Chapter 675 Comrades of Delong Wangshu
You must know that this open source database was actually managed and updated by one of the world's largest commercial database companies in his previous life. Its functions and performance are absolutely outstanding. Not to mention the basic functions of the database, this can meet all the needs of most software for structured databases until the 21st century.
Gao Zhendong thought for a while. This source code is the result of practice, but the theory of the database does not involve much.
A good man will do his best to the end and send the Buddha to the West. Gao Zhendong rummaged through the system information again and got a book "Database Technology". This book was specially selected by him. The main content is database. It has theoretical content and not much application part.
In this way, the most time-consuming thing for Gao Zhendong about databases is to replace all the content in this book, including application examples, with the simplified version of the database he has.
Fortunately, there isn't too much content, otherwise it would really be troublesome.
While eating, Lou Xiaoe said: "By the way Zhendong, I called home today. My brother will be back soon."
Gao Zhendong was shocked. He counted the days and didn't know. It's short, it's time to come back almost once. Fortunately, when he comes, I can discuss something with him.
I just don’t know if this uncle has found a sister-in-law for Lou Xiaoe.
However, this "immediately" is probably a relatively long time thing. When I made this call, Lou Shouxing was probably still on Hong Kong Island. In any case, it was impossible to call today and arrive tomorrow.
Many of the common sense Gao Zhendong used when crossing is not applicable these days. For example, most provincial capitals can be reached by railway within 12 hours.
But it is very difficult at this time, let alone 12 hours. If the idea is memorized or the distance is far, it may not be possible to make it in 120 hours.
But for Lou Shouxing, speed is not an issue. He can complete the flight by airplane. What is troublesome for him is the procedures and preparations, which take a lot of time.
Gao Zhendong was doing other things while revising the database technology book.
On this day, he had just finished his class at Beijing University of Technology and was walking to the office.
Now that the second phase of the SZ61 supporting plan has been placed at the 12th Machinery Department, there is no need to go to Classroom 61 to answer questions.
Before I even reached the office, I was stopped by someone.
"Professor Gao, please stay."
The voice was very familiar. Gao Zhendong turned around and saw that it was Professor Luo.
Professor Luo has been working on the issue of terminally sensitive bombs since the grenade project was finalized and mass-produced. However, he only had to find Gao Zhendong very rarely, so everything went smoothly.
Stop yourself today, is it because the terminally sensitive bomb has produced results?
Gao Zhendong was happy and greeted Professor Luo.
"Professor Luo, what happy event do you have? Is it about the explosives?"
Seeing Professor Luo's face beaming with joy, Gao Zhendong guessed.
If it weren’t for the good news about the terminally sensitive bomb, he would not be like this.
"Yes, yes, the news is good and bad, but overall it is good." Professor Luo smiled.
"Oh? Tell me." Gao Zhendong smiled.
Professor Luo first handed him a stack of information: "The ground-fixed armor-piercing test has been done. Take a look."
In this stack of information, there are photos and written reports.
Gao Zhendong opened it, looked at it, and smiled: "Oh, this is really good news, this depth is good."
The self-forged fragmentation warhead made by Professor Luo and his colleagues is below the designed explosion height and has an armor penetration depth of no less than 90mm. Gao Zhendong is actually very happy about this number.
Although it is less than a decimeter, except for the front armor of the tank, not many can withstand this depth of penetration.
Not to mention the current generation of tanks in the West, all of them are basically brittle. At this time, it happens to be a confrontation between armor and bullets. When the bullets gain the upper hand due to the rampant use of energy-containing armor-piercing warheads, composite armor will It has not yet been launched on a large scale and has actually been put into use. In fact, we are the only ones up to now.
So the tanks of this era, due to the emergence of energy-concentrated armor-breaking and missiles, are at a point where the theory of "armor is useless" is prevalent. Every tank in the Ocean Convention Organization counts. Basically crispy.
Take the Gallic AMX-30 as an example. Regardless of the inclination angle, in addition to the artillery shield, the frontal armor thickness of this product is only 80mm, and the inclination angle is only about 170~200mm. Basically, in addition to bullying armored vehicles, it will run away from everyone it sees. It can probably bully the small countries in Africa, its traditional sphere of influence.
By the way, this thing has good maneuverability and can run pretty fast. Maybe this thing is the most suitable for the Gallic Chicken. Even though it can't be beaten, it can run away.
As for other positions, it is almost impossible to see. The top armor is 20mm, the top of the engine is 15mm, and the side armor is 30~40mm.
So the 90mm penetration is more than enough to hit weird main armor like the AMX-30, because this 90mm is hit from top to bottom, and the inclination of the AMX-30's main armor is not too big. meaning. It can be said that with this deep penetration, as long as your luck is not too bad, it will be no problem to fight all the second-generation tanks of the Ocean Convention Organization.
