Chapter 144 Is the speed not up to the standard? Where is the pit?

   "Xiaoling, you've lost weight. You really don't regret that your belt is getting wider and wider. You're getting haggard because of something!" Qin Tao said to Zhao Ling after seeing her.

   "Fuck you, they are all busy at work, who would think about you? Stop being 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 bit."

   "It's almost the same, come on, let's make a boo first!"

   Boo? what is this? Zhao Ling really hadn't heard of it before, and then, she felt her lips wet for a while, and with a bang, she finally understood.

   "Hey, be careful not to be seen." Zhao Ling blushed and looked around.

  It was afternoon at this time, and everyone was working. The road here was empty, and there was no one there.

   "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 that Qin Tao was joking, Zhao Ling was still very sweet in her heart.

   "The second missile boat has been launched, and the sea trial is going well." Zhao Ling said, "Aren't you in a hurry for follow-up orders?"

  Qin Tao smiled: "It's a new trick, and it's eaten all over the world. Only our factory can manufacture this kind of missile boat. Other factories simply can't take this hot potato."

   "You are very confident."

  The two continued to move forward.

   "Xiaoling, if the navy doesn't give us follow-up orders, will you, the military representative, leave too?"

"Um."

   "Then take advantage of this gap, let's go to the capital together, and I will formally propose marriage to your family, how about it?"

   "Huh? Mmm, mmm, mmm!" Zhao Ling nodded again and again, this was what she was looking forward to the most.

  Although Qin Tao kept talking about him and didn't explain his real purpose of coming back, Zhao Ling didn't care anymore.

  Under the same blue sky, Zhongjiang Shipyard.

Three ship production lines including 30,000-ton berth, 1,500-ton variable **** slide, and small boats show the strength of this shipyard. They are a backbone enterprise with an annual production capacity of 200,000 deadweight tons of ships, and they are also a subsidiary of CSIC. , they are proud.

   And today, they also ushered in a new moment.

  A brand new missile boat, all construction work has been completed.

Looking at the large missile boat and the pieces on both sides, Ma Guoqiang was very excited. He said to Wang Gang, the military representative on the side: "Representative Wang, this is the strength of our Zhongjiang Shipyard. We can completely , Complete the construction of the missile boat! It is three times faster than the Mingzhou shipyard!"

  It is normal for them to be fast, because in their warehouse, various radars, anti-ship missile launch tubes, etc. are all ready-made. Those weapon systems that were originally intended to be prepared for the next few 037-class missile boats can be directly installed on the 022 missile boats.

   "Yes, Zhongjiang Shipyard has been building missile boats for our navy, and the navy is quite at ease with you. Now, let's start sea trials!"

   "Yes, the sea trial begins! Let us all see how fast this boat can run, it will create a miracle!" Ma Guoqiang said.

  More than a dozen shipyard technicians and navy sailors boarded the ship, and quickly started the motor. Amidst the roar, the missile boat began to slowly leave the dock.

  The four water jet propellers are working at full power, constantly pushing the water flow, and the missile boat is like an arrow leaving the string, soaring forward.

   Ten verses, twenty verses, thirty verses, forty verses!

  The missile boat continues to sprint, but it can be seen that the acceleration of the missile boat has begun to slow down.

  Forty-one, forty-two, forty-three, when the missile boat reached a speed of forty-three knots, it could no longer accelerate.

  The people watching on the pier were all experienced. Even if they couldn't see the speedometer, they would know that the speed of the missile boat at this time could not reach the design target at all.

   "What's going on?" Ma Guoqiang's expression changed suddenly: "Keep accelerating!"

  The missile boat of Mingzhou Shipyard can run to more than 50 knots! How come the missile boats of their Zhongjiang Shipyard can only run to more than 40 knots?

   "The ship has reached the maximum speed and can no longer speed up. Moreover, it is still going downstream."

  When Ma Guoqiang heard the news from the sea test personnel, his heart skipped a beat.

  Any ship has a maximum speed. The faster the speed of the ship, the greater the resistance of the water flow. Moreover, the relationship between speed and resistance is not directly proportional.

  At the tenth verse, the two form a primary relationship, at the 20th verse, it is approximately a quadratic relationship, and above the 30th verse, it is a cubic or even higher relationship.

  At the current speed, the resistance of the ships is also huge, and all their power is used to overcome the resistance of the river. Therefore, it is impossible to continue to speed up.

   This is still taking advantage of going downstream. If going upstream, the speed may not exceed forty knots!

how so?

  Wang Gang, the military representative on the side, also changed his face: "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."

On Ma Guoqiang's back, cold sweat broke out suddenly, and he said quickly: "Representative Wang, please rest assured, we will definitely hand over qualified missile boats to the troops. If the speed cannot be reached, we will immediately solve the problem." Research to solve!"

  When the missile boat came back, everyone was tense, and Ma Guoqiang immediately called the technical staff for a meeting.

   "It's definitely not a welding problem. We welded completely according to the design drawing without any changes." A technician said: "The lack of speed has nothing to do with us!"

   "The power system is imported, whether it is an engine or a water jet, unless, unless..."

   "Unless what?"

   "The engine power is not enough, or the model of the water jet is wrong."

   "How is this possible? It is clearly written on the drawing, and the reserved position is completely appropriate."

   "Immediately call the Navy for verification!" Ma Guoqiang said.

   A few minutes later, the caller returns.

   "That's right, the model is exactly the same. It has been equipped with the Navy's missile boat. It uses 2 MTUV16396TE74L power diesel engines, each with an output of 6800 horses, and 4 jet propellers imported from the UK."

   "What's going on? The same power, same shape, why our missile boat can only run to 40 knots, tell me, what's going on?" Ma Guoqiang was anxious.

