The scene of the magically modified "Da Fei" "speeding" on the water left an indelible impression on everyone present, which was extremely shocking. But after calming down, I was thinking about a question-what's the use of this kind of magic reform?

You say you can use it for battle, but the speed of the ship is useless. After all, ships are not meant to collide with people. Even if they catch up, they still have to rely on firepower to deal with their opponents. As for the warships of the Beihai Kingdom, their speed is no lower than that of other countries' warships, and they can catch up on their own. It doesn't seem like a good deal to use a diesel engine...

If it is used as a speedboat to transmit information... No matter how fast the ship is, it is not as fast as the carrier pigeon... If it is an ultra-long distance across the Atlantic Ocean, where the carrier pigeon is difficult to reach, this kind of big flight can also be used, that is , Too much fuel consumption!

According to estimates, the 12-horsepower single-cylinder diesel engine that Marin made a counterfeit consumes two to three liters of diesel per hour. If four engines are paralleled, it will consume eleven or two liters of diesel per hour. If you run for 10 hours a day, a Dafei will consume more than 100 liters of diesel...

But for the current Marin, diesel is in short supply. The current reserve is only 10 barrels of diesel, which is about 1590 liters, which cannot withstand the consumption of several "Da Fei".

If it's just a message, Marin might as well build a clipper ship. That way, at least it doesn't consume fuel. Want to really use the diesel engine, unless there is a major role. For example, for naval warfare...

"Okay, let's play a little bigger this time, and directly put the diesel engine on the battleship!" Marin fooled Da Vinci and his disciples to go crazy.

Everyone came to the hidden William Naval Harbor and attacked the warships moored in the harbor...

First of all, if the rudder blade is placed in the middle of the stern, it must be refitted. Because, according to Dafei's standards, the rudder blades in the middle are likely to conflict with the parallel propellers. Therefore, the rudder can only be placed on both sides.

Fortunately, this problem is not too big. As long as there is a rudder wheel system and an additional labor-saving lever system combining fixed pulleys and movable pulleys, the rudder blades can be placed on both sides of the stern. Then, the captain just stands in the middle of the stern and turns the steering wheel.

Then the diesel engine was installed. A 250-class armed merchant ship with a width of seven or eight meters, Marin installed eight 12-horsepower single-cylinder diesel engines in a space of one meter.

Next is the test...

It is different from the test of inland boats, after all, it is a large boat with a displacement of 250 tons. Eight 12-horsepower diesel engines have a total horsepower of only 98 horsepower, and in later generations, fishing boats start with 150 horsepower...

As a result, the speed of the 250-class armed merchant ship driven by eight 12-horsepower diesel engines was only 8 knots without raising the sails.

However, if the sail is hung and the two kinds of power are added, the tailwind can run at a high speed of more than 13 knots...

Headwind or no wind... 8 knots is king!

After transforming the 500-ton warship, the effect is even worse. After all, the tonnage has doubled, but the power has not changed...

In fact, 12 single-cylinder diesel engines can be placed on a 500-ton warship. However, Leonardo da Vinci and his mechanical students only had 10 useful ones in total, and two of them were damaged. Currently, only 8 of them can be used for testing.

96 horsepower to drive a 500-ton ship is naturally very difficult. In a calm state, the speed of a 500-ton warship is only a little over 4 knots... This boost is not as good as someone with a rower... Even if it is filled with 12 single-cylinder diesel engines,

Marin estimates that the windless speed is only a little over 5 knots, which is of little significance. No way, the boat is too big and the diesel engine power is too small...

Marin wanted to increase the power of the diesel engine, but unfortunately, he had never studied mechanics in his previous life. Knowing the principle of the internal combustion engine is taught in middle school textbooks. I can know the structure of a single-cylinder diesel engine because I followed my father to repair the walking tractor at home. As for the design principle of the diesel engine, how to increase the power... Sorry, we are not professionals...

As for Leonardo Da Vinci, the scientific master, he still learned power calculation formulas such as the kinetic energy equation from Marin, and he is expected to improve... If Da Vinci is 20 years younger, he may still be able to count on...

But anyway, the standard 12hp single-cylinder diesel engine is there. As the Department of Mechanics trains out mechanics one after another, there will always be excellent mechanics who can improve diesel engines.

Marin knows that if a diesel engine wants to achieve high power, it must use multiple cylinders. However, he doesn't even know the principle of multi-cylinder steam engine, let alone diesel engine? Therefore, he could only write such a sentence in the Da Vinci Mechanics Department textbook——

"According to the speculation of the great sage Einstein, if more cylinders are added, it is estimated that the power and performance of steam engines and diesel engines can be improved!"

