Calculate the air resistance, and according to the parabola, calculate the shelling dimensions. Ren Di was in charge of ten steam cannons at this time to shell the enemy four hundred meters away, Ren Di was very satisfied with the troops he was now controlling, the range of four hundred meters was a scum in front of all kinds of fancy artillery on the earth, but on this planet where the air resistance was more than ten times greater than that of the earth, the range of four hundred meters was enough to be proud of most attacks in this world.

The total weight of the steam cannon is eight tons, and in the city-state of Miyana, which has three industrial zones, the weight of this cannon will be reduced to 6.7 tons with the quality of welding technology and parts materials, the rear of the heavy cannon is a steam boiler, the front part is a 280 mm caliber, and the body barrel is only 3.5 meters. The steam cannon carriage was flanked by three large wheels of the diameter class arranged in a zigzag pattern, with a track drive.

This self-propelled artillery truck looks like an oversized self-propelled mortar on Earth. The kinetic energy formula is MVV/2, not to say that the artillery design concept of this world is more backward than the earth, all because the air resistance in this world is too large, and the air resistance suffered by the shell is precisely related to the speed of the object's movement, and the greater the initial velocity of the shell, the greater the air resistance. In order for the kinetic energy of the projectile to overcome the air resistance as far as possible, the artillery design of this world is forced to succumb to the air resistance. Increased shell mass, sacrificing gun chambering speed.

But this shooting, Ren Di likes it very much. The thicker the barrel, the bigger the shell fired, and the mood was happy, the No. 1 test shell struck according to the first corrected shooting dimensions, and then Ren Di corrected it according to the shooting situation, and the No. 2 and No. 3 shooting artillery fired again according to the corrected data, and after determining it again, Ren Di ordered the following seven artillery salvos. ，

The mechanical structure of the gun carriage sprayed a large amount of hydrogen gas in the confined air space of the breech of the gun, the air pressure increased suddenly, and at the bottom of the shell # fire position, a metal cover was deflated under the action of air pressure and was pierced by the fine needle inside, and a little chlorine # gas leaked out, and hydrogen and chlorine # reacted almost instantaneously at a high pressure of 50 degrees. Hydrogen and air in the chamber of the sealed high-pressure gun were ignited. A loud rumbling sound was heard from the muzzle of the cannon, and the heavy shells, propelled by the high heat gas, flew out of the barrel and whizzed through the air in an arc.

The salvo of heavy artillery shells created a large cloud of smoke on the ground 400 meters away, and the ore powder in the shell was detonated under the action of a catalyst, creating a dazzling fire, and the powerful shock wave of a shell raged over a range of 30 meters.

The whole shelling process was corrected very well, artillery is a technical branch, because in the initial stage of the industrial revolution, no one would have nothing to do to calculate the parabolic elliptical hyperbola that looks useless. When Ren Di was learning things in school, he hadn't seen that top student in the whole school say that he liked this thing.

Ren Di learned this thing well, and the unit test of this project is almost at 90 points. Ren Di didn't dare to say that the math project was his talent, but he could only say that he didn't work hard to learn. It is on the upper level in the surrounding environment. This world artillery has a shorter range, very little interference in windless conditions, and the formula calculation is not particularly complicated. In China, where everyone has to be taught in an upper-average level, in a world where only the aristocracy has the leisure to learn, the level is already quite high.

It cannot be denied that Western teaching has the superiority of developing talents, and many geniuses are due to the full development of talents. Many Western institutions of higher learning produce top technical talents. Not to mention anything else, Andrew, who is adventurous with Ren Di in this world, has good athletic talent, loves adventure, and has military experience in the original world. Having gained the favor of the protagonist Giacomo, he now leads three Musket teams (about three hundred men) as well as ten mechs. He can be called an excellent talent.

Then there is Inoue Ohno, a middle-aged man with enviable experience in mechanical repair. This is also something that Ren Di can't compare, but Ren Di is not at the bottom. Specifically, it has a unique strength, and that is computing.

Not to mention the two traversers from Africa, let's talk about the traversers from Europe and the United States, it seems that all the talents of the traversers from Europe and the United States are concentrated on Andrew. Very mediocre. Obviously, the scope of this crossing system is not limited to prestigious schools where geniuses gather. The majority of people in Europe and the United States still attend such public universities and pheasant universities. In the past, Chinese high school students could sweep a large area in mathematics, and it was these people who swept away. It is not prominent or even backward in the famous schools, also because these people are stopped outside the gate of foreign famous schools in the eyes of the Chinese.

Mental arithmetic, oral calculation, pen calculation, and speed, Ren Di undoubtedly threw these people down. Maybe it's the advantage of being young, or maybe it's a teenager, who has experienced the baptism of the sea tactics, and Andrew and Inoue Ohno can't compare to Ren Di in terms of shelling calculations.

