The Chaos Battle Armor was suddenly put away by Zhang Tie, revealing Zhang Tie's face under the Battle Armor, Zhang Tie glanced at Heller and laughed......

"Edward, you've worked hard for the past few days, the flying spear you created this time is indeed good, your judgment is right, in the kinetic attack, the round-headed flying spear is indeed less resistant than the pointed flying spear in the flight process, and the speed is faster......"

Edward was flattered, and his waist, which had just straightened up, bent down at Zhang Tie again, "It's my honor to serve the castle lord!" ”

In the past few days, Zhang Tie and Edward in the Black Iron Castle together to try to make a flying spear suitable for his kinetic combat skills, after hundreds of experiments, Zhang Tie determined the best weight of the flying spear that can be used without affecting his throwing speed, that is, 680 kilograms, although the flying spear beyond this weight Zhang Tie can also be thrown, but the speed of throwing out is not so fast, after a comprehensive comparison, the weight was finally determined.

In Zhang Tie's opinion, when the flying spear is in high-speed motion, the top part of the flying spear is naturally sharper, because this can reduce the resistance of the flying spear in the air, but Edward insisted that the head of the flying spear should be rounded, there is no need to make it too sharp, the two people had a disagreement, Edward simply made different styles of flying spears for Zhang Tie to experience the effect himself, Zhang Tie just experienced it, I really found that with the same weight of the flying spear, the round-headed flying spear created with Edward's scheme could indeed fly faster and encounter less resistance, while the flying spear created with his own scheme could indeed fly faster. Although the head is more pointed, when flying in the air. Instead, the resistance will be greater than Edward's round-headed spear.

At this moment, behind Heller and Edward, there was a row of different throwing spears. There are round heads and pointed heads, each of these flying spears is almost more than two meters long, shining gold, and each one is cast from gold, which looks very gorgeous and extravagant.

Zhang Tie didn't expect that he would one day use flying spears made of gold, before these golden flying spears were cast, Edward actually used sea blue iron to cast a few flying spears for Zhang Tie, but after those flying spears were cast. When Zhang Tie saw it, he almost laughed.

Because the thickest part of the body of the flying spear made of sea blue iron is almost as thick as the mouth of a bowl, and in the middle of the body of the flying spear, it has become smaller, which is convenient for Zhang Tie to grasp with his hands, and the structure of the flying spear with thick ends and thin in the middle looks a little weird and funny. In Zhang Tie's opinion, such a flying spear is simply like a string of sausages used to prepare for barbecue, and the small waist and excessive part of the thick and thin parts of the flying spear are extremely ecstatic. If you take a closer look, you can't help but laugh.

Zhang Tie didn't want to make people laugh out loud when he took out a flying spear to kill the enemy one day.

Moreover, the size of the 680-kilogram Sea Blue Iron Flying Spear was too bloated and not dexterous enough. Naturally, the drag of flying in the air is greater.

In this case, even Zhang Tie usually doesn't like luxury. But he also had to agree to let Edward use gold to build a flying spear for himself. As the preferred weapon for kinetic strikes, high-density metal is the best material.

Gold is very dense. The 680 kilogram golden flying spear was made, and the body size was only half of that of the flying spear made by Hailan Iron, and Zhang Tie held it in his hand, and there was no inappropriate feeling, and Zhang Tie, who was holding the golden flying spear, put a few broken wires at random, and he felt that his aura was a little different, and it was definitely 10,000 times stronger than taking out a string of "sausages", just like that, Zhang Tie accepted the use of the golden flying spear.

Zhang Tie walked over, holding the middle of the body of the flying spear with both hands, picking up a round-headed flying spear with one hand, and a sharp-tipped flying spear with the other, two 680 kilograms of gold flying spears were easily held in Zhang Tie's hand, Zhang Tie carefully compared the tips of the two flying spears, and asked Edward, "Why does this round-headed flying spear encounter less resistance than the pointed flying spear?" ”

"Lord Castle, when flying at low speed, the resistance of the pointed spear in the air must be smaller than that of the round head, but in the hypersonic flight state, on the contrary, it involves the aerodynamics, thermal and other aspects of the very complex hypersonic object flight state, some characteristics of some objects that are not significant in the ordinary state will become very important in the hypersonic state, if the Lord of the castle must want to know the reason, then, in one sentence, it is- The self-similar solution of the hypersonic laminar boundary layer equation, the convective heat transfer at the head station is inversely proportional to the square root of the radius of curvature of the head, and the heat load can be mitigated by passivating the head. ”

When it comes to his own field, even though Edward still maintains humility, his tone has revealed an unquestionable master's temperament.