As for the rest, Marin can only hope that there will be another genius like Da Vinci among the students of the Department of Mechanical Engineering, who will be able to design a high-power multi-cylinder diesel engine.

For this reason, Marin offered a high reward - whoever can produce a multi-cylinder steam engine or diesel engine will be rewarded with 10,000 gold coins and a non-hereditary jazz title!

This is quite a high reward. A great god like Newton will only be a jazz until his death, and it is because he became the president of the Royal Bank of England. Others, who are not from noble backgrounds, have almost no shortcuts other than going to the battlefield to earn military merits.

Therefore, Marin's reward is actually beyond the standard and very attractive.

But Marin knew that this reward was really nothing compared to the benefits it brought. You must know that once the steam engine realizes the double-cylinder linkage, it can be applied to the train, so that the train can run at a speed of 20 to 30 kilometers or even 40 kilometers per hour. Applied to a ship, it can also make the ship run at a speed of more than ten knots.

If the diesel engine can achieve multi-cylinder linkage, it will be even more remarkable. Its extremely fast speed will bring people into the era of internal combustion engines, and the speed will also be greatly improved. The most important thing is that it can make diesel-powered cars appear and change the way people travel.

Marin began to regret that he didn't take the mechanical department in his previous life. If he had known that he would travel through time, he would have taken a double degree in history and mechanical...

Back then, when he took the college entrance examination, it was three plus two, language and mathematics plus any two, which was optional. For example, candidates can choose the wonderful combination of physics + history...

Later, I probably felt that although this model was humanized, it was inconvenient to manage teaching, so I changed it later...

You know, at that time, students who chose courses across arts and sciences, if they chose physics + history, might take science classes in the morning and go to liberal arts classes to study history in the afternoon. . But how can students beat the school? Therefore, it is normal that this humanized course selection mode was cut off...

...

In fact, it is already great that Marin can bring the simplest single-cylinder diesel engine to this era. Because, this simply disrupted the development of the world's normal technology tree.

You know, even a walking tractor is a very powerful existence. Not to mention the efficiency of the cultivated land, even if you run on the road, you can run at a speed of more than ten to twenty kilometers per hour, and you don't need to rest, and you can finish the horse. Moreover, the cargo capacity is much larger than that of a horse-drawn carriage.

In addition, the head of the single-cylinder diesel engine is also a universal product. It can drive the rice mill to grind rice, it can drive the steel mill to grind the surface, and it can drive the water pump to pump water for irrigation...

Well, with the addition of specially designed suspension equipment, it can also act as a harvester, which is much more efficient than humans...

The only problem is that the oil extraction technology is backward and it is impossible to get enough oil...

...

Therefore, after thinking about it again and again, Marin didn't think it was necessary to install a diesel engine on the 500-ton warship. Because, these warships, as long as the speed is not slower than the enemy ship is enough. In terms of firepower and resistance to beating, who can compare to the Galen warships of the Beihai Kingdom, which are tens of hundreds of years ahead of the times?

However, it is feasible to install diesel engines on 250-class armed merchant ships. Because the speed of 8 knots without wind is considered very fast in this era.

Although speed is useless under normal circumstances, if you learn Bidusi's fighting tactics, it will be very valuable...

If 8 single-cylinder diesel engines are installed at the stern of the paddle boat designed by Beihai, how high will the speed of this paddle boat be after the war? Even in a windless area, it can reach a speed of 8 knots, faster than the Calais boat. If the oarsmen cooperate with each other for a few more strokes...the speed is estimated to reach 10 knots.

At that time, in terms of maneuverability, who can compare to the 250-modified sailboat? Coupled with the power of the lizard cannon in front of the sailing boat, Bidus' tactics can be used to the extreme...

"Well, that's it. Select a few 250-class armed merchant ships, modify them, and install 8 single-cylinder diesel engines. Since the French ship is called a Calais ship, then this kind of ship is called a Dover ship... ..." Marin decided.

Dover is the English port directly opposite the Port of Calais. The two ports jointly guard the narrow Calais Strait (called the Strait of Dover by the British).

Since he was going to stand on England's side after all, Marin naturally considered the issue from England's perspective. Moreover, this ship is also designed for the Calais ship.

In the future, regardless of whether the Calais ship can hit the English ship, once the Dover ship with 8 single-cylinder diesel engines installed by Marin is shot, the French Calais ship cannot escape...

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