As for the other two Japanese, as well as Lee Cun-sung, a South Korean. It is second only to Ren Di in artillery calculations, but it was also thrown a distance. This fully shows that the level of your ability in a certain area sometimes depends not only on talent, but also on your opponent. After all, South Korea and Japan are still a little more developed than China. There are no backward rural areas. Candidates in China's provincial capitals (except for the imperial capital and the magic capital) all understand how strong the ability of those candidates who study hard in the countryside is in the examination room, and the score line set by the mock exam every year is a nightmarish few points by these opponents.

For the first time, Ren Di thanked China's cramming education in the past 20 years, and when most of the people lacked hands-on experience in this crossing, Ren Di had a little more knowledge of cramming in his mind. It's like a small craftsman's backpack with an extra set of tools that usually look useless, but are now extremely useful. There is no cramming at the beginning, and when I need it now, I am afraid it will be too late.

One after another, Ren Di accurately sent to the distant land according to the requirements of the commander Giacomo, and the enemy that Giacomo's army was facing at this time was not a Fansi person. It's more like a product of magic summoning. Warriors made of crystals.

The fighting method of this group of crystal warriors is to condense crystal-shaped pull-back rods on their arms, and blue jet flames will shoot from both ends of the pull-back rods during the throwing process. Under the action of the jet thrust, this crystal-shaped whirlwind will achieve continuous thrust acceleration.

When Giacomo led the Van Si troops. In the face of this kind of blow, the crystal boom whirling down from the air struck and shattered on the soldier's steel armor, a large amount of burning liquid splattered out, and the blue flame licked #The soldiers, causing panic to the morale of the soldiers, the troops recruited from Padonia mainland were disorganized and undisciplined, and only the elite troops of Miyana kept the queue in an orderly queue to return the bullets to the enemy.

The sound of glass shattering from the impact of the bullet on these enemies could be seen, most of the body tissues were shattered, a lot of flammable liquid leaked out, and strong flames erupted from the broken enemies.

Of course, the heavy artillery ultimately decided everything, and the powerful heavy artillery crushed the strange enemies with a shockwave, and after the fire cleared, the battlefield was full of craters and saw broken and burning crystal fragments.

"It's not Fansi's troops, it seems to be some kind of magical summoning." Giacomo stepped into his steam mecha and said with a frown. There was a deep fear in his eyes.

The name of the Western Continent was unified in the past, and the knights of Condoti Ari were the former rulers of the land of the Western Continent, but now the era of steam engines, fire # guns and heavy artillery has arrived, and the knights have begun to fall. However, you can still see the Condoti Airi mercenary camps scattered all over the place. In these camps it is possible to hire cavalry. There were cavalry armed with fire# spears, and there were also heavy cavalry with shields to charge. In this situation where the power of the fire# gun projectile has dissipated more than fifty meters and almost disappeared, the cavalry still has a strong vitality. Of course, under absolute firepower, this powerful class of troops in the old era will play a greatly reduced role if there is no cooperation with other arms.

Artillery is a technical branch, Ren Di didn't know how to fire when he arrived in this world, but this is not a super difficult thing for Ren Di at the university level, and the artillery operation manual inside is very simple. Of course, if it's too difficult, it's so difficult that earthlings can't even touch it, which is a bit insulting to the intelligence of earthlings. The level of machinery on Earth is much higher than in this world.

Two artillery groups (a total of twenty steam cannons) were pushed up to high ground, and then compared on the ranging lens through a one-meter-high marker fifty meters away, and a reference such as a stable railing six hundred meters away. Ren Di quickly estimated the distance of Condoti Ari in the distance. The muzzle angle was adjusted by two calculations, and the shelling began.

Four calibrated cannonballs, like the Flame Giant's approaching footsteps, approached the camp of Condottiari. These four cannons spoke, causing the horses in the distant camp of Condoti Airi to neigh in a panic.

When Ren Di was ready to shoot the bullet point, he received an order to stop firing, and five minutes later, Ren Di saw through the binoculars Andrew walking towards the camp with a white flag. He didn't know what the GI had done in the cavalry camp, but ten minutes later, Andrew rode out of the camp on horseback with a number of knights.

"Isn't he a little too smooth," Ren Di muttered softly. Andrew has been very decently with the characters since the time crossing. In the plot, he has the most power in his hands, and he is the well-deserved leader of the entire team.

But Ren Di seemed to think of something, his eyes returned to calm, Ren Di put his hand into his pocket, and a hard steel projectile seemed to be injected by a mysterious force, quickly softened, and deformed like mud under the plucking of his fingers.

The traversers who reach this world are all gifted.