Warhammer Seal

Chapter 186 Don't Forget, There Are Two Golden Fingers
Wende is not a person who likes to wait, and he has already entered the turret at this time.

If defending a human city, Wende would also deploy a team of cavalry outside the city to kill the opponent's artillery, and charge back when the Ratman climbed the ladder.

There is a tactic in the Art of War, which is called half-crossing and attacking. Part of the enemy is climbing the city wall and the other part is still under the ladder.

It's a pity that the dwarves don't have any cavalry, the only one who does is Rishi.

She has an astonishing 68-point movement speed, which is faster than the imperial knights, and she can completely serve as a mobile force outside the city.

It just so happened that the dark elves were eager to kill again, so Wen De naturally let Rui Xi secretly leave the city wall at ease. At this time, she had already lurked outside the city.

There are no gray prophets or rat trolls among the rat people, so there is no need to worry about Ruixi's safety, and Wende can focus all his energy on the artillery in front of him.

Human artillery technology is learned from the dwarves, so the artillery units and coefficients of the two sides are exactly the same. Wende only needs to recognize the dwarf characters on the artillery to operate.

The dwarf artilleryman immediately reminded the Wende Ratmen that they hadn't entered range yet, and firing now would only be a waste of ammunition.

Who is Ke Wende?Those who have completed trigonometry and calculus.

In addition to magic immunity, his other golden finger is modern knowledge. He finally knows the use of trigonometric functions and calculus, in order to better control the cannon after traveling to this world.

Pad the front of the gun with a thicker platform, and raise a new angle for the barrel.

Assuming that the initial velocity v forms an angle θ with the horizontal plane, the initial velocity is decomposed orthogonally along the horizontal direction and the vertical direction, v1 indicates the component velocity in the horizontal direction, and v2 indicates the component velocity in the vertical direction (the subscript 1 below represents Horizontal, subscript 2 all represent vertical), there is a velocity equation:
v1=vcosθ...(1)
v2=vsinθ-gt...(2)
Because the object is not affected by external force in the horizontal direction, it moves in a straight line at a uniform speed, and in the vertical direction it is only affected by gravity, so it does a vertical upward throwing motion, so the displacement equation is listed:
s1=vtcosθ...(3)
s2=vtsinθ-gt^2/2...(4)
Since the moving time of an object in the air depends on when the object hits the ground in the vertical direction, the moving time is calculated according to the partial motion in the vertical direction. When the object lands, the speed is the same as the initial speed, but the direction is opposite, so have:-
vsinθ=vsinθ-gt
t=(2vsinθ)/g
Substituting t into equation (3), the range of oblique throwing motion is:
s1=(2v^2sinθcosθ)/g=(v^2sin2θ)/g
It can be seen from the range equation that when θ=45, 2θ=90, the above formula has a maximum value

The above formula is the derivation value under ideal conditions without considering the air resistance. In fact, under the action of air resistance, the launch angle of the initial velocity is 39 degrees (+-2) and the range is the farthest.

However, the actual situation in the city of Jiuliuguan is different. There are mountains on the left and right sides here, and the altitude is relatively high, so the air resistance only needs to take four-fifths of the conventional coefficient.

The cannon, which could only be raised by 25°, was forcibly raised to 43° by Wende with a stone in front.
The Ratmen were completely unprepared, and slowly walked towards the city wall.

It seemed that the other party was a ratman warlord with combat experience. He knew how to save the soldiers' energy and would wait until they reached the range of the artillery before starting to disperse and charge. Now all the ratmen still gathered together.

The sound of cannonballs piercing the air came from overhead, and there was a terrifying echo among the mountains. A clockwork bomb actually broke through the range and came to the top of a group of clan rats. It was three meters away from the ground. There was an airburst.

The broken iron, rusted iron, and iron particles burst out instantly and pierced the body of the clan rat. There was no horrible scene of blood and flesh flying all over the place. The clan rats whose internal organs were shattered fell one after another. It is estimated that a single shot can kill more than ten people. Only.

