Chapter 1943

Chang sun Chong obviously didn't have much interest in this issue, but seeing that everyone was discussing it, he had to glance at it and replied, "two miles is two miles."

"I don't think so."

Du Gou held his chest in his hands. He seemed to have different opinions. He also looked down and said, "I'll see a mile and a half."

Zhang Feng nodded and did not refute. He recorded everything they said in his book.

These are important data. Even if it is a mile and a half from the ground and the hot-air balloon has stopped in the air, it shows that the hydrogen can only support the weight of four people and reach a mile and a half in the sky.

If you want to fly higher next time, you need to add more hydrogen, at least more than this time, so that you can basically fly higher than this time, which can be used in military.

On the contrary, if you want to fly lower, add less hydrogen. At least a little less than this time, you can fly lower than this time. In this way, it can be used in agriculture.

After recording everything, Zhang Feng was just ready to speak. A cold wind blew and felt the cold. He hurriedly said, "throw two sandbags down."

Chumo and others made overheated balloons before. Naturally, they also know what this sandbag is for. It's nothing more than reducing the load, so they can use the wind direction to shift direction. They understand in their hearts, so they put a sandbag in their hand and threw it down together.

As the weight of the hot-air balloon decreased, a cold wind hit and the direction slowly began to change.

Soon, the hot-air balloon began to turn sharply downward and float downward.

Zhang Feng sat in the basket with a pen in one hand and a notebook in the other, recording the wind direction and the offset speed of the hot-air balloon.

Chumo and Chumo are snuggling together. This time, it's strange that they don't shout. Maybe it's because of curiosity. The three of them stare at Zhang Feng's book tightly and have some doubts

The eldest son couldn't help but say, "Fengzi, what are you recording with a book in such a strong wind?"

Zhang Feng glanced at Chang sun Chong angrily. "You know a fart. If I don't record and experiment again and again, how many times can you live? I'm afraid I didn't last time."

With that, he ignored the three guys.

However, his words made Chang sun Chong and others feel uncomfortable.

I really think I'm a white mouse.

The last experiment?

Resentment belongs to resentment. On second thought, the boy is still responsible.

I also know that I won't do all reactive experiments.

Thinking, Du Gou looked at Zhang Feng and asked, "Feng Zi, what are you recording? Take it out and have a look."

Zhang Feng frowned, put down his pen and glanced at the three: "you don't understand. It's no use showing you. At this time, you can see how far we are from the ground?"

Du Gou gave a sound, but did not refute. He glanced down and said in surprise, "it's almost here, less than half a mile."

As soon as the voice fell, Chumo and Chumo stood up and looked down. Sure enough, they were not far from the ground. They were almost there. They cheered, "here, here."

Zhang Feng glanced at Chumo and others angrily: "you'll be there when you arrive. What's the fuss?"

Chumo takes a bite and stares at Zhang Feng without saying a word. Chumo cheers with Chang sun Chong and others.

After about a cigarette, the hot-air balloon swayed and seemed to hit something. Zhang Feng quickly got up and glanced down. It turned out that it had reached the ground.

He was about to ask Cheng Chumo and others to go down, but unexpectedly, these guys were more active than him. As soon as the hot-air balloon landed, these guys had jumped off the ground.

Zhang Feng shook his head and smiled, and walked slowly down the hot air balloon.

As soon as he came down, Ma Zhou ran over. He looked forward to Zhang Feng: "mentor, how was it just now? Is there any important news?"

Zhang Feng handed the book to Ma Zhou and said seriously: "Just now we were in the sky about one and a half to two miles, which is related to the hydrogen you injected into the hot-air balloon. Remember, if you want to fly high next time, you should put more hydrogen than this time, and put less sandbags. If you want to fly low, you should inject less hydrogen, and put more sandbags, okay?"

Ma Zhou handed the book to Hao Chujun and nodded, "I see, mentor."

Hao Chujun also nodded, indicating that he understood.

Zhang Feng glanced at the sun in the sky. Seeing that it had gone down the mountain and fog began to rise around, he glanced at the people: "that's it today. I'll talk about it later."

Chumo and others are relieved at last.

The experiment is finally over. Don't suffer.

They kept cheering, as if they were celebrating something.

Zhang Feng took a swipe at the corners of his mouth and thought, do you suffer so much in your own hot-air balloon? These guys.

Thinking, he turned and was ready to leave. At this time, Hao Chujun spoke. He said somewhat lost: "mentor, will you come tomorrow?"

"Tomorrow won't come."