This civilization is very strong, but the technology tree is a bit crooked

The sun is the closest star to the blue star.

Its light and heat are the root of all life on Blue Star.

Through the nuclear fusion effect of the core, the mass of 4 million tons per second is completely converted into energy.

In the form of solar radiation, it spreads to the vast cosmic space.

Even if Blue Star can only receive one-two-billionth of it, at the same time this one-two-billionth.

30% will be reflected by the atmosphere into space, and 23% will be absorbed by the atmosphere.

The remaining 47 percent does not reach the surface.

But even so, its irradiation power has reached 80 trillion KW.

The energy irradiated per second is equivalent to the energy released by burning 5 million tons of standard coal.

The average power to each square meter of the surface reaches 630W to 700W, and the daily average exceeds 5 kWh.

"A daily average of 5 kWh of solar energy is matched with a conversion rate of 84.6 percent of this solar cell film."

"Such an area of ​​1 square meter can obtain 4.2 kilowatt-hours of electricity a day."

"If the drone is far away from the surface, beyond the clouds, and enters an altitude of 5,000 meters."

"Without the occlusion of clouds, it should be no problem to convert the electric energy converted by this 1 square meter fuselage area to more than 6 kWh."

"The higher the altitude, the stronger the radiation from the sun, and the more power the drone can get."

"If you leave the troposphere and enter the stratosphere at an altitude of 10,000 meters, it is estimated that the electrical energy converted by 1 square meter should reach 8 kWh."

Chen Yi recalled some information parameters of the sun shining on the planet, took out the paper and pen, and wrote down the design points of the drone on which the sun never sets.

First of all, the aerodynamic layout is better, which is the foundation.

The weight control of the fuselage should be as low as possible, which is the core.

Finally, the surface area of ​​the fuselage should be as large as possible, which is the key.

Based on these three elements.

Chen Yi thought for a while, and drew the general configuration of the drone on which the sun never sets.

It is 2.8 meters long, 2.5 meters wide at the widest point of the wing, and 0.54 meters high including the landing gear.

It has wide wings, an extended vertical and horizontal tail, and a streamlined fuselage that conforms to the aerodynamic layout. The overall shape is flat and flat, similar to the shape of a stingray aircraft.

Determine the shape of the drone.

Chen Yi used the fluid equation and the data obtained from the last test flight.

Start to improve some parameter details of the aerodynamic layout of the fuselage.

Such as the angle of the wing, the radian of the fuselage, the vertical angle of the empennage, the horizontal angle, the balance angle, the width and height and so on.

After several hours, the design of the aerodynamic layout of the fuselage was completed.

Chen Yi roughly calculated and obtained the lift coefficient and drag coefficient of this fuselage structure.

"The theoretical lift coefficient has reached 2.38, and the zero-lift drag coefficient at supersonic cruise is as low as 0.028"

"Next, there is the material of the fuselage.

This time, the solar cell film will be added, and the fuselage will use a three-layer composite material.

The innermost layer uses carbon fiber as the base frame, and the middle is a layer of solar cell film.

The surface is a layer of transparent beryllium oxide ceramic, which acts as a thermal barrier protection, as well as physical protection.

The engine also needs further improvement.

In addition to the need to increase the size of the engine, electric field propulsion replaces combustion to do work. After all, it is different from ordinary combustion engines, and some details also need to be modified.

Because the explosion of ion propulsion is insufficient, the stamping structure of the intake channel needs to be enlarged by 2 percentage points to reduce the resistance of intake air.

The combustion chamber is replaced by electric field acceleration, without combustion expansion, the rear injection channel needs to be reduced by 2.5 percent.

The electric field acceleration chamber in the middle also needs to grow to a certain extent.”

After Rongfei and his party.

Chen Yi already has a lot of experience in the structure of large drones and the design of large engines.

Although this drone is only 2.8 in length and 2.5 in width, it is far from being called large.

But compared to the drones he designed and manufactured before, which had never exceeded two meters, this was already a big improvement.

It can be said.

This time, in addition to building a drone that never sets.

