Chapter 66: Super cavitation thruster!

Angel Beach Resort, Fira Beach Hotel.
Open-air roof and large infinity pool.
Jiang Cheng swam back and forth comfortably in the swimming pool, then surfaced and lay on his back on a beach chair.
He picked up the coconut juice next to him and took a few sips.
Immediately afterwards, Jiang Cheng took out his mobile phone and opened the Island Tycoon app.
The successful promotion of flying cars allowed the valuation of Emerald Island to directly exceed the $300 billion mark!
And Jiang Cheng's island owner level has also come to Lv3.
In this way, the building blocks and other modules of the system will all be unlocked, making Jiang Cheng very much in his heart.
However, at this time, Jiang Cheng did not care about other things, but locked his eyes on a black technology store that suddenly appeared.
The so-called black technology store, aptly named, is full of technologies or products that can be achieved by non-humans with current knowledge and scientific level. Every item can cause the world to shake.
However, there are only a few technologies and technologies in the system store at this time, including "zombie" IoT, "slug" superglue, and so on.
Jiang Cheng glanced over it casually, and was not too interested, so he focused on the last product.
Super cavitation pusher!
Seeing this, Jiang Cheng's eyes shone like searchlights.
He has actually heard of this technology a long time ago, but it has always been a technology in science fiction. Even if some developed countries are studying it, there is still a long way to go before it can be put into practice.
The so-called "supercavitation" is actually a physical phenomenon.
When the speed of an object in the water exceeds 185km/h, a strange large water vapor ditch will be formed at its tail to wrap the part of the object in contact with the water. At this time, the medium in contact with the object changes from water to water vapor, thus resistance Significantly reduced, only 1/800 of water, this is the "supercavitation phenomenon".
There are generally three ways to form "supercavitation".
One is to increase the speed of the vehicle.
Second, reduce the pressure of the flow field.
Third, at low speeds, artificial ventilation is used to increase the internal pressure of the empty gun.
The first two methods are formed by natural supercavitation, which is extremely difficult to achieve. The last method is the one that can be achieved by manpower.
The "supercavitation technology" uses the third method to artificially move around objects in the water to release some gas, which greatly reduces the resistance to movement.
In theory, a torpedo made with supercavitation technology can reach a terrifying underwater speed of 1549m/s, which is even more than 3 times the speed of sound in the standard state!
Can be called extremely abnormal!
Just imagine, if we vigorously develop and manufacture this supercavitating fish, what else in the world can intercept underwater torpedo attacks? !
This technology is definitely a nightmare for all moving objects on and under water!
Of course, this is only in theory, and there are also big technical problems, which have not yet been put into practice.
However, this can be said to be a development goal and the direction of future ship development.
The problem of water resistance has always been the biggest problem restricting the development of the shipping industry.
The supercavitating technology allows the world to see the bright future. As long as this problem can be solved, it will definitely help the development of the shipping industry, and it will even be no problem to defeat the aviation industry from now on.
Behind this technology, there are amazing development prospects.
There was a fiery light in Jiang Cheng's eyes, and he felt that his chance to take off had come.
There are many application scenarios for supercavitation technology, including all kinds of ships, ships, and various underwater equipment. If this technology can be put into practice, it can even change it to some extent. this world!
Thinking of this, Jiang Cheng couldn't wait to open the introduction of the supercavitating thruster, and then began to browse.
It took a full ten minutes before Jiang Cheng looked away.
I have to say that the supercavitating thruster, a black technology product, can really be regarded as extremely abnormal.
According to the above introduction, this product can be directly applied to existing ships, which can greatly increase the ship’s moving speed. Of course, some power systems and operating systems must be adjusted accordingly, which will make the ship’s cost straight. Promote.
But even so, Jiang Cheng felt very satisfied.
You know, in the modern shipbuilding industry, the most difficult technical index to improve is speed.
Of course, this is related to the ship engine industry to some extent, but more importantly, it is the problem of reducing underwater resistance.
Therefore, in the current shipbuilding industry, in order to increase the speed, most of the methods are to reduce the weight of the ship, that is, through the development of some lightweight composite materials, to reduce the resistance of navigation in the water, so as to achieve the purpose of increasing the speed.
However, the effect of increasing speed by this method is extremely limited, and the cost is not low.
The emergence of supercavitating propellers has solved this problem well, which is definitely a subversive technology for the contemporary shipbuilding industry.
Jiang Cheng tapped his fingertips, and the three-dimensional model of the supercavitating thruster was clearly displayed before his eyes. At the same time, a series of related technical parameters also appeared.
The supercavitating propeller in front of me is a huge fusiform structure, with a long raised nozzle on the head, and a dark black paint on the surface, which looks very sci-fi.
【Name】：Supercavitating propeller
[Nature]: dedicated for ships
[Maximum speed]: 142 knots
[Cost]: $19.5 million
[Time-consuming]: None
[Evaluation]: The first-generation concept-level supercavitating thruster, the core of the future ship power system.
Seeing the cost of the supercavitating propeller, Jiang Cheng slapped his tongue and was shocked.
It has to be said that the cost of supercavitating thrusters is still extremely high.
As far as he knows, the cost of an ordinary transport ship is between US$30 million and US$5,000. Only a super-large natural gas carrier like LNg can cost more than US$100 million.
However, the cost of this propeller in front of us is as high as nearly 20 million dollars, and this does not include the power system and operating system that match it.
It seems that this so-called black technology is really not given for nothing.
If Jiang Cheng's shipyard uses this technology in the future, the cost of the ship will at least be more than doubled.
However, if you can get twice the cost of construction, in exchange for more than 3 times the speed, it seems to be very worthwhile.
When Jiang Cheng's gaze was set on the speed of the supercavitating propeller, an expression of excitement suddenly appeared.
In the modern shipbuilding industry, it is very difficult to increase the speed even by 1 knot, but the supercavitating propeller can reach 142 knots. This is really a miracle!
142 knots, which is 263 kilometers per hour, and this speed can almost catch up with the speed of land high-speed rail!