Zhang Tie blinked, he understood the first half of what Edward said, and he understood the second half of the sentence, he also understood every word, but he didn't know what it meant when it was connected. Even if he is a master craftsman, what Edward said is beyond the knowledge and ability of a master craftsman of this era.

Just flashed Edward's words in his head for a tenth of a second, Zhang Tie gave up exploring this problem, he is not an engineer, let alone a scientist, he only cares about the result, as long as he knows what kind of weapon is easy to use, he can make his combat power burst out. It's just through this incident that Zhang Tie understands that the so-called common sense has a boundary, and sharp objects have less resistance in the air than blunt objects, which is common sense, almost everyone knows it, but if it is in a hypersonic state, this common sense is wrong.

"Is there a way to make this flying spear a little more powerful?"

"A flying spear made of platinum, because platinum is a little denser than gold, under the same weight, the volume of this flying spear can be reduced by about ten percent, and the drag of its flight can be reduced by a few percent, in addition, this flying spear can be added with a rune of solidity and sharpness......"

"Well, don't use platinum, there is not as much platinum in the Black Iron Castle as gold, just use gold to cast, this volume and resistance will not have much impact!" Although he was a little reluctant at the beginning, once he made up his mind, Zhang Tie no longer hesitated, "Cast two thousand for me first!" ”

"Two thousand?" Edward confirmed, and when he saw Zhang Tie nodding, Edward suddenly became happy, nodding vigorously, and the whole person was very excited.

"Let's go, let's go back to the palace tree, my stomach is a little hungry......" Zhang Tie took the lead and walked towards the palace tree below the peak.

Each throwing spear consumes 680 kilograms of gold, and once you throw it, 27,200 gold coins are gone, which seems to be a bit wasteful, but if a golden flying spear can kill a Black Iron Knight, then this investment is nothing.

After eating the latest Fruit of Radiance, Zhang Tie's spiritual power increased again, and the latest Fruit of Glory was almost comparable to the Fruit of Glory of Han Zhengfang's father and son combined, because that Fruit of Glory not only contained the spiritual power of the two throne Great Pastoral Leaders of the Holy Light Empire and the five Great Pastoral Leaders of the Scepter, but also the various levels of the Holy Light Empire and the Great Pastoral Leader on that flagship, and some officers added up to ten people, and the spiritual power of those people was also contained in this latest Glorious Fruit.

The surge in spiritual power has brought about another increase in the flight ability of the Divine Master, the power of Zhang Tie's kinetic energy strike, increased again, a higher flight speed, and a 680-kilogram golden flying spear, after some testing, Zhang Tie can already determine that the power of his current kinetic energy strike with the 680-kilogram golden flying spear is enough to kill the Black Iron Knight, even if the Black Iron Knight opens the protective combat qi, he will be killed by his own flying spear, The energy of 12.9 billion joules is concentrated in a small amount of power that bursts out in a microsecond time, which is definitely ten times more powerful than the explosion of an alchemy bomb and a few tons of TNT explosives, because the attack of one of the two is concentrated on an instantaneous explosion, and the attack of the other is a large-scale short-term explosion that spreads out, because the difference between the outbreak method and the time of the outbreak is too great, so the power is naturally different.

Today, the Black Iron Knight will be completely reduced to an ant for Zhang Tie.

Now Zhang Tie finally felt how domineering the word "master" of the god lord was, and the meaning of the word "master" - the person who can decide the life and death of a knight is the master!

This may be the true combat method of a Divine Dominator, the secret of mastering kinetic combat skills, and the combat method of the Divine Dominator will be more diverse, and it will no longer be limited to the one that he realized at the beginning. The way of fighting, which uses sharp and sharp weapons to cut and pierce opponents, is actually very rudimentary for the Divine Master.

For the current self, the combat method of his own god master has actually quietly expanded to three types, the first is the previous one, the second is to use the golden flying spear to carry out long-range kinetic energy strikes, and the third is also to carry out kinetic energy strikes, but it is a kinetic energy strike in melee combat like sinking the flagship of the Holy Light Empire's expeditionary fleet. The kinetic energy strike of the golden flying spear can kill the Black Iron Knight, and the kinetic energy strike of the six-eight-ton Thor's hammer at more than thirteen times the speed of sound is often the energy release of six or seven billion joules, and how many earth knights can easily withstand it?

……

Zhang Tie was in a good mood today, and when he ate in the restaurant of the palace tree, he naturally had a great appetite, and the table was full of delicacies.

After a good meal, the sky inside the Black Iron Citadel darkens, indicating that the outside world is also dark......

Zhang Tie left the restaurant, and then went directly to a warehouse of the palace tree, which was piled with seeds of various plants.

Now, it's time to tackle another problem...... (To be continued.) )