"The key to arc ballistics is to make the bullet spin, so in order for the shot to 'turn', you have to make the flying bullet spin!"

In an indoor shooting range, Cross was seriously explaining the knowledge of arc ballistics, and Qin Fei and Hou Jun were listening carefully.

"If it were old Sloane who was to guide you, he would have told you that the key to arcing ballistics is to follow your feelings, and that's right! Just like the various shooting skills of basketball players, you just need to keep training and develop a sense of shooting, and you don't need to know what the principle is, which I learned back then, but later, I found that this technique can be explained in a more reasonable way. There was a hint of remembrance in the cross's tone, and he sighed a little.

"That's what you just said about making the bullets spin?" Qin Fei couldn't help but say.

"Rotation is only one of the most basic premises of the arc ballistic, there is one more critical place besides rotation." Cross nodded in affirmation.

"So what?" Qin Fei asked without thinking about it.

"Cut the noodles!"

"Slice?"

"Well, let the rotating bullet form a slice with the air, and only when these two conditions are met at the same time can the arc ballistic be successful." The cross was not surprised by Qin Fei's surprised expressions, but continued to himself:

"You know the principle of 'fluid and pressure' in physics, right? Where the flow velocity is large, the pressure is small, and in the process of motion, the side with strong pressure on the same object will form a ' Thrust', just like playing table tennis or tennis, use a racket to cut the sphere obliquely, to exert a rotating force to the sphere, so that the ball will keep rotating in the process of flying forward, and due to the influence of wind resistance, the air flow will add another rotating force to the sphere, so that the rotation speed of one side of the sphere accelerates, so that the flow velocity of that side increases, and then forms a kind of oblique left or oblique right 'turn' phenomenon, which is the principle of arc trajectory! ”

"Damn! Didn't you deliberately bully me for not reading much, what kind of fluid and what pressure Lao Tzu doesn't understand, you just teach us how to do it! Hou Jun was dizzy when he heard it, and shouted sullenly.

"Hehe... Follow me! The cross was not angry, but was amused by Hou Jun's depressed appearance, and led the two to a shooting range with a sandbag hanging on the middle wall, which was just between the target and the cross.

"See clearly!"

After the cross was reminded, his expression became serious, and he pulled out a pistol hidden in his clothes like lightning, pressed his wrist slightly inward, and shook his arm diagonally upward, and the wrist he pressed suddenly shook out, and at the same time, the trigger was pulled:

"Bang!"

Hearing only a gunshot, a tongue of fire erupted from the muzzle of the gun, and the bullet came out in response, showing a state of high-speed rotation under the vision of Qin Fei's dark soul eye, constantly rotating and rubbing against the air, drawing an arc in the air, bypassing the barrier of the sandbag, and flying backwards with a roar, Qin Fei and the two turned their heads and stared back.

Hit the bull's-eye!

"Do you see?" Cross looked back at the two people who were in a daze and asked, and his voice suddenly made the surprised two people wake up.

Qin Fei nodded, shook his head again, indicating that he was half-understood, and the cross patted him on the shoulder and said:

"It doesn't matter if you don't understand, practice by yourself first, the principle has been told to you, all that is lacking is experience, and then you will practice here according to the method I just said, and I will watch from a distance."

After the cross was finished, he didn't care what Qin Fei and the others thought, he left directly, sat in a distant place, made a cup of coffee, closed his eyes and enjoyed it, leaving only the two of them looking at each other.

"Let's practice!"

Qin Fei shrugged his shoulders towards Hou Jun, and then started his practice of throwing hidden weapons, as for the object of throwing, it was naturally the iron-blooded war spear in his hand, but after practicing for a while, Qin Fei found a very serious problem, that is, it was not difficult to make the thrown war spear rotate, and the cut surface could also be done, but even if he did these two points at the same time, he could not make the war spear fly out of the arc.

Ran to ask about the cross, and the other party told him that it was because the more round the sphere, the easier it was to fly out of the arc, although the bullet was a little sharp, and it was more difficult to fly out of the arc, but there was still hope to do this, and a weapon as long as the war spear in Qin Fei's hand ...... Cross shook his head regretfully, telling him that it was almost impossible to throw an arc with such a large weapon, unless he replaced it with a smaller one.