More importantly, verify his progress and gains in the past 20 days.

"Finally, the most critical solar cell film."

At eight o'clock in the evening, all the module designs were completed.

Chen Yi looked at the solar cell film on the other side.

"Read the message!"

boom! Dense information bloomed in my mind.

Chen Yi worked hard to digest the information.

In addition to the material's melting point, viscosity, and toughness, these external parameters are found.

Others involved the real transformation principle and manufacturing process, and he found that he was sure at first sight, but his eyes were dumbfounded.

"These processes and principles should be a kind of quantum technology. Through special quantum processing, the photoelectric effect can be improved to the extreme, the internal resistance can be reduced, and a microscopic light-gathering structure can be manufactured at the same time."

"With this background of knowledge, I even started to build Dyson balls and play with sophons."

Chen Yi rubbed his swollen head, feeling a little speechless.

"It seems that it can only be adjusted and upgraded from the solar panels of II-V gallium nitride compounds as the basis."

Chen Yi imported the drawings of the drone into the printer for printing, but he didn't feel too much surprise in his heart.

As early as the test, the conversion rate of this solar cell film is 84.6%.

Chen Yi knew that there was a high probability that this was a technology that involved a field of knowledge that he did not understand at all, and that exceeded the limits of the current scientific and technological foundation.

Seeing that the printer was working normally, Chen Yi went down to the first floor.

Come to the back of the warehouse, the newly expanded laboratory during this time.

Turn on the laboratory's professional-grade chemical preparation equipment and start to prepare II-V gallium nitride compound materials.

Originally, Chen Yi did not know these chemical preparation techniques.

But after several times of virtual learning, under the professional training of the virtual teacher, teaching by example and in-depth education, he has learned to be proficient.

The materials are preheated, mixed in proportion, and the intense chemical reaction causes the liquid to ooze out.

Chen Yi wiped off the oozing liquid, then put in the initial seeds and injected the reducing agent. For the next time, just wait for the compound to grow naturally.

"Done."

Through the equipment observation window, confirm that the reaction growth inside the equipment is stable.

Chen Yi took some time to re-make an unstable and safe battery.

[Item: Ultra-high-energy carbon-silicon lithium battery]

[Attributes: Energy x41.1, Safety x10 (-7.8), Strength x19.2]

The three core attributes are still unpretentious.

Among them, the safety attribute from minus 8.8 → minus 8.4 → minus 7.8 represents the progress of Chen Yi's manufacturing process.

"Yes, technology has improved, and I'm still a genius."

Chen Yi admired his advanced technology, carefully moved the battery to the forklift, and carried a fire extinguisher in his hand, carefully went to the work area on the second floor.

Going back to the work area, the various components of the drone have been printed.

Chen Yi checked it again, reset several defective components to print, and then went back to the first floor.

The prepared solar panel is dried with liquid moisture.

Chen Yi began to manufacture the final product according to the parameters and dimensions of the fuselage, such as slicing, shaping and series connection, splicing, lamination, packaging and other processes.

After scrapping a dozen battery membranes.

A set of upper and lower sets, like the protective armor of the drone, the solar battery module that almost completely fits the fuselage is officially released.

Take solar battery armor, carbon fiber components, engine components, spend some consciousness waves to superimpose and upgrade accessories such as communication, radar, hydraulic wheel sets, and unsafe batteries.

After some assembly.

Soon, a black drone shaped like a devil fish appeared in front of Chen Yi.

[Item: Photodynamic Stealth Drone]

[Attributes: energy x41.1 (!), speed x10.3 (-3.8), quality x21 (-5), stability x35 (-19), strength x13, communication x31.7, radar shooting x36.6, avionics x34.5, beautiful x11.8, battery life supplement x44.6]

[Note: This is an ion-propelled stealth aircraft designed with photodynamic energy, which is a big brain hole.

It's a pity that the instability of the energy source has increased the risk of it taking off and exploding ten thousand times.

The added light kinetic energy kit is too cumbersome, affecting speed, stability and quality]