Gao Zhendong looked at it and nodded: "Well, the uncooled mercury cadmium telluride dual band was finally selected?"
Professor Luo smiled and said: "Yes, in order to save cost and volume, an uncooled mercury-cadmium telluride dual-band detector is used. In this way, there is no need for refrigeration, and the cost is further reduced. And the simpler the structure, the easier it is to strengthen it. The easier it is to get there. "
This thing does not need to be loaded with artillery shells as soon as it is born, but at least rockets must be loaded and must be able to withstand certain environmental conditions such as acceleration and vibration.
Gao Zhendong made sure: "Is the performance of the infrared detector sufficient?"
Without cooling, the performance of the infrared detector will decline.
"It has been tested and it is sufficient. For targets that are driving or whose engines have been turned off within half an hour, the firing rate is over 85%. Moreover, the dual-band detector has a false triggering rate for typical interference sources such as fires. , no more than 10%.”
As long as it is a running motor vehicle, the engine temperature must not be low. Even if the engine is turned off, it will not cool down in a short period of time.
In Gao Zhendong's previous life, he drove an SUV, and the temperature was still not low even after the engine was turned off for half an hour, let alone an armored vehicle or a heavy truck with a big engine.
“Well, this data is pretty good, as long as the probability of error is low enough, it’s impossible to eliminate it.”
If we really want to push these data to the limit, we have to go to the Infrared imaging and other methods are obviously a bit unrealistic these days.
Professor Luo was also very happy after hearing what Gao Zhendong said. Most of his research work is mainly about picking and choosing among the technologies given by Gao Zhendong, freely combining them, and finally choosing a comprehensive performance function and cost Find the most suitable combination.
This work cannot be said to be easy, at least it can be said to be not difficult.
After reading it again, Gao Zhendong smiled and said: "This thing is already well done. Is there any bad news?"
In his opinion, although this terminally sensitive bomb has not yet It's been tested with the dispenser and rockets, but for the part of the testing that's been done so far, it's pretty good.
At this stage of field testing, the comprehensive hit rate is no less than 55%. This is because as long as it is thrown into the predetermined area, the two problems of "not firing and misfiring" are solved. The problem is not that big.
Although 55% does not seem like a missile, the hit rate of more than 70% is high, but this thing hits a large area, which is actually very amazing.
The hit rate of Lao Maozi's first-generation terminally sensitive ammunition, which was produced ten or twenty years later, was not as good as this.
Professor Luo smiled helplessly: "Well, the troops are using this to hit our composite armor and anti-explosion target plates."
Huh? Gao Zhendong was stunned for a moment, then burst into laughter. This was indeed something they could do.
It is expected that the enemy should be lenient, very lenient. If we have it, the enemy will also have it.
As for the penetration depth of this projectile, the composite armor used in the front main armor of the second-generation tank is undoubtedly a bit beyond the standard, and it is really impossible to chew on.
Compared with the explosive missile, even if the self-forged fragment is equivalent to an armor-piercing projectile after being formed, and the explosive missile is better at preventing penetration than breaking, but for the 90mm explosive missile improved by Gao Zhendong using double anti-throwing plate technology, There are still some limitations.
Gao Zhendong smiled and said: "Have you penetrated it?"
Knowing that these two things were written by Gao Zhendong, Professor Luo shook his head and smiled: "You think too highly of me, It can't be penetrated. It's too hard for you to penetrate these two things."
"What do they mean?"
"They didn't expect to penetrate them. these two After all, they also know where these two things are used. They just want to see if they can make the penetration depth of this thing more than 120mm. They also have arguments, saying that it is a 61-fire 80mm caliber 550-mm penetration depth. , the 120mm caliber of the Chijian-61 missile has a penetration depth of 650, so the 110mm caliber missile has a penetration depth of 90mm, which is too low.”
Gao Zhendong couldn't laugh or cry, hey, these comrades are quite reasonable.
He thought for a while and said with a smile: "No, just follow this. The design specifications can be changed wherever they are said to be. The armor-piercing principles of these bullets are different, and the charges are The shape and structure are very different, so there is no such analogy. To ensure the huge explosion height of the self-forged fragments, It will inevitably sacrifice the high armor penetration of the concentrated armor. If they ask again, they will say that this is enough. "
In fact, 90mm or 120mm is better for the current tank armor. There is no point in saying it, because the lethality is overflowing, so there is no need.
With Gao Zhendong's top cylinder, Professor Luo was completely relieved. He knew that Gao Zhendong was still somewhat special in the army.
It’s really cool to do Professor Gao’s project. Not only is he responsible for solving problems for you, but he is also absolutely unambiguous when it’s time to help you. This allows the comrades in charge of specific affairs to get started. Just very comfortable.
Gao Zhendong shook his head and smiled: "Besides, they may not be able to afford the 120-meter penetration."
(End of Chapter)