"Fuck it! Lao Tzu was fooled! I thought that the arc trajectory was a skill.,After just two nonsense sentences, there's a light on the body.,It turns out that you have to work hard to practice.,It's really a beep dog! Lao Tzu is no longer learning! ”

Here Qin Fei was having a headache because of the problem of the weapon not being suitable, and Hou Jun over there shouted and left directly, and in the case of continuous failure to throw daggers, this thing finally lost patience, said goodbye to Qin Fei, and returned to the gravity room.

Qin Fei didn't have much to say about such a thing, let him leave here, maybe for Hou Jun, straight hand-to-hand combat was the most suitable for him, and what should he do? Do you really want to change the small secret weapon, as the cross suggests?

After being distressed for a while, Qin Fei decisively rejected this plan, originally the Iron Blood Battle Spear was just a transitional weapon for him, and the Iron Blood Battle Spear, as a special throwing weapon, was not as good as the melee effect of the sword at all, it was impossible for him to use the Iron Blood War Spear as a weapon that he would often use in the future, and he didn't change the weapon now just because the price of weapons and equipment was a bit expensive, and he still couldn't afford it now, and he didn't want to make do with a near-miss weapon, and he would definitely have to change to a new weapon when he had points in the future.

"That's right! Maybe I could use the original energy to apply a force to it the moment the spear was thrown, so maybe it could make it fly out of an arc. ”

Qin Fei patted his head, thinking of the force field type origin energy that he had awakened not long ago, it was perfect to use it to assist the arc track, it was like having an invisible hand to help on the side, it would definitely have a good effect.

However, you must be careful when using the force field to affect the flight trajectory of the war spear, you can only use skill, and you can't let the force field be too large, otherwise it will directly bounce the war spear away, and as far as the current situation of the three forces is concerned, the force field can only affect objects within a range of ten meters, and after exceeding the range of ten meters, the power of the force field is greatly reduced, and you must seize the opportunity before the war spear flies out of ten meters.

Do what you think! Qin Fei immediately came to his senses, and started his attempt excitedly, standing up straight, concentrating and calming, raising the war spear wrist and slightly buckling it inward, taking a deep breath and getting ready.

With a kick under his feet, the thigh muscles expanded violently, exerting force from the waist, driving the whole body, and the arm struggled to throw forward, and at the moment when the war spear was about to fly out, the wrist shook, and on the war spear, the war spear instantly came out of his hand, buzzed and spun, and flew out tremblingly.

Even with the help of a force field to help change direction, the rotation of the spear is not superfluous, as the force field only forcibly points out a general direction, and still needs to keep the spear in rotation.

But it's not enough! That's a long way from arc flight!

At this moment, Qin Fei's eyes opened suddenly, and the force field was activated, deliberately reducing most of the power of the force field, just using the repulsion force to slightly affect the direction of the spear tip, and then under Qin Fei's nervous gaze, the war spear really flew out of an arc gorgeously...

It worked!

Qin Fei couldn't hide his excitement, he didn't expect to be able to throw an arc track in such an almost 'cheating' way, but the result was that he succeeded, it didn't matter whether he cheated or not, not to mention that the force field was originally a part of his own ability, and he only flexibly applied it at best.

"It really worked?!" The cross stood up from his seat full of amazement, and he didn't even know that he accidentally knocked over the cup on the table, which showed that his heart was not small.

PS: The force of the arc ball is the use of fluid and pressure, Xingyu tried it himself when he played table tennis in junior high school, and there must be some friends who will do this trick, if you are interested, you can try it in your spare time, I believe you will gain a full sense of accomplishment after practice. Based on the successful practice of ball arc flight, we might as well boldly speculate that in fact, the arc trajectory in the "League of Assassins" movie is not necessarily science fiction, and it may be possible to master this skill after a certain amount of effort! If you want to try it, you must remember two points, rotate and cut the face!