The Ratmen are timid, but they have seen the power of the dwarven clockwork turret before, so the morale blow caused by such an attack is only half of the previous one.

At the same time, the clan rats who were still alive began to rejoice. You must know that although the dwarven shells are very powerful, the reloading time is very long, and the interval between two shells is at least ten seconds.

How can it be?Why is there the sound of shells piercing the air again from overhead?

The good news is that the ears of the clan rats did not have auditory hallucinations.

Bad news, the same clockwork bombs as before came to their heads again, completing an air explosion.

Sting, a dozen ratmen fell down again.

They finally stopped walking and started running towards the city wall.

This was exactly the scene Wend expected. Among all the races, the dwarves had the most physical strength, and they could fight for a long time before they began to get tired. The ratmen had the least physical strength, with only a short burst time of 2 minutes. There is no way to support the troops to fight for a long time.

At this time, the Ratman walked into the range of the dwarven artillery again. Including Wende, six artillerymen fired at the same time, and every volley could directly knock out a group of Ratmen.

If it weren't for the Ratman warlord standing behind to oversee the battle, I'm afraid some Ratmen would have started to flee.

Compared with the other five cannons, the cannon controlled by Wende reloads very quickly.

The cannonball that originally required the joint efforts of two dwarves to lift it up could be easily picked up by Burning Feather alone, and then loaded into the barrel.

This kind of rapid fire has already made the dwarf's artillery barrel start to glow red. If it continues to load like this, it will inevitably burn the loader.

But Zhuo Yu was born a fire dragon, and what he was most afraid of was high temperature damage.

Moreover, there is a big difference in quality between the dwarf-forged barrel and the human-forged barrel. Even such high-intensity shooting did not cause any deformation of the barrel.

It's a pity that no matter how hard Wende shot, the speed at which the cannon blasted the Ratman was far behind the speed at which the Ratman charged towards the city wall.

Every ratman is very clear about his own destiny. If they can't defeat the dwarves in the rapid pass, they will starve to death throughout the winter because of lack of food.

They have already begun to climb the city wall, and the dwarves on the city wall are constantly shooting down various stones thrown by the catapult rats, killing the ratmen who are attacking the city.

The artillery had already lost its effect at this time, quickly picked up Burning Feather, and Wen De immediately rushed to the frontal battlefield.

Because what I did just now consumed a lot of stamina of the Ratmen, the victory of this battle must belong to Torrent Pass, and what Wende has to do now is to minimize the casualties of the dwarves, the front line is where he must go .

He took the brand new and improved musket from his back, drew out the bayonet strapped to his leg and hung it under it.

"It's time to perform the real technique."

　Four general applications of calculus:
　　(1) The problem of finding the maximum and minimum values, the range of the shell, and the angle of launch.

　　(2) Find the function of displacement versus time, and find velocity and acceleration.

　　(3) Find the tangent of the curve.

　　(4) Find the length, area, volume, and center of gravity of the curve.

　　On the battlefield, the continuous firing of the artillery will cause the temperature of the barrel to rise very quickly. If the barrel is already red, it will not only cause damage to the loader, but also increase the probability of explosion.

　　Thanks to the craftsmanship of the dwarves, if it is a human cannon, I am afraid it would have exploded, so human soldiers, especially artillery, generally drink a lot of water before starting a battle. When the temperature of the barrel is too high, a group of people urinate on the cannon to cool down .

　　The barrel of the human artillery is rarely red, mainly because the human artillery is still in the front loading mode. If it is red, it is impossible to load gunpowder from the front.

　　The dwarven artillery is rear-loaded and lasts longer than human artillery, but smart human artillery will always pee on the barrel to cool down at the most critical moment, and then continue to provide artillery support to the frontline troops.

　　perfectly worked.

　　Thank you [Xiao Ayue] for the monthly pass, thank you.

　　
　
(End of this chapter)