   "For this, I'm afraid I can only find the design unit. If the speed cannot be reached, it is the matter of the design unit." A technician said.

  If other ships have this kind of problem, then they must be able to blame the designers. After all, the lack of speed is originally a design problem, but now, they can't blame it.

   "The design is definitely fine, and the drawings are mine..." Ma Guoqiang swallowed: "We have to find the reason from ourselves. Everyone then thinks, what is the problem that will cause the speed to not be reached?"

   "If it was the 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 where there is a problem."

   "That's right, let's ask a designer for help!"

   Designer help? How is it possible, the designer of this ship is Qin Tao, how could he come to solve their problems! Even if I come, I don't know how much the consultant fee will be.

   "You said, if we narrow the sheets on both sides, will the resistance of seawater be reduced?" A technician said.

   Ma Guoqiang's eyes lit up immediately.

If you look at the development of warships, you can see that the early warships had a relatively large aspect ratio (simple understanding, the ratio of the length to width of a warship.) Such warships look slender, and the advantage is that the resistance is small, and it is easy to achieve high speed.

Early warships were all designed in this way. For example, the domestic Type 051 destroyer is 132 meters long and 12.8 meters wide. The difference between the two is 10.3. The American Perry-class frigates, Spruance-class destroyers, and Ticond The aspect ratio of Roga-class cruisers is above 10.0.

However, this 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. began to decline gradually.

  The aspect ratio of the domestic Type 056 frigate is about 7.4, the value of the Type 054A frigate is about 8.4, and the value of the Type 052D destroyer is about 8.3. For the Burke-class destroyers and the Zumwalt-class destroyers, the aspect ratio is set at around 7.6.

   Therefore, the later warships appeared to be more bloated, the hull was fat, the side to side shaking was not violent, and the space would also become larger.

   For a warship, if the speed cannot be reached, it is the easiest to slim it down. For this catamaran, it is only necessary to reduce the width of the sides of the ship.

   "No, the engine is placed inside the body, and 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 couldn't find a solution to the problem. After several hours passed, Ma Guoqiang only felt helpless for a while. He frowned: "You guys continue to think of a way. I'll go to the Ship Design Institute to invite experts."

  The autumn wind blows, and the leaves fall. The north is already a scene of crisp autumn.

  When Santana entered the gray building, Zhao Ling in the co-pilot was a little emotional.

   "Brother Tao, it's actually pretty good for us to take the train."

   "Take the train? There are no sleepers, and the hard seats are too crowded. It's not as convenient as our 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 shipyard's and mine? Well, even if there is a difference now, it will soon be the same in the future." Qin Tao said.

  Zhao Ling glanced at Qin Tao curiously, not knowing what Qin Tao meant by that.

  The car stopped at the gate of the small courtyard. Qin Tao opened the trunk and took out the contents, including cigarettes, alcohol, sugar and tea. Of course, the most important thing was the marriage certificate and gift money.

  Zhao Xiu'e didn't go to work today. She was resting at home. When she heard the noise outside, she rushed out to meet Qin Tao and looked at Qin Tao with a smile: "Taozi, this engagement is just a formality. Why take so many things."

   "This is what it should be. My father is busy with a lot of things in the shipyard, so there is no way to come." Qin Tao said: "Before I get married, I will definitely bring my parents to visit the two elders."

   "Now we pay attention to new things and new arrangements, not so much etiquette."

   "This is gift money." Qin Tao had already put the gift into the room, and then took out the red gift money bag from it.

   It is bulging inside.

   "This is it?" Zhao Xiu'e took it, opened it, and was shocked: "There are so many, no, no!"

  In the 1990s, 50 or 100 yuan was quite a lot for an ordinary engagement, but now, there are seven or eight hundred-yuan bills in a thick pile of four-headed ones!

   "Here is eight hundred and eighty-eight yuan and eight anise eight cents, for auspiciousness." Qin Tao said: "No other meaning, please accept it."

   "You boy, don't bring the society's tricks into your home. We are marrying our daughter, not selling our daughter." At this moment, Wu Shengli came back with a handbag.

  Qin Tao looked at his watch, it's not time to get off work, right? Is it right for you to come back so early?

  Facing Qin Tao's questioning eyes, Wu Shengli said, "Tell me, what good things have you done? Someone wrote a report letter, and the report came to the capital!"

   "What?" Qin Tao was very curious: "Am I famous?"

   "Hmph, someone said that when your factory pays a bonus at the end of the year, you paid yourself 20,000 yuan. Is this true?" Wu Shengli said.

"have."

   "Twenty thousand, enough for you to spend several years in prison, aren't you too bold?"

"I gave a bonus of 1,000 to ordinary workers, and another 1,000 bonus after going to work during the Chinese New Year. Ordinary workers can get 2,000. I, the biggest hero of the shipyard, get 20,000. What's wrong?" Qin Tao said .

  Looking at Qin Tao's upright look, Wu Shengli shook his head: "When we do our work, we must have dedication and don't ask for too much."

"Stop, stop." Qin Tao interrupted Wu Shengli: "Wealth is being created everywhere in society. You, the older generation, can talk about dedication. We young people, we have to pay back for our efforts. Similar words, my family The old man said a lot."

"Wait, you fooled me like this, do you want me to work for the navy for free? Tell you, no way! Just say how many good things I got for the navy when I went to Lao Maozi last time? If the navy doesn't give me three or five An order for ten missile boats, after that, don’t expect me to donate voluntarily, the navy will have to pay for the good things I got from the old man!”

   "Brother Tao, why are you talking to my dad?" Zhao Ling was a little anxious, have you forgotten what you are here for this time? Don't forget about business!

   "Oh, I'm sorry." Qin Tao hesitated.

   "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. I came back to talk about business. Taozi, come with me to the study!"

  (end of this chapter)