Calculate the air resistance and calculate the shelling dimensions according to the parabola. Ren Di was in charge of ten steam cannons at this time to launch shelling against the enemy four hundred meters away. Ren Di was very satisfied with the troops he controlled now. The range of 400 meters was a scum in front of various fancy artillery on Earth. However, on this planet whose air resistance was ten times greater than that of the earth, the range of 400 meters was enough to outweigh most of the attacks in this world.

The total weight of steam cannons is eight tons. In the city-state with three industrial zones in Miana, the weight of this cannon will be reduced to 6.7 tons with the welding technology and the quality of the parts. The rear of the heavy cannon is a steam boiler, the front is a 280 mm caliber, and the body tube is only 3.5 meters. The large wheels of the three diameter classes on both sides of the steam cannon are arranged in a font shape and are driven by tracks.

This self-propelled cannon car is a super-large self-propelled mortar. The kinetic energy formula is mvv/2. Don’t say that the artillery design concept of this world is lagging behind the earth. It is all because the air resistance in this world is too great. The air resistance suffered by the artillery shell is exactly related to the movement speed of the object. The greater the initial velocity of the shell, the greater the air resistance. In order to allow the kinetic energy of the shell to overcome the air resistance, the artillery design of this world is forced to surrender to the air resistance. The mass of the shell is increased and the speed of the cannon ejected.

However, Ren Di liked this shooting very much. The thicker the barrel, the bigger the shells were shot, and he was in a happy mood. The No. 1 test-firing shells fired in various dimensions according to the initial corrected shooting. Then Ren Di corrected it according to the shooting situation. The No. 2 and 3 shooting artillery opened fire again according to the corrected data. After confirming again, Ren Di ordered the following seven artillery fires.

The mechanical structure of the cannon car was sprayed with a large amount of hydrogen in the air space of the closed air breeze of the cannon. The air pressure suddenly increased. At the bottom of the shell, a metal cover was deflated under the air pressure and was pierced by the fine needle inside. A little chlorine gas leaked out. At a high pressure of 50 degrees, the hydrogen and chlorine gas reacted almost instantly. The hydrogen and air in the closed high-pressure high-pressure cannon bore were ignited. The loud rumbling sound spread from the muzzle, and the heavy shell flew out of the barrel under the push of high-heat gas, whistling through an arc in the air.

The heavy artillery shells were fired to create a large cloud of smoke on the ground four hundred meters away. The ore powder in the shells was detonated under the action of a catalyst, creating dazzling flames. The powerful shock wave of a shell raged thirty meters.

Ren Di corrected the entire shelling process very well. Artillery is a technical force, because in the early stages of the industrial revolution, no one would have nothing to do to calculate the parabolic elliptical hyperbola that seemed useless. When Ren Di was learning things in school, he never saw the top student in the whole school saying that he liked this thing.

Ren Di learned this thing well, and the unit test of this project is almost 90. Ren Di dared not say that the math project is his own talent, so he can only say that it is not difficult to learn. It is at an upper level in the surrounding environment. In this world, artillery range is short, there is very little interference under windless conditions, and formula calculation is not particularly complicated. In China, everyone must learn a medium-to-high level. In this world, where only aristocrats have the leisure to learn, the level is already quite high.

It cannot be denied that Western teaching has superior development talent, and many geniuses have full play to their talents. Many Western higher education institutions are top technical talents. Not to mention anything else, Andrew, who is adventured in this world, has good athletic talent and loves adventure, and has experience in the original world in the military. He has gained the favor of the protagonist Giacomo, and now leads three Fire# Gun Teams (about 300 people) and ten mechanical soldiers. He can be called an excellent talent.

Next is Inoue Ono, a middle-aged man, who has enviable experience in mechanical repairs. This is something Ren Di cannot compare with, but Ren Di is not at the bottom. To be precise, it also has a unique advantage, that is, calculation.

Not to mention the two time travelers from Africa, just talk about the time travelers from Europe and the United States. It seems that all the talents of the time travelers from Europe and the United States are concentrated on Andrew. It is very mediocre. It is obvious that the range of this time travel system is not limited to famous schools where geniuses gather. The vast majority of European and American people still attend such public universities and pheasant universities. In the past, Chinese high school students could sweep a large number of mathematics, but they were the people who were swept. They seemed not prominent or even backward among famous schools, because these people were blocked from the eyes of Chinese people.

The speed of mental calculation and oral calculations, Ren Di undoubtedly dropped these people down. Perhaps it was because of the advantage of youth, or the teenager who had experienced the baptism of the sea of ​​questions, and Andrew and Inoue Ono could not compare with Ren Di in shelling calculations.

