Chapter 143: The speed is not up to standard? Where is the pitfall?
"Xiao Ling, you have lost weight. You are really wearing thin clothes and never regret it. You are so thin that you look haggard!" Qin Tao said to Zhao Ling after seeing her.
"Screw you, we are all busy with work, who will miss you? Stop being so sentimental."
"Really? Then I'm really disappointed. You don't miss me at all, but I miss you every day."
"No, I miss you a little."
"That's pretty much it. Come on, let's have a boo first!"
Pop? What is this? Zhao Ling had never heard of it before. Then, she felt a burst of moisture on her lips. With a pop, she finally understood.
"Hey, be careful of being seen." Zhao Ling blushed and looked around.
It was afternoon, everyone was working, and the road here was empty, with no one around.
"How is the situation on Chongming Island? Is it going well?"
"Well, there is no problem there for the time being." Qin Tao said.
"Then why did you come back?"
"I miss you."
Although she knew Qin Tao was joking, Zhao Ling still felt very sweet in her heart.
"The second missile boat has been launched, and the current sea trial is going well." Zhao Ling said: "Aren't you anxious about subsequent orders?"
Qin Tao smiled and said: "One trick can be used everywhere. Only our factory can build this kind of missile boat. No other factory can take on this hot potato."
"You are quite confident."
The two of them continued walking forward.
"Xiao Ling, if the navy doesn't give us follow-up orders, will you, the military representative, have to leave?"
"Um."
"How about taking advantage of this free time and let's go to the capital together and I'll formally propose marriage to your family?"
"Ah? Well, well, well!" Zhao Ling nodded repeatedly, this was what she was looking forward to the most.
Although Qin Tao kept talking about him and never explained the real purpose of his return, Zhao Ling didn't care anymore. The two of them had already done that, and of course they had to get married quickly.
Under the same blue sky, Zhongjiang Shipyard.
Three ship production lines including a 30,000-ton slipway, a 1,500-ton ramp, and a small boat show the strength of this shipyard. They are a backbone enterprise with an annual production capacity of 200,000 deadweight tons of ships, and are also a subsidiary of China Shipbuilding Industry Corporation.
, they are proud.
And today, they also ushered in a new moment.
A brand new missile boat has completed all construction work.
Looking at the large missile boat and the hulls on both sides, Ma Guoqiang was very excited. He said to the military representative Wang Gang on the side: "Representative Wang, this is the strength of our Zhongjiang Shipyard. We can completely build it within a month."
, Complete the construction of the missile boat! Three times faster than the Mingzhou Shipyard!"
It is normal for them to be fast, because in their warehouses, various radars, anti-ship missile launch tubes, etc. are all ready-made. Those weapon systems originally planned for the next few 037-class missile boats can be directly used
Load it onto the 022 missile boat.
"Yes, Zhongjiang Shipyard has been building missile boats for our navy. The navy is quite confident about you. Now, let's start the sea trials!"
"Yes, the sea trial has begun! Let us all see how fast this ship can run, it will create a miracle!" Ma Guoqiang said.
More than a dozen shipyard technicians and navy sailors stepped onto the ship and quickly started the motor. With a roar, the missile boat began to slowly leave the dock.
The four water jet thrusters were working at full power, constantly pushing the water flow, and the missile boat surged forward like an arrow off the string.
Ten verses, twenty verses, thirty verses, forty verses!
The missile boat continues to sprint, but it can be seen that the missile boat's acceleration has begun to decrease.
Forty-one, forty-two, forty-three, when the missile boat reached a speed of forty-three knots, it could no longer accelerate.
The people observing on the pier were all experienced. Even if they couldn't see the speedometer, they knew that the speed of the missile boat at this time simply could not meet the design specifications.
"What's going on?" Ma Guoqiang's expression suddenly changed: "Keep accelerating!"
The missile boats of Mingzhou Shipyard can reach more than 50 knots! How come the missile boats of Zhongjiang Shipyard can only reach more than 40 knots?
"The ship has reached its maximum speed and can no longer increase its speed. Moreover, it is still flowing downstream."
When he heard the news from the sea test personnel, Ma Guoqiang's heart skipped a beat.
