Chapter 815: Temporary aircraft carrier

Before Tan Zhenhua could finish his "special request", he was interrupted by Zhu Yingfu, who was pale, and not only was his face pale, even his grandfather Yang Yan's face was as white as he had just finished brushing it. Like a lime wall.
"Mr. Tan, I heard that your build is not like a container bulk carrier, but like a light aircraft carrier."
Although the big piece of ice in the corner of the house was still "swishing" coldly, the old man's forehead had already involuntarily bursting out of white hair, and he couldn't help but pick up the big cattail fan desperately to himself Fan the wind.
"How can this be an aircraft carrier? It's just a cargo ship!" Tan Zhenhua said categorically.
"Uh, this..." Yang Yan and his apprentice couldn't help but look at each other. They didn't know how to pick up the stubble, but Tan Zhenhua continued: "But the ship I want is a bit special. I buy it. This ship is for transporting several "Sea Harrier" aircraft."
"President Tan, of course it’s okay to transport the plane, but your request..." Zhu Yingfu shook his head and said, "You obviously don’t just want to transport the plane. According to your request, I’m afraid you still want the plane to be on this ship. Let's fly?"
"Hey, you see through it. I do have this idea. Why? Difficult?"
Zhu Yingfu said unhappily: "Of course it is difficult, it is not an ordinary difficulty-Mr. Tan, I have heard of the "Sea Harrier" this British fighter. Let's not say where you go to get such a few fighters. Although this type of aircraft can take off and land vertically, you have to know that the deck of a civilian ship cannot withstand the powerful impact and high temperature of the tail flame during the take-off and landing of a fighter jet. Let me put it this way, let alone the civilian ship, just let us China None of the warships built today can hold it."
"I have my own way of where the plane comes from. What we are discussing now is how to make the cargo ship I want can meet my requirements. Uncle Zhu, you studied in the U.S. You have never heard of being caught in the Falklands War. The "Atlantic Carrier" that Argentina sank? It was temporarily modified by a civilian cargo ship, and as far as I know, it was performing a mission to transport more than a dozen "Sea Harrier" fighters. And a dozen helicopters arrived on the battlefield to supplement the battle damage of the Royal British Navy, but unfortunately, it suffered a "flying fish". Of course, fortunately, all the "Sea Harrier" fighters on the ship were all before the battle began. The takeoff was transferred to the island and escaped a catastrophe. It can be seen that it is feasible to temporarily refit a cargo ship to serve as a take-off platform for the "Sea Harrier", and there is also a precedent."
Just as Zhu Yingfu wanted to refute, Yang Yan, who had been silent for a while, said: "Yingfu, wait a moment. The method Xiao Tan said is not impossible. In World War II, it was an emergency. Britain and the United States both requisitioned a large number of civilian ships and simply modified them to be used as light aircraft carriers. Although such a modified ship could not carry a few aircraft, it was still very useful for escort. When I was internship in the United States, I personally saw it. I have seen this modification."
"But teacher, it was the aircraft carrier that was used in World War II, but it is very different from the current aircraft carrier. It is equipped with piston-propeller-powered aircraft. This aircraft is light in weight and easy to take off and land. A deck that is too long can meet the requirements, and the current aircraft carrier..."
"What Xiao Tan always wants is not a real aircraft carrier." Yang Yan waved his hand and interrupted Zhu Yingfu's words: "From what he said just now, he just wanted to convert a merchant ship into a "Sea Harrier". As for the temporary take-off and landing platform of this fighter jet, he didn’t make any special instructions just now, and it must not be very demanding. Xiao Tan, do I understand that, right?"
Tan Zhenhua stretched out his hand and gestured a thumbs up to Yang Yan and said: "Professor Yang Yingming, when it comes to the point, I made this change on this ship, indeed, it was used for emergency take-off and landing of the "Sea Harrier". It is still a merchant ship. Count one more "temporary aircraft carrier"? So you don't need to care too much about durability. Of course, it's good to be able to sustain it for a while."
Hearing what Yang Yan and Tan Zhenhua said, Zhu Yingfu also turned the corner. He touched his chin for a while and said: "If you want to say this, there are ways to make do with it, but the upper deck requires steel. Be careful, at least the yield strength must be high, and it must be resistant to ablation. Teacher, I remember that before I went abroad, the Iron and Steel Research Institute was working on a new alloy steel project, and the goal was to exceed 400 MPa. , How are they doing now, do you know the teacher?"
"Of course I know about this." Yang Yan shook his head and said, "But as far as I know, they can only produce steel with a yield strength of 390 MPa in a laboratory environment, marked 907A, but they have not yet been put into production. As for higher yield strength, no progress has been heard yet."
"This is troublesome." Zhu Yingfu rubbed his hands and said: "Without the material, we can't make do with it even if we want to do it? According to Mr. Tan's request, I think 390 MPa is probably enough, but it must be more than 450. , And this is not enough, and the ablation resistance is also a hard indicator."
"Why is this shipbuilding steel so troublesome?" Tan Zhenhua asked.
After all, he had a background in electronics in his previous life. As the so-called "interlacing is like a mountain", this machinery, especially the materials industry, is too far beyond his knowledge reserve, so although he can barely understand that the master and apprentice are here What to say, but the reason is completely incomprehensible.
Fortunately, Yang Yan also knew that this little gold master was a layman, so he explained patiently: "Of course, China has no problem with the steel for building civilian ships, and even normal warships can do it. However, this steel is very different from steel. The "yield strength" mentioned is an important indicator of steel. It refers to the yield limit of a metal material when a yield phenomenon occurs, that is, the stress that resists slight plastic deformation."
After he said this, he looked at Tan Zhenhua, who was still confused, smiled and shook his head and said: "Let me be more straightforward, we all know that metal has a certain memory, you bend a piece of steel slightly One point, as soon as the hand is loosened, it can be restored to its original shape. What about the so-called "yield strength"? You apply a force, and the magnitude of this force is exactly at a limit value-if it exceeds, it can make the piece of metal It cannot be restored to its original shape, that is, it can be permanently deformed. The value of this force is called "yield strength". Withstand this strength, the parts will be permanently invalid and cannot be restored. For example, general civil ship structural steel, yields A strength of 200-300 MPa is enough. Of course, the requirements for warships are higher, and submarines are even higher."
"But our country can build warships as well as submarines." Tan Zhenhua wondered: "Professor Yang, won't you tell me, these ships built by our country are still imported steel?"
"Import? Hehe, then someone must be willing to sell it to us."
Yang Yan couldn’t help but smiled bitterly:
Our country can indeed produce some relatively high-demand steel, but the output is small, the cost is high, and the quality is not too stable. Moreover, a good ship steel, in addition to the yield strength In addition to being high, other conditions must be met, such as being able to withstand the corrosion of harsh conditions at sea and being easy to weld. In this respect, we are indeed behind a lot."
Yang Yan’s remarks can be regarded as heartfelt words, but Tan Zhenhua’s ears have a different taste. He can't help but think of a classic between two people on a strange occasion at a certain moment. Dialogue, which brought a bold idea to his mind.