As for the other two Japanese, and Li Cuncheng, the Korean, who is second only to Ren Di in artillery calculations, but he was also left for a while. This fully shows that your ability in a certain aspect sometimes depends not only on talent, but also on your opponent. South Korea and Japan are still a little more developed than China. There is no backward rural area. The candidates in the provincial capital of China (except the Imperial Capital Demon City) understand how powerful the calculation and problem-solving ability of those candidates in the countryside have in the examination hall. The score line set by the mock exam every year is pulled up by these opponents to a nightmare tens.

Ren Di thanked China for its 20 years of cramming education. When most people lack hands-on experience during this time travel, Ren Di had a little more cramming knowledge in his mind. Just like a little craftsman has added a set of tools that usually seem useless but now extremely useful. Without the cramming he used to do the same, he would probably be too late to get his interest when he needs it now.

After shooting, Rendi accurately sent the distant land to the distance according to the requirements of commander Giacomo. The enemy facing Giacomo's army at this time was not the Vassi people. It was more like a magic summoning product. Warriors made of crystals.

The fighting style of this group of crystal warriors is that a crystal-structured return rod condenses on their arms. During the throwing process, blue jet flames will be sprayed at both ends of the return rod. Under the action of the jet thrust, this crystal-structured spiral rod will achieve continuous thrust acceleration.

The Vanxi troops led by Giacomo encountered great trouble in the face of this blow. The crystal reflux rod that flew down from the air hit the steel armor that the soldiers shattered, and a large amount of burning liquid splashed out. The blue flames licked the soldiers, causing panic to the soldiers' morale. The troops collected from Padonia collapsed unorganized and undisciplinedly. Only the elite troops of Miana kept the queue in an orderly manner and used bullets to fight back to the enemy.

The bullet hit these enemies and made a sound of glass shattering. You can see that most of the body tissues of these enemies were shattered, and a lot of flammable liquid leaked out, and strong flames burst out from the broken enemies.

Of course, heavy artillery finally decided everything. The powerful heavy artillery crushed these strange enemies with shock waves. After the artillery fire dissipated, they saw broken and burning crystal broken limbs on the battlefield full of bullet craters.

"This is not Vanci's troops, it seems to be some kind of magic summoner." Giacomo stepped onto his steam mecha and frowned. There was a strong fear in his eyes.

The name of the Western Continent was once unified in the past years. The Knights of Condoti Aire were the former rulers of this western continent. However, now the era of steam engines and heavy artillery fire#guns and heavy artillery has arrived, and the knights began to fall. However, you can still see the Kanto Aire mercenary camps distributed everywhere. In these camps, cavalry can be hired. There are cavalry holding fire#guns, and heavy cavalry directly charging with shields. When the power of this Fire#gun projectile has been dissipated for more than 50 meters and is almost gone, the cavalry still has vigorous vitality. Of course, under absolute firepower, such powerful troops in the old era will be greatly reduced if other troops are not cooperated.

Artillery is a technical group. Ren Di doesn't know how to fire the artillery when he arrives in this world, but this is not a very difficult thing for Ren Di. The artillery operation manual inside is very simple. Of course, if it is too difficult, it will be difficult for people on earth to see and cannot touch it, which is a bit insulting the IQ of people on earth. The mechanical level on earth is much higher than that in this world.

The two artillery groups (a total of twenty steam cannons) were pushed to the high ground, and then the comparison of the distance measurement lens through the marker one meter away from fifty meters away and reference objects such as stable railings six hundred meters away. Ren Di quickly estimated the distance of Condotti Aire in the distance. He adjusted the angle of the muzzle and started the shelling.

The four calibrated shells were approaching the camp of Condoti Arie, just like the approaching steps of the flame giant, so as to approach the camp of Condoti Arie. These four cannon speeches made the war horses neigh in a panic in the distance.

When Ren Di was ready to bounce the spot, he received an order to stop firing. Five minutes later, Ren Di saw Andrew walking towards the camp with a white flag through the telescope. He didn't know what the soldier did in this cavalry camp, but ten minutes later, Andrew rode out of the camp with many knights.

"Is he a little too smooth?" Ren Di murmured a few words. Andrew has been very decent with the characters in the plot since time travel. He has the most rights in the plot and is the well-deserved leader in the entire team.

But Ren Di seemed to think of something, and his eyes returned to calm. Ren Di put his hand into his pocket and middle-aged man. A hard steel projectile seemed to be injected by a mysterious force, and quickly became soft. Under his fingers, he deformed like mud.

Time travelers who arrive in this world are talented.
Chapter completed!