Time passed day by day.

A week later, the wind tunnel was completed.

Richard appears in the Wind Tunnel Laboratory.

You can see that the wind tunnel laboratory is like a huge warehouse, with a thick exterior wall and a tight interior wall. The core part is an independent cabin, about the same as a tunnel, about four meters wide and high, and more than ten meters long.

Compared with the real full-scale wind tunnel laboratory, it is much smaller, after all, the full-scale wind tunnel laboratory of the experimental aircraft will be as wide as more than ten meters.

Richard built the wind tunnel laboratory, not to test aircraft, but only to test miniature spell-seeking missiles, and the current volume is more than enough.

Walking into the test chamber, standing in the center, Richard looked ahead, and could see that an entire wall was equipped with metal fan blades, densely packed, and the number was a little scary.

This is the air outlet wall of the test chamber, and when the switch is turned on, the numerous metal fan blades will rotate wildly under the drive of the motor. By turning, a large amount of air is pumped in, flowing through the chamber at a constant rate, and then discharged through the air outlet.

Slightly away from the air exit wall, an inconspicuous metal target stands, which is the auxiliary prop for this test.

After briefly checking the various measures and finding no problems, Richard nodded with satisfaction and prepared for the formal test.

"Click......

Footsteps sounded, and Richard walked to the wall, opened a hidden iron plate, revealing the control panel underneath, and pressed a few switches.

"Brush, brush!"

The metal fan blades of the air outlet wall rotate slowly, and a breeze appears in the cabin, blowing head-on and intensifying.

Richard stepped back, walked back to the center of the cabin, flipped his hand, and took out the second version of the improved miniature spell homing missile from the space iron ring.

It can be seen that the improved miniature spell homing missile has a lot of changes in appearance compared to the previous version. It resembles an arrow, but the length has been increased and a tail fin has been added to improve flight stability.

The magic pattern depicted on the outside is also more cumbersome, in addition to the wind spell magic pattern that realizes the flight function, after this period of research, Richard has carved the tracking magic pattern.

This function is accomplished by a light spell.

With light spells, you can control the miniature spell homing missile to approach the target that is blocking the light in front of you, and can make small corrections.

Although there is a big gap between the real tracking, and it is not even precision guidance, it is barely usable.

Richard didn't plan to make things like miniature spell homing missiles perfect in one go. It has been prepared, and after a long period of continuous improvement, the final product is obtained.

Thinking of this, Richard controlled the outflow of free energy elements from his body, injected a miniature spell tracking missile, and activated the activation magic pattern on it.

"Buzz!"

The miniature spell homing missile shook slightly, and the magic pattern carved on its appearance quickly lit up, and began to generate momentum, and under the action of the wind spell, it broke away from the palm of the hand and flew forward.

"Brush, brush!"

The metal fan blades mounted on the air outlet wall rotate and accelerate, creating a stronger wind force that acts on the body of the miniature spell homing missile.

The miniature spell homing missile shook slightly, but instead of losing control like the last time, it was moving backwards in the moving air at a relatively slow relative speed, approaching the metal target a few meters in front of it.

One meter, two meters, three meters......

The miniature spell-seeking missile is getting closer and closer to the metal target.

"Brush, brush!"

The metal fan blades on the air outlet wall rotated at a higher speed again, reaching the highest speed according to the preset program, and immediately an unprecedented strong wind blew head-on, blowing on the body of the miniature spell homing missile.

The miniature spell homing missile shook involuntarily, almost on the verge of losing control, but after all, it did not get out of control, and continued to go backwards with difficulty. It's just that because of the lack of power, the forward trend is offset little by little, and it begins to stand still, and finally even retreats.

At this moment, the circle of magic patterns at the very front of the projectile suddenly brightened, which was the manifestation of the light spell magic pattern locking on to the target and fully activating.

In fact, the effect of the real light spell magic pattern is very large, and the moment the missile is activated, it can lock on to the target.

However, in order to better and more comprehensively test the miniature spell homing missile, Richard made certain modifications to the light spell pattern, so that the magic pattern will only really work after a few seconds of activation.

And now, once activated, all the magic patterns on the surface of the miniature spell homing missile began to flicker at an ultra-high frequency, and all the free energy elements stored in the missile body poured out, acting on the wind spell magic pattern, allowing the missile body to enter the sprint stage of locking on the target.

The speed of the miniature spell homing missile increased dramatically, and in the blink of an eye, it broke through the barrier of the strong wind, like a black light, and quickly bombarded the target.

"Bang!"

With a crisp sound, the miniature spell homing missile made contact with the metal target, and then blasted into the inside of the metal target, but ...... There was no explosion.

Yes, there were no explosions.

The main purpose of Richard in this wind tunnel test was to study the shortcomings of the projectile, and as for the warhead that released its power, it was not installed until the projectile was successfully studied.

Therefore, the whole experiment seems a bit boring.

There was no momentum, no amazing explosions, only the rotation of the metal fan blades of the "brush, brush, brush", and the strong wind of "whirring", and it came to an end after a crisp sound.

But for Richard, it was more exciting for him than detonating a ton of high explosives.

In more than ten seconds, he watched the whole process of the operation of the miniature spell tracking missile in detail, and memorized every detail and flaw.

Although the miniature spell homing missile does seem to have many shortcomings, the moment the miniature spell homing missile crosses a small arc and accurately hits the metal target, it has already covered up everything.

Through this impact, it has been proved that his design idea of the miniature spell homing missile is correct, and this is a path that can be followed.

The combination of scientific thinking and the effects of spells allowed him to successfully produce cutting-edge weapons on Earth in another form in the current wizarding world.

Although, this weapon is still very crude, and it can only be regarded as a powerless flying object at the moment.

But after taking this crucial first step, the future is a smooth one, and with the time and energy involved, anything amazing can happen.

For example, the Frozen Spell Missile. Carved a powerful water-based ice branch spell on the warhead, it controls the flight out. Once the target is hit and explodes, what is released is not flames at all, but a bone-chilling air, freezing a radius of tens or hundreds of meters.

For example, stealth spell missiles. On the projectile body, it depicts a light spell pattern that can refract light, a wind spell pattern that neutralizes sound and air fluctuations, and a hidden breath spell pattern. Let the spell missile be launched, it is completely undetectable, and even the launcher cannot determine the location. Only after successfully hitting the enemy will it reappear and then display its terrifying power.

For example, the Law of Cause and Effect Missile. On the body of the projectile, the magic missile of the prophecy system is depicted, and the target is selected, and once it is launched, it is no longer necessary. Because, under the powerful effect of fate, the spell missile will definitely hit the target.

Another example is the Space Spell Missile. Engraving some kind of space spell pattern on the warhead, turning the warhead into a space container. When you hit the target, the enemy will think a powerful explosion is going to appear and dodge. Unexpectedly, hundreds of knights in magic costumes jumped out and swept everything with a roar.

For example......