Among the mountains, there is a secret aircraft research base.

There is a semicircular mountain passage inside the base. Walking along the passage, you will enter a hidden narrow valley.

One end of the valley is closed, while the other end is a steep cliff. Inside the valley is a 25-meter-wide and 500-meter-long tempered yellow clay road.

"Woo~~Woo~"

Amid the low hum of the motor, a specially made electric vehicle towed a flatbed truck and slowly drove out of the underground passage.

On the flatbed truck was a strange blunt triangular creature about 20 meters long and 10 meters wide.

There is a circular hole at the tail of this creature, and a transparent bulge with smooth lines near the blunt-angled head.

At first glance, it looks a bit like Earth's flying wing bomber.

It can be seen that there are two slightly narrow seats in the bulge, one in front and one in the back, with two people sitting on them.

In the front seat was Rosen, and in the back seat was the flying master Neferoniya.

This strange thing is naturally the rune aircraft created by Rosen.

It's very similar to an airplane, but the power is not propellers, but jet-like.

It is called jet-like because it uses a method that is very different from the Earth's jet engines to obtain jet airflow, and does not have complex and sophisticated vortex blades and rotating shafts.

There are pros and cons to doing this.

The disadvantage is that the thrust is greatly limited, and the only way to obtain sufficient lift is to increase the wing surface, and the top speed is naturally greatly limited.

It is common sense here that, for flying, thrust and wing surface are inversely proportional. The greater the thrust, the smaller the wing surface area. When the thrust reaches a certain level, even a single person can fly into the sky.

The advantage is that the structure is simple, the manufacturing difficulty is greatly reduced, and the consumption of mana is also reduced to a minimum.

In the cockpit, Rosen was using small detection spells to carefully check every delicate component of this small rune plane to ensure that there was no problem.

As the plane got closer to the exit, Neferoniya seemed a little nervous and her breathing became slightly heavier.

Rosen smiled and said, "Niya, are you scared?"

Loferoniya did not deny this: "This is the first time I fly without wings, and as long as I think about the top speed of this thing is more than twice my speed, I feel a little panicked."

In light wind conditions, her maximum flying speed is about 180 kilometers per hour. If Rosen transforms into a steel dragon and sprints at full speed, her speed is slightly faster than hers, reaching 200 kilometers per hour.

But this blunt triangular rune aircraft, whose wings and body are almost completely fused, is designed to have a cruising speed of 380 kilometers per hour and a top speed of 500 kilometers per hour.

For an airplane, this speed is not considered fast, as propeller planes on Earth can reach or even exceed it, but it is already the limit of the island's capabilities under current conditions.

It is also an ultra-high speed that is beyond the reach of mortals in this world.

Rosen smiled and consoled, "Don't worry, there are enough safety features on the magic weapon. Even if we crash straight into the mountain, we won't die."

"That being said, you made all these things. I know nothing about them, so of course I still feel guilty."

"That's true. Then I'll fly slowly at the beginning, about the same speed as our maximum flight speed. Then I'll slowly speed up."

"good."

At this time, the plane was completely towed out of the mountain passage and turned onto the yellow clay road in the valley.

After the nose of the plane was in the correct position, Rosen raised his hand to signal irrelevant personnel to stay away from Valley Avenue.

After waiting for a while and making sure that everyone was in a safe area, Rosen raised his hand and pressed the valve. The gas installed in the compressed gas cylinder immediately poured into the rune combustion chamber at normal pressure with a "hissing" sound.

After less than a few seconds, Rosen ignited the mixed air in the combustion chamber.

"Boom~~~Huh~~~"

The initial mixed air formed a weak explosion, but soon the combustion returned to normal.

“This thing is really scary.”

Neferoniya wiped the sweat from her forehead. If she hadn't been wearing the Ice Amulet or hadn't lost the bet while playing games on the beach, she would never have sat on this thing.

Rosen chuckled, his mind moved slightly, and he began to pour magic power into the gale transformation array.

As the magic circle was activated, the flame power in the combustion chamber was transferred to the airflow in the jet chamber.

"Huh~~"

The jet chamber starts, the front airway begins to inhale violently, and the rear airflow is ejected violently backwards.

The jet of air was very strange, almost completely transparent, without any temperature or color, just like a directional, high-speed heat wave.