Any ship has a maximum speed. The faster the ship, the greater the resistance of the water flow. Moreover, the relationship between speed and resistance is not directly proportional.
At ten knots, the two have a linear relationship, at twenty knots, it is approximately a quadratic relationship, and above thirty knots, it is a cubic or even higher relationship.
At the current speed, the resistance encountered by the ships is also huge, and all their power is used to overcome the resistance of the river water. Therefore, it is simply impossible to continue to increase speed.
This still takes advantage of the downstream flow. If it were going against the current, the speed would probably not exceed forty knots!
how so?
Wang Gang, the military representative on the side, also changed his expression: "Speed is the most important indicator of our missile boat. If the speed of this missile boat cannot meet the standard, then I will not sign. The Navy refuses to accept such a missile boat."
Cold sweat broke out on Ma Guoqiang's back. He quickly said: "Representative Wang, please rest assured that we will definitely hand over qualified missile boats to the troops. If the speed cannot be reached, we will solve it immediately."
Research and solve!”
When the missile boat came back, everyone had tense faces, and Ma Guoqiang immediately called a meeting with technical staff.
"It's definitely not a welding problem. We welded it exactly according to the design drawings without any changes." A technician said: "The lack of speed has nothing to do with us!"
"The power systems are all imported, whether they are engines or waterjet propellers, unless, unless..."
This chapter is not finished yet, please click on the next page to continue reading the exciting content! "Unless what?"
"The engine power is not enough, or the waterjet propeller is the wrong model."
"How is this possible? The drawings are clearly written, and the reserved positions are completely appropriate."
"Call the Navy immediately for verification!" Ma Guoqiang said.
A few minutes later, the caller came back.
"Yes, the model is exactly the same. It has been equipped with missile boats of the Navy. It uses two mtuvte74l power diesel engines, each with an output of 6800 horses, and four jet thrusters imported from the UK."
"What's going on? With the same power and the same shape, why can our missile boat only run to 40 knots? Tell me, what's going on?" Ma Guoqiang was worried.
"I'm afraid we can only contact the design unit for this. If the speed cannot be reached, it is the design unit's problem." A technician said.
If this problem occurs in other ships, then they can definitely blame the designers. After all, the failure to reach the speed was originally a design problem, but now, they cannot blame it.
"There must be nothing wrong with the design. The drawings are mine..." Ma Guoqiang swallowed: "We have to find the reason from ourselves. Everyone then thinks, what other problems are there that will cause the speed to be unable to be reached?"
"If it were a previous ship, we might be able to feel something based on experience, but now, this is the first time we build this catamaran. Who knows what the problem is."
"Yeah, let's find a designer to help!"
Designer to help? How could it be possible? The designer of this ship is Qin Tao. How could he come to solve the problem for them? Even if he came, he didn’t know how much consulting fees would be required.
"You think, if we narrow the sheets on both sides, will it reduce the resistance of seawater?" a technician said.
Ma Guoqiang's eyes immediately lit up.
If you look at the development of warships, you can see that early warships had a relatively large length-to-width ratio. Such warships looked slimmer. The advantage was that they had low resistance and were easy to reach high speeds.
Early warships were all designed in this way. For example, the domestic Type 051 destroyer is 132 meters long and 12.8 meters wide. Divide the two and it is 10.3. The American Perry-class frigates, Spruance-class destroyers, Tikande
The length-to-width ratio of the Roga-class cruisers reaches more than 10.0.
However, this kind of slender hull has a small internal space, making it inconvenient to arrange more equipment. At the same time, it shakes violently in the waves, making the crew very uncomfortable. Therefore, in the later period, with the development of ship power, this value became
It started to gradually decline.
The length-to-width ratio of the domestically produced Type 056 frigate is approximately 7.4, the value of the Type 054a frigate is approximately 8.4, and the value of the Type 052d destroyer is approximately 8.3. The aspect ratios of the Burke-class destroyers and Zumwalt-class destroyers are both set at 7.6.
about.
Therefore, later warships appeared to be relatively bloated, with fat hulls, less violent side-to-side rocking, and larger space.
If a warship cannot reach speed, it is easiest to slim it down. Now for this catamaran, we only need to reduce the width of the two hulls.
"No, the engine is placed inside the body. The width is just right. If the width is reduced, the engine will not fit in." Someone immediately rejected this plan.
