My items can be upgraded

Before being promoted to the third level, Lin Yu also had a wave of fluctuations in his heart.

The ability to upgrade is created out of thin air, and the difficulties of machining accuracy can be completely ignored. It has no effect on the experience requirement, so it stands to reason that [-] experience points should be able to upgrade the micro chemical rocket engine.

But the prediction is just a prediction, and he is not completely sure. If the third stage fails to upgrade to a rocket engine, then the plasma propulsion technology for the fourth stage may be a bit hanging.

upgrade!

Feeling anxious, Lin Yu's upgrade didn't stop, and the faint blue brilliance spewed out again and wrapped the flying skateboard before it was exhausted.

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【Batwing Individual Aircraft】

【Level】lv3: 591020/30w

[Introduction]: The bat-wing individual aircraft is equipped with a miniature liquid rocket engine and a high-altitude maneuvering response system. Theoretically, it can operate in a cosmic vacuum environment, with a theoretical speed of 600 km/h and a theoretical endurance of 1 hour.

[Evaluation]: Theory is just theory, first you have to consider how to send yourself to heaven.

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"I thought it would be called the Green Goblin Skateboard."

After reading the attributes, Lin Yu finally felt relieved.

The reason why a rocket engine is a rocket engine is that its propellant contains oxidizers and working fluids, and does not need to contact the outside air, so the batwing individual aircraft can already fly in space.

The speed and battery life are also very good. One hour of battery life is more than enough to handle most situations. The speed of 600 kilometers per hour is far faster than all kinds of supercars. After all, it is only a micro engine, and it is impossible to compare it with a real aircraft rocket. Only 600 kilometers If there are no protective measures for the speed per hour, most people will not be able to handle it.

"Xiao Ke, scan and record the structure, build a three-dimensional model for archiving, extract the backup control system and balance system, and analyze the propellant composition..."

The value of the miniature liquid rocket engine is very high, so Lin Yu paused for a while, recorded various data and took some propellant samples.

After nearly half an hour of fiddling, he continued to click on the upgrade.

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【Batwing Individual Aircraft Type 2】

【Level】lv4: 291020/30w

[Introduction]: The second-generation batwing individual aircraft, equipped with plasma propulsion technology and cold fusion reactor technology, has greatly improved endurance and flexibility, with a maximum speed of 400 km/h.

[Comment]: I used to own a skateboard, but one day my son inherited my father's business. by: Norman Osborn

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The brilliance dissipated, and a bat-wing flying skateboard exactly the same as in Survival Diary II appeared in front of Lin Yu. The original bulky fuel pack had disappeared without a trace, and the 'iron boots' that fixed the legs had become only Pedals with thick, concave, non-slip stripes on the sole.

The speed of the four-level batwing aircraft is reduced by a full third compared to the three-level, but this is also normal. Electric propulsion technology generally has high specific thrust and low thrust, and today's small plasma thrusters even have only a pitiful The thrust of a few Newtons or even a few tenths of a Newton, and the manned speed of [-] kilometers per hour can already scare the experts who study plasma propulsion technology.

Moreover, although the literal attributes are reduced, the hidden enhancement is immeasurable. The biggest advantage of plasma propulsion is the low demand for working fluid, flexibility and controllability, static suspension in the air, subtle attitude adjustment, and high-speed direction change. These are all chemical rockets. Thrusters are incomparable.

After all, the flying skateboard is used for combat and low-altitude flight. Speed ​​is often not that important, as long as it is qualified. Instead, flexibility is the most indispensable.

What's more, Lin Yu is actually a drunkard who doesn't want to drink. All he wants is plasma propulsion technology and micro-nuclear reactor technology.

In fact, the second-generation batwing aircraft gave him a big surprise—a miniature cold nuclear fusion reactor!

It may not be intuitive to say that the cold nuclear fusion reactor, and to put it bluntly, this thing is the same thing as the miniature ark reactor in Iron Man. There may be differences in the technical implementation methods, but the essence is the same.

