To put it bluntly, hydraulic technology uses liquid as a transmission rod to transmit force.
For example, normal transmission uses gears, rods, etc. Things like gears and rods themselves are always limited in the force they can withstand due to their shape.
But hydraulics are different!
In the hydraulic system, in addition to the input pressure and output pressure, the pressure-bearing part of the machine itself is mainly the pipe containing the liquid.
Of course, an iron pipe will bend when hit on a stone, but this is different from things like transmission rods and gears.
When smashing an iron pipe, the iron pipe itself bends in one direction, and the gears, transmission rods and belts are actually the same.
But in the hydraulic system, if this liquid wants to burst the pipe, it needs to exert force in all directions on the inner wall of the iron pipe - at a glance, you can see that the force-bearing area is much larger than the scene of smashing the iron pipe.
The larger the force-bearing area, the smaller the pressure will naturally be, and the destructive force will naturally be insufficient, so this component will not be easily damaged.
It can transmit huge pressure and is not easy to break. The effect can be imagined naturally.
At the same time, more importantly, hydraulic pressure can adjust the input and output pressure, just like a gearbox, which is the key to large-scale use in later generations. However, at this stage, Li Sheng does not use such advanced principles. Now it mainly
As a transmission mechanism, this is obviously much lighter and easier to use than a set of gear systems.
Of course.
It doesn’t mean that research and development will be easy once you have the principle. It’s just like in later generations, when microphysics was not available, it was easy to make chips. There is always a big gap between theory and practicality. The more high-end the technology, the more amazing it is.
A section of.
The hydraulic pressure this time was of course not the best in Li Sheng's era, but anyone who has seen an excavator will have seen the shiny hydraulic rod on the arm of the excavator.
As for the hydraulic lever.
Of course, it is impossible to have it ready-made here in Li Sheng, and at the same time, it is impossible to customize it from the steel plants in Qiongzhou Island or Panyu. This does not mean that Qiongzhou Island and Panyu have just started to build steel plants and have not yet achieved any results, so they cannot be made.
Hydraulic rod, but this thing does have certain requirements on craftsmanship, which cannot be done by ordinary craftsmen.
In addition to being skilled in craftsmanship, more importantly, you also need experience in precision casting.
It is true that there are good craftsmen in the Panyu area, but high-grade workpieces cannot be made by craftsmen. They also need to have a certain understanding of subtle weights and measures such as "centimeter" and "millimetre", and more importantly,
You have to be able to use a vernier caliper.
The appearance of the vernier caliper in China is actually not just a day or two. So far, the earlier established steel plants and various other factories have basically become accustomed to this tool, and craftsmen have usually mastered it.
understand its principle.
Nowadays, in addition to the vernier calipers made by Li Sheng, there are many self-made tools of this kind on the market in Datang.
All in all, it can be said that Datang now has some industrial accumulation.
This kind of accumulation does not mean aircraft and cannons, but that the most basic craftsmen have gradually mastered more and more technologies and supporting process improvements, and have also mastered more and more basic tools.
During this research, Li Sheng couldn't help but think of what an elderly teacher said when he was studying in his previous life. The key to industrial upgrading is not to create extraordinary products, but in the process of creating these products.
, each individual masters more and more technologies, and the income per hour is getting higher and higher. This is the core of industrial upgrading, and everything else can be ignored.
The economic principles involved were a bit troublesome for Li Sheng at that time.
After all, I am studying science and engineering, and you told me this about the elective courses I took.
But now, Li Sheng has an intuitive feeling.
Although there are many skilled craftsmen all over the Tang Dynasty, there is only one place where you can actually get hydraulic rods.
Datang, Weapons Research Institute!
In fact, it is not a hydraulic rod.
Instead, Li Sheng directly designed a "peculiar-shaped artillery piece", sent the blueprint to Chang'an, and threw it to the Military Research Institute.
Then I got this unprecedented airdrop!
Of course, Li Sheng's hydraulic rod was not really air-dropped, but was delivered by horse along the post road.
In this era, express delivery is true, but it is relatively slow!
This made Li Sheng, who recalled his past life experiences and the developed transportation and logistics system in his previous life, find it very difficult to bear. Fortunately, the weather was good these two days when the goods were delivered, so Li Sheng was in a very beautiful mood.
Hehe, Datang Logistics does not have airdrops now, but what about in the future? Maybe there will be one in two years, hehe.
Thinking of this, Li Sheng suddenly felt that the role of this airship was not only to carry passengers for tourism.
It seems like it can carry something else!
Such as goods and so on.
In short, the special high-end artillery barrel, no, the hydraulic rod finally arrived. Li Sheng happily looked at the workmanship, and then started working on the remaining parts of the airship.
What Li Sheng had to admit was that airships were really difficult to handle.
Even if this thing exists in later generations, it is a technology that only appeared after a long period of time passed after the start of the industrial revolution.
In other words, it is a very new thing, and you can imagine how complicated, troublesome and difficult it is.
In addition to hydraulic parts, Li Sheng also has to study the throttle system, because this is not something that can be done in the past. It is just a military reconnaissance anyway, and it does not need to be so luxurious and high-end, right?
But this time it was different, because since it was carrying passengers, it was necessary to consider the service quality. In other words, Li Sheng had to develop a more sophisticated throttle system. And in addition to this, he also had to estimate the riding experience.
Do I still need shock absorbers?
Then, because the airship walks in the sky, it obviously needs a balancing device, that is, a gyroscope. This is really a bit difficult.
Even in later generations, gyroscopes were highly sophisticated and top-notch technology.
With the island nation's impressive technological accumulation in the 20th century, higher-end gyroscopes still had to be imported from North America.
This is also the reason why the island country's industry seems to be developed, but in fact it is very abnormal that there is no aviation industry.
If others don't give you these top-notch things, then you can't even think about doing it yourself.
Of course, China is not subject to such restrictions. As long as you remember to do it, you can get it. However,
Li Sheng didn't think he could have a chance with academicians of the two academies.
And more importantly, even if you don’t talk about contacting academicians from the two academies and just make the most basic gyroscope - this is not that difficult. Even the basic model can be mass-produced by island countries - but the difficulty is still the same.