The rune plane trembled slightly and began to accelerate forward.

The 500-meter acceleration runway is not long, but it is enough for the rune plane to take off.

When the speed was almost the same, Rosen pulled the joystick, and the rear of the wing flipped down slightly, pulling up the nose of the plane.

The fuselage shook slightly and rose from the ground at a small angle.

"It really flew!" Neferoniya exclaimed in a low voice.

She knew that this thing weighed more than five tons.

She did not forget her mission and immediately began to carefully feel the changes in the airflow around the plane. She was amazed: "From the current point of view, the wind control is very stable. It is almost like sliding forward in the airflow."

Rosen didn't say anything. He was closely monitoring the aircraft's flight status.

There are three main important parameters.

One is the remaining gas volume, and the other is the operating status of the conversion array.

The third, and most important, is the operating status of the flying puppet.

This flying puppet is the key to this plane's ability to take off.

If there is no such thing to assist, and the flight relies solely on the control of the mage, the difficulty of flying will increase to an incredible level, and few mages will be able to fly.

It is powered by puppet psionic energy, which is stored in specially made psionic crystals.

The psychic energy will be filled up in advance before flying to save the flying mage's mana.

According to the design, the psychic energy within the psychic lattice can support the operation of the puppet for about 3 hours.

So far, everything seems to be working fine.

Soon, the Rune Plane rose to an altitude of about 500 meters and its speed increased to 200 kilometers per hour.

The fuselage is still very stable, and thanks to the cockpit glass and good sound insulation measures, the cabin is still quite quiet.

Neferoniya commented: "Well, now I feel its benefits. It saves effort and is quiet. If I were to fly by myself, I would hardly be able to open my eyes right now."

Rosen reminded: "Do you feel that there is something missing?"

All his knowledge of flying came from the two Banshee Queens, and so did Lai Fu.

In their opinion, this aircraft is the best currently manufactured.

But there is no guarantee that it is the best in Neferoniya's eyes.

Neferoniya calmed down and carefully felt the changes in the wind force around the fuselage: "I feel some flaws, which is the main source of the vibration of the fuselage, but at this speed, it is not a big problem."

"Try speeding up."

Rosen slowly accelerated.

But the fuselage is made of newly developed hardened pure water material and adopts a variety of reinforced structural designs, so it can still withstand it.

At this time, the aircraft reached a cruising speed of 350 kilometers per hour.

"There are three minor defects, one is a manufacturing defect, and the other two are probably structural defects."

The noise in the cabin was so loud that Neferoniya had to shout loudly.

Rosen also roughly felt it.

The aircraft is currently at an altitude of only over 1,000 meters. Looking down from here, we can see that the mountains and forests below are flying past at a very fast speed, and seabirds are flying quickly around the fuselage from time to time, posing a risk of bird strikes at any time.

Although according to the design strength, a bird strike at a speed of 350 km/h should not penetrate the cockpit, but we should always be prepared for the worst.

So he immediately turned on the special lightning bird-repelling sound waves.

Neferoniya asked, "Do you want to speed up further?"

Rosen didn't answer. He carefully felt the structure of the fuselage and felt that he could still hold on, so he said, "I'll speed up a bit."

He once again increased the intensity of combustion, raising it to the designed maximum speed of 500.

The wind outside the cockpit began to roar, and the fuselage seemed to be dancing in the air flow, as if it might flip over from the sky at any time.

Rosen's mana was also being consumed at a faster rate.

Neferoniya calmed down instead. She held on to the fixed handle tightly and carefully sensed the air flow around her in the chaos.

Then, sure enough, I discovered a few minor flaws.

It has no effect at all at low speeds, but as the speed increases, it gradually emerges and becomes a safety hazard.

"Rosen, that's enough. If we fly a little longer, this thing will fall apart."

Rosen had a similar feeling. He began to slow down slowly and controlled the plane to turn back into the secret valley.

'Huh~~~~~~~~~~~~'

The plane landed smoothly on the avenue.

"How do you feel?"

Neferniloya had basically adapted to it and praised it sincerely: "This thing is really fast, just like lightning."

She calmed down for a moment, then opened the cockpit, climbed onto the fuselage, and began to mark various parts of the fuselage with a charcoal pencil.