The concept of cold nuclear fusion is somewhat similar to superconducting materials, but it is relative to thermonuclear fusion. Usually nuclear fusion requires high temperature, but cold nuclear fusion can be carried out at low temperature and normal temperature. This thing is in the current technological system of the earth. It's just a hypothetical conjecture, Chiguoguo's black technology.

Although he secretly touched porcelain for a while in Survival Diary II, Lin Yu didn't expect to be able to upgrade this thing. It would be nice to be able to upgrade to a high-end nuclear battery.

I'm afraid that most of the 30 experience this time was spent on this small reactor. It can be said that the plasma propulsion has this level of luck.

"What am I? A Green Goblin and Spider-Man hybrid?"

Regardless of studying the structure of the batwing aircraft, Lin Yu couldn't wait to step on the skateboard. After looking at the venom suit on his body, a strange thought came to him. Then he shook his head and threw it out of his mind, and started the skateboard to fly freely in the room. .

The plasma thruster is very stable and flexible, just like playing on a skateboard or a balance car. The legs do not need to be fixed at all. After the center of gravity of the body is tilted, the balance control system inside the aircraft will naturally adjust the posture according to the center of gravity, and firmly support the body on the skateboard. In fact, this kind of carefree and comfortable flying method is by no means comparable to taking an airplane or other vehicles. For a while, Lin Yu couldn't help being addicted to it. After playing for more than ten minutes, he still felt a little unsatisfactory, just like in the Survival Diary video. Open the window and fly into the night sky outside the building.

"Damn it, Meteor!"

"Your shooting star is on fire, that's obviously Gatling!"

"Damn Gatling, I'm still Iron Man... Fuck! Fuck! There's really someone above you!"

"It's a prop master! Cliff is the master prop master! The master really made a flying skateboard!"

Chapter 275 You Are Tired of Looking at It

"Oh shit!!!"

In the night sky, the howling wind echoed endlessly with wanton and carefree shouts.

The icy wind kept taking away the body temperature, but Lin Yu felt that his whole body was boiling with enthusiasm.

No wonder there are so many people who like drag racing. The pleasure of galloping at such a high speed is really unstoppable.

After wandering around in more than a dozen circles, countless aunts and Sao Nian who were strolling at night raised their heads to look up and make a commotion. Lin Yu was ready to go back.

But just as he was about to go back, he had another thought, twisted his body and turned his center of gravity, and drove the batwing skateboard towards Zhao Xiaolu's house.

Equipment is meaningless if it is not for showing off.

The short distance was nothing compared to the speed of [-] kilometers per hour on the batwing skateboard. In the blink of an eye, Lin Yu was hovering over the Zhao Family Martial Arts Hall with the faint blue flames.

At this time, the yard was dark, but the house behind the yard was brightly lit, and through the window, one could see the kitchen dimly. It should be that Zhao Jianwu was cleaning up the housework.

The plasma engine was silent, and Lin Yu didn't bother Zhao Jianwu. He controlled the skateboard and raised it slightly to a window on the second floor.

The window is facing a desk. In front of the desk is a girl wearing a loose panda pajamas and reading an unknown book. This scene is a bit pleasing to the eye.

"I didn't expect to work hard in private."

It was also the first time for Lin Yu to see Zhao Xiaolu's quiet appearance. Normally, she was rather eccentric, completely different from the sweet appearance of a female character, and now this appearance finally seemed to fit her appearance.

dong dong!

Zhao Xiaolu, who was burying his head in the book and slowly flipping through the book, didn't notice the unexpected visitor outside the window. With a thought, Lin Yu first put on the visor of the venom suit, then bounced a spider web to the roof, and fell down like a Spiderman. Come down and tap on the window glass.

"Beauty, do you want to watch a superhero show? I have Spider-Man and the Green Goblin."

When Zhao Xiaolu raised her head and looked out the window, Lin Yu laughed, cut off the spider silk and fell straight down. Just when she was about to scream out, she was caught by the batwing skateboard and swayed left and right outside the window on the skateboard.

"Sorry, I'm not interested in Spider-Man and Green Goblin."