest size you made is the most accurate." Zhao Xiangbei said helplessly: "Now the military's insiders suspect that we have not effectively integrated the system, but only on your basis. They changed the product and they were very dissatisfied with it."

"To tell the truth, the parameters that you later tested are indeed less than the design made by the sister-in-law alone." Guo Tailai smiled, not afraid of Zhao Xiangbei, and licked his mouth.