No matter how they discussed, they could not find a solution to the problem. A few hours passed, and Ma Guoqiang only felt helpless for a while. He frowned: "You guys continue to think of a solution, I will go to the Ship Design Institute to hire experts."
The autumn wind blows, the leaves fall, and it is already a refreshing autumn scene in the north.
When Santana entered the gray building, Zhao Ling in the passenger seat felt a little emotional.
"Brother Tao, it's actually good for us to take the train."
"Take the train? There are no sleepers, and the hard seats are too crowded. It's not convenient for us to drive a private car. Besides, I brought so many gifts."
"This is not a private car, it belongs to a shipyard."
"What's the difference between the ones from the shipyard and mine? Well, even if there is a difference now, there will soon be no difference in the future." Qin Tao said.
Zhao Ling glanced at Qin Tao curiously, wondering what Qin Tao meant by this.
The car stopped at the entrance of the small courtyard. Qin Tao opened the trunk and took out the things inside. There was no shortage of tobacco, wine, sugar and tea. Of course, the more important thing was the wedding certificate and gift money.
Zhao Xiu'e did not go to work today and was resting at home. When she heard the noise outside, she rushed out and looked at Qin Tao with a smile: "Taozi, this engagement is just a formality, why bother taking so many things."
"That's what it should be. My father is busy dealing with many things at the shipyard, so he can't come over." Qin Tao said, "I will definitely bring my father and mother to visit the two elders before I get married."
"We now pay attention to new things and new things, and don't pay so much attention to etiquette."
"This is the gift money." Qin Tao had already put the gift into the room, and then took out the red gift money bag.
It's bulging inside.
"What is this?" Zhao Xiu'e took it and opened it. She was immediately surprised: "There are so many, no, no!"
In the 1990s, a typical engagement fee of fifty or one hundred dollars was quite a lot, but now, in this thick pile, there are seven or eight hundred-dollar bills for just four people!
"Here is eight hundred and eighty-eight yuan and eighty-eight cents, for good luck." Qin Tao said, "Nothing else, please accept it."
"You kid, don't bring the social trap into your home. We are marrying our daughter, not selling our daughter." At this moment, Wu Shengli came back with his handbag.
Qin Tao looked at his watch. Isn't it time to get off work yet? Is it appropriate for you to come back so early?
Facing Qin Tao's inquiring gaze, Wu Shengli said: "Tell me, what good things have you done? Someone wrote a report letter and the report came to the capital!"
This chapter is not finished yet, please click on the next page to continue reading the exciting content! "What?" Qin Tao was very curious: "Am I famous?"
"Humph, some people say that your factory gives out bonuses at the end of the year, and you gave yourself 20,000 yuan. Is this true?" Wu Shengli said.
"have.
"
"Twenty thousand is enough to put you in jail for several years. Are you too bold?"
"I gave a bonus of 1,000 to ordinary workers, and another 1,000 bonus after working during the Chinese New Year. Ordinary workers can get 2,000, and I, the biggest contributor to the shipyard, can get 20,000. Why not?" Qin Tao said.
.
Seeing Qin Tao's confident look, Wu Shengli shook his head: "When we do our work, we must be dedicated and don't ask for too much."
"Stop, stop." Qin Tao interrupted Wu Shengli: "In society, wealth is being created everywhere. You older generations can talk about dedication. We young people must be rewarded for their efforts. Similarly, my family
The old man said a lot."
"Wait a minute, you are fooling me like this, do you want me to work for the Navy for free? Tell you, no way! Just tell me how many good things I got for the Navy last time when I went to Lao Maozi's place? If the Navy doesn't give me three or five
The order for ten missile boats, after that, don’t expect me to make a voluntary contribution. The Navy will have to spend money to buy the good things I got from Lao Maozi!”
"Brother Tao, why are you talking to my dad?" Zhao Ling was a little anxious. Have you forgotten what you came here for? Don't forget the business!
"Oh, I'm sorry." Qin Tao was stunned.
"You, really, Taozi is here to propose marriage, what are you talking about?" Zhao Xiu'e also came out to smooth things over.
"It's not time to get off work yet. I came back to talk about business. Taozi, come with me to the study!"