"Circles are big problems, crosses are small problems, and cross circles are problems that occur at extreme speeds. There are eight in total, but I don't know exactly how to fix them, after all, I've never flown that fast before."

“We have to try again and again.”

Rosen felt his own mana, which was still 90% and the combustion gas cylinders in the plane were still sufficient, so he said, "Then let's modify it again and again."

The part that needs to be modified is not large, and the extent of the modification is also small. It can be directly processed using deformation technology, so it is modified on the spot.

After the modification, it was directly sent into space for testing.

In the following time, the two of them tried it over and over again, making fine adjustments bit by bit.

I revise from morning to night, and if I don’t finish in one day, I will continue the next day.

This process lasted for five days, and after dozens of experiments, the appearance of the aircraft remained basically unchanged from five days ago, but very precise adjustments were made to the details.

These adjustments may seem insignificant, but they are the true essence of this rune plane and the biggest hurdle for others to imitate.

At this moment, it can finally run stably at a maximum speed of 500 kilometers.

After taking off into the sky once again, the rune plane passed quickly across the sky like a flash of light, and advanced 140 meters in the blink of an eye.

The posture is particularly stable, the airflow is extremely stable, and the fuel and mana consumption are much less than the first version.

In the back seat, Nephniloya felt the roaring wind outside the cabin, while at the same time experiencing the quiet and tranquility of the air flow inside the cabin.

There is only a thin layer of transparent glass between extreme movement and extreme stillness.

Turning around, I saw clouds flying backwards. Looking down, I saw the White Sturgeon Island becoming somewhat smaller.

Before they knew it, they had reached an altitude of six thousand meters, which was also the ceiling of this rune plane.

She couldn't help but sigh: "The magic of the new era is really great!"

This was a level she could never reach no matter how hard she flew, and she didn't even dare to think about it in her dreams.

Rosen shook his head, "It's not great enough yet. There is still endless potential for improvement, especially since you don't know the true secret of the magic ring yet."

"You are so unsatisfied, but this is probably the driving force for the advancement of the technique."

After a careful examination, she asked, "How long can your magic power last at extreme speed?"

"About 4 hours. If it's a high-level mage, he can probably only last 10 minutes, but if it's cruising speed, a high-level mage can last 1 hour."

Obviously, although a high-level wizard can fly it into the sky, he can't fly for long and the battle time will be very hasty.

The current solution is to equip two high-level mages, and then use mana recovery potions as an aid to perform relay control.

Neferoniya thought about it carefully: "That means we can travel back and forth within more than 400 kilometers, covering the Shire County."

Rosen nodded: "Almost, but the voyage is still too short."

In this regard, the electric propeller aircraft currently under development can fly much farther because they involve fewer conversion arrays and have low dependence on mana.

However, the mechanical structure of a motor propeller aircraft is much more complex and sophisticated, and cannot be produced in a short period of time, so it cannot be produced in time for the Weilan civil war.

He thought to himself: "Let's use it first, and when the island's machinery manufacturing level reaches a certain level, then find a way to improve it."

Pull the nose over and descend back to the aircraft base again.

After getting off the plane, he found the senior wizard in charge of aircraft production, a Kao named Todd: "Let's produce it according to this standard. Time is short, so we can build as many as we can."

Rosen estimates that he can produce about 10.

Todd nodded and asked again: "Lord, do you want to load your weapons?"

"Of course we have to install them. One part for the psychic weapons, and the other part for the master lightning crossbow."

Psychic weapons are made of high-level lightning lattices combined with psychic meteorites. One is a 'stun bomb' and the other is a 'deterrent bomb'.

The island’s strong point is lightning lattices, which are small in size but large in capacity.

Mental Meteorites have also been artificially synthesized, but the output is very small and only two can be equipped at present.

If we really want to fight a large-scale battlefield, this amount of air power is simply not enough and can only be used for deterrence for the time being.

Todd asked again: "Lord, should we give it a name?"

Rosen had already thought it through: "The one that carries the spiritual weapon should be called the Roarer. The one that carries the master's lightning crossbow should be called the Thunderbolt."

This rune plane is naturally Rosen's second trump card to deal with the Southern Coalition Forces.

At this time, there was still a month and a half before the Southern Allied Forces marched north.

It's time for him to prepare his final move.

(End of this chapter)