The fat boss's energy was beyond Li Fan's expectations, and when he found that the amount Li Fan needed was far greater than his own inventory, the fat boss unequivocally transferred all the dragon skins from other stores. Pen ~ fun ~ pavilion www.biquge.info

In the end, 1,200 pieces of dragon skins were sold at the price of 132 purple dinars, and after completing the transaction, the fat boss also gave Li Fan a delicate piece of agarwood, with a few lines written in Tianlong language.

I'm afraid this is the business card now, right? Li Fan didn't think much about it, and after taking it, he asked people to send the fire dragon skin to the courtyard where he temporarily lived.

And he returned home and began to draw the design of the aerostat.

Aerostat is a general term for aircraft such as airships, ********, and hot air balloons.

The advantage of hot air balloon is that it is not constrained by location, simple and convenient to operate, but the disadvantage is also obvious, that is, it has no power and relies entirely on the wind for its actions.

For a long-distance hot air balloon, it is necessary to choose a high-altitude air flow with the right speed and direction, and move it accordingly in order to complete the flight efficiently. In the absence of weather forecasts, it is undoubtedly very difficult to drive a hot air balloon accurately.

So Li Fan set his sights on another kind of aerostat - airships.

Although airplanes have now become aircraft that dominate the sky, airships, as aerostats with obvious advantages, have not yet withdrawn from the stage of history.

On the contrary, airships have become a very popular thing because of their stability and long stay in the air.

Before the appearance of airplanes, airships were undoubtedly the most advanced flying machines that Li Fan could make now, and they were also the most practical!

And the airplane ..... Because of the change in gravity, the previous aircraft data is basically unusable, and the wind tunnel can only be rebuilt to obtain data.....

Li Fan put down the pen, leaned on the chair and pinched his tired eyebrows, airships are easy to build, hydrogen is easy to make, and electrolyzed water can be used even by children who have just learned chemistry, but what about power?

Mankind has never stopped conquering the skies, and when the first generation of airships was introduced, many pioneers tried to power airships.

However, the real stable and efficient power of the airship was only after the steam engine technology matured.

At the end of the day, it's still the machine!

Li Fan clenched his hands and gritted his teeth and muttered to himself

"Made... Even if it's lifting, I'm going to lift those machines!"

.........

The construction team arrived three days later, along with the first batch of politically qualified slaves.

Liu Han tied these dinosaurs to the stake at the door, wiped the sweat on his forehead, and said excitedly

"Village chief, don't you know, this Tianlongren's mount is really energetic, fast running, strong strength, even if you eat a lot, raising one dinosaur is equivalent to raising five people. ”

Li Fan smiled

"Five people are five people, we have a lot of food, we can raise it, by the way, is Bei Yuming here?"

Liu Han pointed to the kid who was circling around the open space outside

"Well, here, wandering around there, I don't know what I'm looking at. ”

Li Fan walked to Pei Yuming's side, and before he could speak, he was stopped by the excited Pei Yuming

"Village Chief! I have a new idea! I don't think two stories are tall enough! The deeper the foundation, the higher the building can be built, Village Chief, I want to challenge the new building!"

Li Fan: "........ Well, what do you want to build?"

Pei Yuming narrowed his eyes: "I want to build 4 floors!"

Li Fan thought about it for a while, and felt that it would be good to let Pei Yuming accumulate experience first, otherwise how would he build a villa and sell it to those nobles in the future?

After stuffing the previously planned drawings to Pei Yuming, Li Fan took Thor's large number of technical employees to start the vigorous airship manufacturing project.

If you want to save trouble, you can directly sew it into a big balloon, and seal it with glue made of animal skin, but this safety is too poor, especially Li Fan can only use hydrogen instead of helium in the absence of helium.

In this case, it is necessary to pay attention to security.

Fortunately, the manufacturing process of the airship has been very perfect, as long as the gourd is painted.

Airships are mainly divided into three types: hard airships, semi-hard airships and soft airships.

Most modern airships are soft airships, but now, what Li Fan wants to build is a hard airship.

This type of airship is an airship that maintains its shape and rigidity with an internal skeleton, covered with skin, and inside the skeleton is a number of free-standing airbags filled with gas that provide lift to the airship.

Li Fan spread out the dragon skin that had been laser-cut by the dog's eggs one by one.

Old Thor's family built a skeleton out of wood, while Old Thor looked curiously at the drawings that Li Fan put aside with his crossed hands.

After looking at it for a moment, Old Thor sniffed

"Village Chief, can this thing really go to the sky?"

Li Fan glanced at him

"Of course you can!"

Old Thor smacked his lips and looked suspiciously at the heavy wooden frame being built not far away

"I don't believe it!"

Li Fan sighed and put down the fire dragon skin in his hand

"Believe it or not, come over and help me now!"

Old Thor pouted, although he admired the young village chief's things very much, but such a heavy wooden frame flew into the sky?

When you're a bird?

It was tossed like this for days.

The whole project was finally completed.

In the excited, suspicious, and excited eyes of a group of people, Li Fan took a deep breath and walked to the side of the airbag responsible for lifting the water electrolysis device modified by the solar panel of the dog's egg.

The airship was huge, and the interior of the airship was stuffed with several huge hydrogen balloons sewn from dragon skin.

The skeleton is composed of a longitudinal girder with 24 long pestles and 16 frames, and a large number of longitudinal and transverse cables are used to enhance the structural strength.

The outside of the hull frame is covered with a skin made of tarpaulin. In order to be as concealed as possible, the skin was painted pale blue, and there were 17 airbags in the hull, with a total volume of 12,000 cubic meters and a total buoyancy of 13 tons.

The multi-airbag can also play a role similar to the water trap on the ship, so the safety of the flight is greatly improved.

Since he couldn't build a qualified air valve, Li Fan could only make the buoyancy generated by those airbags about the same as the weight of the airship itself, and the biggest source of buoyancy was a huge air bag.

When it was lifted off, hydrogen was produced by an electric water electrolysis device and rushed into the air bag, but because the speed of hydrogen production by water electrolysis was extremely slow, Rao Li Fan used the method of electrolyzing soda ash water in the industry, and it took nearly a month to fill these air bags.

For this, Dogan paid all the rest of his spare solar panels...........

Li Fan stuffed the bamboo tube bonded with cowhide glue into the simple air closure of the air bag, and then pulled down the electric switch.

The water electrolysis generator, which had twelve panels connected in series, began to vibrate slightly. As the hydrogen is poured in, the water level in the tank also begins to drop.

In everyone's shocked eyes, the very huge flying machine began to rise slowly, and the ropes used to hold the airship in place began to straighten.

Xia Xiaohua raised her head, looked at the shadows cast in the sky, and muttered to herself

"Is this the power of physics......