In order to collect very pure hydrogen and oxygen, and even measure their weight, Bo Jue designed a perfect collection system, he measured the volume of the cylinder by using water, which is very simple, and then the Yin and Yang two levels of each glass cover is covered, connected to the cylinder, in the middle of the copper pipe to use the gas cylinder to pressurize, and then began to use the foot pedal to rotate the DC motor, so began to electrolyze water, with the rotation of the generator, the Yin and Yang levels continue to start bubbles, and when you see the water level in the glass cover begins to drop, It means that there is pressure at the beginning, and after a while, use the trachea to pump it, and then wait until the water level in the glass cover drops to a certain extent and pump it again until the trachea can no longer be pumped, and then look at the scale of the pressure mark and record it, and complete the electrolyzed water test.

Oxygen is useless for the time being, so it was handed over to Song Yingxing, because Song Yingxing listened to Zhu Youxiao's narration and could be used to increase the oxygen content of the steelmaking furnace to increase the temperature and train better steel. Hydrogen is used by itself to make hydrogen balloons, which is the Kong Ming lantern that everyone sees in the capital, but there is no light on this Kong Ming lantern, but there is a basket hanging underneath, and inside the basket is Bo Jue Bo Jue holding a cylinder.

The design of this hydrogen balloon is interesting, it is made up of three small balloons, and then a large balloon is covered with three balloons, the small balloon is sewn from tanned calfskin, the seams are sealed with glue, and a copper pipe is attached to the bottom to the cylinder of the basket. The copper tube on the cylinder uses a two-way switch, and while the air is deflated, the air tube can be used to pump the hydrogen from the inside of the small balloon to pump the hydrogen back to the cylinder, and the flight altitude of the balloon can be controlled by this device.

This kind of flight test is full of great dangers, and under normal circumstances, such dangerous experiments rarely occur in Chinese society, but young people like Bo Jue are very interested in it, because he is young and has a strong adventurous spirit, and after doing several experiments on the ground, Bo Jue carried out this long-distance flight test, which is undoubtedly very successful.

Now Bo Jue is lying on the ground, thinking about his experience of this flight. In fact, this flight did not want to be as smooth as imagined, after the balloon left the ground, with the continuous change of altitude, the direction of the wind encountered by Bo Jue was also constantly changing, which once made Bo Jue misjudge his judgment, and he himself was afraid of the speed of rise. In fact, Bo Jue did not expect that the clouds in the atmosphere are full of many uncertain factors, and the troposphere cannot be tested when it is on the ground, and can only be discovered at a certain height. In the rising speed, it is also the first time, the rising speed is not too fast, because the higher the height, the smaller the density of the air, and at the same time it will cause the pressure of the surrounding air on the balloon to decrease, and the hydrogen balloon will inflate itself, at this time, if the hydrogen in the balloon cannot be pumped back, the balloon will keep rising, and the final result is to reach a certain height, either the strength of the material is enough to withstand the expansion force, no longer expand, and stay at this height, or it will be tragically torn apart, or even exploded. The result was a ruined ball. Bo Jue was lucky this time, when he found that the balloon was rising faster and faster, he was not afraid of losing his mind, but quickly began to pump back, but at this time he had entered the troposphere, and the direction of the balloon's flight had changed, deviating from the predetermined flight path, and the landing site was also deviating from the predetermined position, so he was now enjoying the fear of flying by himself, without the sharing of his partners.

When his assistants finally arrived here, they saw Bo Jue, who had fallen asleep from exhaustion. The frightened assistants thought that Bo Jue had been killed, and wept bitterly one by one, or the cry woke up the sleeping Bo Jue, and then it became a joke, and it was not flowers and applause that shared success, but the crying of the audience, but crying with joy is another way of explanation, in general, the flight test was a success.

