The train brake problem is a difficult thing to solve.
It is too heavy, has too much inertia, and cannot stop suddenly like a car.
The technician discovered that there was a problem with the brakes, but there was no way to fix it. Li Zhen also knew that the braking effect of holding the wheel could only be moderate, but not perfect. But he had no better way to deal with this problem.
The only option is to lock the wheels.
"Master Li, do the wheels need to be redesigned?"
"unnecessary."
"I think the friction between the wheels should be increased. The friction between the steel wheels and the rails is too small. Even after locking the wheels, it still keeps moving forward. Does this mean that the train will reach 80 miles per hour? Sometimes, the braking even has to be completed several kilometers in advance?”
Li Zhen hesitated for a moment: "If nothing else happens, that's it."
"What should I do if there is an emergency? What if someone suddenly breaks into the train tracks?"
Li Zhen said: "Actually, you have all overlooked a problem. The braking of the train should not be done by the front of the train. A series of carriages must be hung behind the train. If the braking effect of the front of the train is not good, then all the carriages and hundreds of steel wheels will be damaged. What about locking brakes? You are wrong about this concept. You always think that the train's braking depends on the front end of the train. This is unscientific. How can a front end of the train resist such a strong inertial force?"
Everyone suddenly realized.
"Oh, I see.:"
"If you put it this way, if the wheels of all twenty carriages are locked, that means nearly a hundred wheels are locked. In this case, the friction force will be doubled."
"But, is there any other way?"
Li Zhen shook his head: "No."
"But what should I do if there is an emergency? Can I just watch it hit? It would be too dangerous if the train hits something. The front of the train hits it first, and the inertia of the dozens of cars behind it is so amazing? All the power rushes to If it's the front of the car, the people in the front of the car will definitely not survive. Maybe the train will derail."
Li Zhen drew a few lines on the railway map: "So, the railway tracks must not be exposed to the open air. Wire mesh should be pulled up on both sides of the railway tracks to prevent wild animals and residents from intruding. Set up at regular intervals. Guard booths, regularly inspect the rails, and drive away nearby wild animals. The steel wire mesh must be pulled up, and must be strictly guarded."
"Also, some train tracks have to pass through residential areas. Then checkpoints should be set up at the intersections to prohibit passage when the train comes. Use a side approach to solve the problem of train braking. Only in this way is the best solution Way. There is no more perfect idea for train braking.”
“…”
After Li Zhen finished speaking, he glanced at the damaged locomotive pulled by a tractor-trailer in the distance: "The power is still a bit weak. First produce the regular locomotive, hook up the carriage and then test it again. There is no problem with the rails, this The principle is fine. Let’s wait for the finished product to be produced in the factory before we can figure out how to solve other problems.”
"Yes, Master Li."
Li Zhen smiled and got into the car: "Let's go to the airport. Today is also the day to test Peng Shi."
"Master Li, General Administration Jiang is arriving soon, and he also wants to watch the Peng-style test flight."
"Who is General Administration Jiang?"
"Jiang Tianqi, the former emperor of Beizhou Jiang Tianqi. Now Jiang Tianqi is the chief administrator of the New Kyushu Transportation Administration. He is highly regarded by Du Taiping."
Li Zhen raised his eyebrows, thinking of this guy.
I once met with myself and made the Ten Thousand Years Financial Group in my hands earn several tons of gold. Then he was placed under house arrest in Quancheng County. Unexpectedly, he has become an important member of the party now.
He smiled and got into the car: "Okay, wait for him. Let's see what this old acquaintance looks like now."
"Let's go."
“…”
'Didi didi'
The leading car whistled.
A convoy of more than a dozen vehicles from the Kyushu Academy of Sciences evacuated from the Dafengtai Railway Station and headed towards the Dafengtai Airport.
The people did not disperse. After watching the train experiment, many people also wanted to watch the Peng take off.
Everyone is full of curiosity about the legendary large aircraft. If Peng Shi succeeds, I am afraid it will usher in a new era.
An era that has completely brought the world closer. From now on, there will be three types of transportation - sea, land and air.
"This train is just useless. I heard that there is a serious problem with the brakes. It can't stop, and the brakes have to be hit."
"Forget about the train, let's go watch the plane. The highlight is the Peng style."
"I heard that this Peng type will sail thousands of miles in the future to meet the emperors of various countries. Let's go and see it too."
"It is said that the Peng type can seat thirty or forty people. It is also more stable than the Grasshopper and uses dual engines."
"If you don't understand, don't talk nonsense. The Peng type is a variant of the Grasshopper. Its scientific name is the transport aircraft."
"How great would it be if we opened airports everywhere in New Kyushu? There are Pengshi all over the sky, then New Kyushu will be completely developed. You don't need to take a few weeks of driving to go anywhere. You can get there in a short time by plane."
“…”
Arrive at the airport. The place is already crowded with people.
The Kyushu Academy of Sciences naturally has its own pergola. The pergola is simple but heavily guarded. There are all important people inside, and it is also the place with the best view.
When Li Zhen arrived, the Peng plane had already been transported and was wrapped in a huge canvas. Just waiting for Li Zhen's order to take off at any time.
"Master Li, do you want to start warming up the engine now?"
Li Zhen looked at his watch. It was already three o'clock in the afternoon. At this time, the sky was high and the clouds were clear, which was the best time to see. There is no harsh glare at noon, nor heavy clouds in the afternoon.
"etc."
Looking back, Li Zhen said again: "Send me a telegram and ask where General Jiang is?"
Liu Jinghong shrugged his shoulders, with a somewhat disdainful expression: "Master Li, why bother waiting for such a small role? Why does the Kyushu Academy of Sciences care about the Kyushu Party? There is no need to wait for him, which lowers his status. Let's just test-fly ours. "
Li Zhen smiled and said, "We have to wait."
"Why wait?"
"The Pengshi has only been developed. Whether it will be produced or not is still the government's final decision."
"It is the Kyushu Academy of Sciences that has the final say."
Li Zhen frowned: "The Kyushu Academy of Sciences has no energy for mass production. Shouldn't the Aviation Academy focus on development? Designing aircraft is an art. What's wrong with you always thinking about standing still on the same work? "
Liu Jinghong opened his mouth and was speechless. After a moment, he said with a sneer: "That's right."
Everyone around him was also silent. Although Li Zhen's tone was calm, everyone felt that Master Li was angry.
What are you getting angry about
He was angry because the aviation institute had the idea of standing still.
Or was he angry because of Liu Jinghong's dismissive attitude towards the government
neither.
Li Zhen was just angry because of the mentality now common in the Kyushu Academy of Sciences.
They didn't feel it themselves, but Li Zhen felt it definitely. Most of these people are a bit bloated now, and it is difficult to keep their normal mind...
If this kind of normality in dealing with people is missing. It's dangerous for them.
(End of chapter)