What is it, as long as you put your mind to it, there will always be different discoveries, Yang Wenli suddenly remembered that there is no decent wharf in Daming, and the smallest ship of 1500 tons may not be able to dock.

The wharves along the Yangtze River are all moored river boats, all of which are flat-bottomed boats, the largest is only 400 materials, with a displacement of 150 tons, so the waters near the wharf are very shallow, although the frigates are small, but they are also steel-armored ships, and the draft is relatively deep, and it is foreseeable that they cannot reach the shore.

What to do? Continue to load a small boat or two on board for ferrying? That's too lo, it's as funny as the emperor wearing a beggar's outfit.

Yang Wenli's wisdom is like the sea, and he had a flash of inspiration and thought of the famous bison hovercraft in later generations. When it is not pumping, it does not occupy volume, and it can be loaded with a few more.

Its power is also very simple, that is, two large exhaust fans (turbofans) are installed behind the buttocks, and by rotating the fan, you can control the direction of the hovercraft, and the fan uses electricity, and several sets of high-energy lithium batteries can solve the problem without having to develop complex power.

Of course! This kind of cottage hovercraft is certainly not as big as the bison hovercraft of later generations, and it can seat more than ten people at a time, so the technical difficulty is much less.

Yang Wenli planned to equip each frigate with four small hovercraft, and originally the traffic boats on the warship were all hoisted into the sea with booms, but the frigates designed by Yang Wenli had very small front and rear decks, and there was no room for them except for twin naval guns, so they were all designed as cabins.

Since this road is impassable, Yang Wenli thought of the dock landing ship of later generations, opened a door behind the buttocks, and took the dock to easily get on and off personnel and materials.

If only one door is opened at the stern, the change is not much, and it will not cause structural damage to the ship, this door is also very simple, similar to the lifting tail plate of the box truck in later generations, supported by a pair of hydraulic telescopic arms, and it will open at the touch of a switch, with a slope of 30 degrees to 45 degrees, which can be directly taken to the dock, up and down personnel and goods, and can also be taken into the seawater, as a fast entry and exit channel for hovercraft.

Of course! Since the main occasion is at sea, this pair of telescopic booms should not be exposed, otherwise the service life will be seriously damaged.

Therefore, this pair of telescopic booms can only be installed inside, which is fine, as long as the design is reasonable, and the lifting plate can be closed to prevent the waves from rushing into the cabin.

Yang Wenli was originally in charge of the design of the frigate, he had a full set of structural drawings, he said to do it, personally changed the design, and installed a hydraulic lifting plate in the second cabin below the stern deck.

The third deck below deck is the power compartment that does not need to be changed, and the stern of the second deck was originally a coal bunker, and he separated a passage in the coal bunker, which was bound to reduce the coal load of the coal bunker, so he shrunk the passenger cabin in front of the coal bunker by two sets and expanded the area of the coal bunker, so that the coal loading capacity could not be reduced, that is, the voyage range was not reduced.

The cabin below the deck is not a professional cabin, but a passenger and cargo dual-use, very empty, but there are a few more hooks for hanging hammocks, which is very easy to change.

This change is trivial to Yang Wenli, and he completed the task in three days.

Now only the task of developing a small hovercraft remains, although it is very simple, but it is also a system project, and a single research group cannot develop it.

The first is the power system, which is a pair of turbofans and high-energy lithium battery packs, which are in the hands of skilled technicians, just like a pair of ordinary fans.

It's just that he doesn't have any confidence in this high-energy lithium battery pack, this difficulty level has reached the top, and if you want to make a real thing, you can only rely on luck.

In addition to the power, only the main body of the hovercraft remains, which is rubber, which belongs to the scope of the chemical research group under the materials group, and the rubber originally had it, but the quality of the rubber used in this hovercraft is several grades higher, and it has to be developed from scratch, so he summoned the head of the chemical research team and gave him this difficult task.

The last is the refueling pump that quickly inflates the hovercraft, that thing is relatively simple, he has seen it in his previous life and used it, so he summoned Yang Liren, told him in detail the working principle of the refueling pump, and handed over the development task to him.

In fact, whether the frigate can be successfully developed is inseparable from the high-energy lithium battery, because the power generation efficiency of the steam turbine is very high, and it cannot be stored at all with ordinary lead-acid batteries, and it is very easy to cause fire and explosion.

At the same time, with the high-energy lithium battery pack, the steam turbine he developed is no longer an ordinary steam turbine, but a hybrid of coal and electricity, and has become an extremely advanced ship power system, and in some respects it will surpass the hybrid system of gas turbine and diesel engine in later generations.

However, without high-energy lithium batteries, his design of such an advanced coal-electric hybrid system would be like a castle in the air, which can only stay on paper.

In the end, there is still a lack of basic technology, which is modern, it is a matter of spending some money, and a lot of it is bought.

In ancient times, he could not buy it even if he had money, which forced him to be self-reliant. In the end, China became the only country in the world with a complete range of basic science and technology and industrial systems, which even the United States imperialism could not catch up.

The Far Eastern Kingdom is now also developing in this direction, and even surpasses it, because the Far Eastern Kingdom is far ahead of the world, and the good things it needs, all countries do not have, and it really has nothing to rely on.

"How? Has there been any progress now? Yang Wenli straightened out his thinking, and after the tasks were released, he went directly to the battery research group, and he lacked confidence in his questions, just hoping for a little progress.

"Your Majesty, there is still progress, and there are many achievements, such as electrolytes for lithium-ion batteries, cathode materials, lithium iron phosphate separator materials, and so on.

But there are still two big problems that have not been solved, this battery can not actually be practical, and the series of results we have achieved before are actually of little significance. ”

"What are the two big questions, you name them and listen to them."

There is a problem, Yang Wenli is not strange at all, after all, high-energy lithium batteries are proper high-tech in later generations, although with his guidance, it is not so easy to develop, so his tone is very kind, with a smile, as if discussing problems with colleagues.

"Your Majesty, the first big problem is the anode material, although Your Majesty directly said that it is a graphite-based material, but graphite is very soft and not strong enough, so it can't be made as a negative electrode material at all.

Graphite material is the only material that can withstand strong current charging, and ordinary metal materials are not good.

The second major problem is the isolation film material, which requires that it can pass through the electrons but is waterproof, which requires extremely fine holes, which involves the molecular field, which is very difficult, and it is difficult for us to develop it in a short time.

As long as they have not been developed, lithium batteries cannot be practical, because this is the only way to prevent them from exploding. ”

……