Open an aircraft carrier to fight against Japan

In the huge waves, the hull only shook slightly, and several experts were stunned. What this means is very clear. Since the hull can be so stable in the waves, the artillery is easily affected by the waves. Smaller, the shells can be hit more accurately.

Lin Yuan blew a whistle, and the waves gradually stopped. Lin Yuan pushed up a few switches in the cabin, and the "buzzing" sound also stopped. Lin Yuan led everyone back to the shore and asked: " Now, we are going to visit the next site, this time the number of people can not be too many, only three people."

The six people discussed it, and finally three people came out and followed Lin Yuan into another small boat. There was actually a turret on this boat. Lin Yuan pointed to the cannon on the turret and said with a smile: "This is a cannon. There is a cannon model, everyone can try to operate it.”

An Englishman stepped forward and asked, "Is there anything special about this gun?"

Lin Yuan pointed to the scope erected next to the cannon and said, "Just try it out. This is the scope of the cannon. You can use it to make a direct aim. Aim the cannon at the target on the shore. You can do it." ?"

The Englishman walked to the side of the scope, moved his eyes to the front of the eyepiece, and adjusted the position of the cannon. Because it was a model, the cannon body was made of wood, so the cannon was very light and it turned very briskly. The British stopped After finishing the work in hand, he said, "Jing to Jing, there is no problem. Is there anything special about this artillery?"

Lin Yuan did not answer directly, but said: "There are no waves in the pool, it can basically be regarded as still water, and now I want to improve the sea conditions." After speaking, Lin Yuan blew a whistle, and the impeller by the pool started to rotate again, setting off a There were waves.

Lin Yuan said, "Now try to aim again."

The British held the handrail tightly, his face was pale, and he said with a smile, "Don't be kidding, the ship shakes so much, how can you aim accurately!"

Lin Yuan moved a switch on the side of the turret, and there was a familiar "buzzing" sound under the turret. The British laughed and said, "If the stabilization technology of the ship just now is applied, aiming will naturally not be a problem."

Lin Yuan smiled again: "Now let's move the boat, I wonder if you can complete the aim?"

The British said: "The moving target is against the static target. I have not been trained as a naval artillery, so it is difficult to accomplish this kind of aiming."

Lin Yuan said: "Don't be too busy saying that you can't, you might as well try it." Then Lin Yuan picked up a red flag and waved it towards the shore. Ten strong men took paddles, walked onto the boat and started paddling. With the oars up, the boat slowly moved towards the distance, but the British found that the turret turned slowly, and the muzzle was still aimed at the target on the shore!

The British man leaned in front of the scope, put his eyes on the eyepiece, and was surprised to find that the scope was still aimed at the target without much movement. The British said in surprise, "How did you do this?"

Lin Yuan smiled and said, "This is the secret of our Ryukyu Fleet's artillery accuracy!"

When the British wanted to ask again, Lin Yuan had already left the boat with his people and returned to the shore. Lin Yuan was not in a hurry to answer everyone, and said that it was already lunch time, so everyone went to eat first.

In the afternoon, Lin Yuan disappeared again. He arranged another sightseeing tour for the envoys from the four countries. This time he visited the "15 Years of Blood and Tears: 1879-1894" theme memorial hall. The criminal evidence, the evidence of forcing the Ryukyu people to join the Japanese army and participate in the war of aggression, etc., fully illustrate the cruelty of Japanese colonial rule.

The envoys from the four countries originally thought that Lin Yuan would make another presentation in the evening, but they didn’t expect to be arranged to watch a traditional Ryukyu song and dance performance in the evening. Everyone survived the whole night anxiously, and the next day, Lin Yuan finally made a presentation.

In the morning, they were taken to the room where the movie was watched. A large table was set up at the front desk, and Lin Yuan was already sitting behind the table. When everyone was seated, Lin Yuan stood up and said, "I believe everyone already wants to know We have shown the principle of the content, and today I will solve this mystery for you.”

As he spoke, Lin Yuan took out a globe-like object from under the table. In the middle was a disc that was horizontal to the table. Outside the disc was a vertical ring. The disc was connected to the ring through a shaft. , the outside of the ring is a horizontal ring, the inner ring is also connected to the outer ring through a shaft, the outer ring has a shaft, and it is connected to the base through a bearing, the inner ring, the outer ring , the geometric centers of the disks intersect at the same point.

Lin Yuan smiled and said, "I don't know if any of you know about this thing?"

Seeing everyone shaking their heads, Lin Yuan said, "This thing is called a gyroscope." The gyroscope was manufactured in 1875, but it was used to verify the rotation of the earth, so not many people know about it. .

Lin Yuan turned on a switch, and the disk made a "buzzing" sound and began to rotate at a high speed. Lin Yuan asked, "If I shake the base, how will the axis of the disk change?"

The people off the court are all masters of physics, and a few have said: "The axis will keep its spatial orientation and will not change."

Lin Yuan nodded, pointed to the axis of the outer ring, and said with a smile: "If I hang a heavy object on this axis, what will happen to the gyroscope?"

After a while of discussion, the people in the audience said: "The axis of the outer ring will not sink down, but the axis of the inner ring will turn at an angle."

Lin Yuan said: "Everyone has calculated the two major characteristics of the gyroscope, one is the fixed axis, and the other is the precession. Now, let me explain to you what we have seen today. First of all, the ship in For a ship that remains stable in the waves, think about it, if the ship is fixed on the axis of the gyroscope, will the range of its change be very small when the ship is pushed by the waves?"

Everyone nodded as if realizing something, and Lin Yuan said again: "There is also the cannon that can automatically aim at the target. When the ship moves, the axis of the gyroscope will change. If this axis is connected to a sliding rheostat , when the position of the shaft changes, the resistance value changes accordingly, and we connect this sliding rheostat to the circuit, and the change in resistance is converted into a change in voltage or current."

"Afterwards, this voltage or current is sent to the motor, and then the motor will stabilize the cannon at its original aiming position according to the current value. Doesn't this allow the cannon to automatically aim at the target?"

The eyes of a few people below have started to shine, Lin Yuan thought: "These things are enough for you to work for a long time, the gyroscope has installation errors, with your current level of machining, you want to make Accurate gyroscopes are still relatively difficult."

At this time, someone asked: "How is the shaft of your gyroscope connected to the ring? What kind of bearings are you using?"

Before the words fell, someone stood up and asked: "You said that the motor adjusts the position of the cannon according to the change of the current. Can you be more specific?"

Lin Yuan shrugged his shoulders and said with a smile, "No comment!"

Seeing Lin Yuan's appearance, everyone was not too disappointed. For them, a breakthrough often just needs an inspiration.

Lin Yuan thought: "This problem is solved, tomorrow, the problem of high-speed performance will be solved."