Bo Jue's flight performance was severely criticized by Song Yingxing and Zhu Ling, Song Yingxing was a gentle and drizzly style of earnest teaching, and Zhu Ling kicked two feet directly in the buttocks, they didn't want to lose such a smart disciple, Bo Jue naturally understood the meaning of the two masters, and agreed to them with a smile that he would no longer take risks casually. But Zhu Youxiao's reaction was unexpected, he not only supported this experiment, but also put forward his own opinions on it, but he also did not support Bo Jue's own personal ascension every time. Zhu Youxiao's suggestion is to create a solid shell, and use this solid shell to stop the expansion of the balloon at high altitude, and then achieve the purpose of controlling the flight altitude.

In fact, Zhu Youxiao's goal is to create a practical airship, hydrogen balloons are fun, but they are just playing, there is no greater role, only the production of airships has a certain use value, in this era, land transportation is very inconvenient, even if the cement is manufactured, this kind of expensive things cannot be used to build roads, and the current output is simply not available. And the airship is one of the most feasible ways to fly this kind of aircraft at present, first of all, the problem of hydrogen can be solved, Bo Jue's electrolysis water scheme comes from his own experiment, industrial production is not realistic now, but small production can still be done, at present it can be used in a small range, such as transporting goods at the ferry, which is much faster than using a ferry, the only and biggest disadvantage is that the direction is not easy to control, but after using a fixed structure, you can install a human booster, Let's say a fan on a foot pedal. Zhu Youxiao would not directly tell Bo Jue these methods, but only tactfully offered to let him continue to experiment until he found a method that could actually be used.

When Bo Jue first started the experiment of electrolyzing water to make a hydrogen balloon, he found that a balloon filled with hydrogen would burst at a certain height, so in order to prevent it from bursting, he adopted the method of putting a layer of cowhide on the outside, and this hydrogen balloon was the original model of a soft airship. Now Zhu Youxiao has proposed that he needs to continue to develop and make this hydrogen balloon have a certain practical value, that is, it must not only be able to carry people to fly, but also be able to carry a certain amount of cargo, which requires the balloon to be made very large and very firm, otherwise it will not be able to carry goods.

Bo Jue tried to use hard jujube wood as a scaffold, covered it with cowhide, and then still used three balloons to inflate, and the result was quite successful, a square balloon can carry a big fat pig. After the production was successful, Bo Jue tied the simple airship traction direction with a rope, and made a big circle in the test site, but the height was limited to a certain extent, and it could only be used within a certain range, and the direction control could only be determined by the rope on the ground, and the height was also determined by the rope, which was undoubtedly a big shortcoming.

What inspired him was play, Bo Jue was relatively young, and it was naturally a nature to be playful, not to mention that he was not short of money now, not as poor as he was when he was a child, he and his small team were inspired by swimming fish by the river when they were outing. Bo Jue made the airship into the shape of a fish, and even designed the decoration of the fins to be used as a means of balance, and then made two fish tails to be used as the driving force for progress, but everything else was good but the forward momentum was still insufficient.

Bo Jue's observation is very strong, although the inspiration he got from the swimming fish is not very helpful, but he is still in the continuous improvement of ideas, for a while he also wanted to move the small steam engine to the airship, but unfortunately no matter how small the weight of the steam engine is, the airship can not carry, the main reason is that the airship is still too small. When Bo Jue saw the foot fan in Zhu Ling's house, he was inspired again, so he replaced the fish tail on the airship with a foot fan, and changed the air outlet to a way that can do optimal activities, so that not only can the exhaust air flow be used to push the airship forward, but also control the direction of the airship's sailing, although the power is not particularly large, but it is much stronger than the fishtail, this is a problem that cannot be solved by later generations, and Bo Jue can only make this appearance with his best efforts.

Through the study of hydrogen, Bo Jue knew that hydrogen was flammable and could even explode, so he made strict restrictions on the use of airships, and it was necessary to avoid open flames approaching airships to prevent the explosion of fire. In order to use it in practical life, Bo Jue established an airship manufacturing factory under the guidance of Zhu Youxiao, and the apprentices established by Song Yingxing opened another cylinder, and Bo Jue was responsible for the manufacture of hydrogen, and the by-product of hydrogen production was oxygen, which was also sold to Song Yingxing's steelmaking laboratory.