Wedel told Hai Ge that the truly wise man is the one who thinks he knows nothing, and that such a person usually turns himself into a sponge, tirelessly absorbing the nourishment of knowledge, rather than being self-righteous and boastful all day long. They are wise men, and always painful wise men, because the more knowledge they acquire, the more they realize that they are small.

In fact, even if a person can live for 100,000 years and study every day for 100,000 years, it is impossible to understand every phenomenon that occurs in the universe and understand the essence of every science and technology.

The ocean of knowledge is vast and profound, like the dark background of the universe, flowing freely in infinite space. But when darkness is replaced by light, boundaries appear, and people are immersed in new discoveries, thinking that they have seen through all the previously unknown realms, and it is usually difficult to break through the limitations of light in the future, and have the courage to go into another darkness and explore from scratch.

"Kid," Wedell said earnestly, "that's what I think of the U-star scientific community." This is not the case in the earth science community, which is still in its infancy, and it is because of your scientists that I have the opportunity to help save the blue planet. ”

Hai Ge blushed and nodded, this was the only way he could apologize and prove that he was humbly taught.

The conversation returned to the Fire Ian.

Wedel's light fu-fu-ship model glittered the hull, and his mind imagined Elle's beautiful red hair. He touched a red dot on the display, and the three-dimensional picture projected on the wall immediately switched, and Hai Ge saw an extremely detailed diagram of the ship's internal structure, so detailed that even the size and quality of each part were clearly marked.

"As you can see, the hull of the Hoi is only 42 feet, or 13 meters, but it has to be divided into three compartments: a manned compartment, a reserve compartment and a fuel compartment," Wedel said. The pilot's size couldn't be changed, and in order to make him as comfortable as possible during the flight, I had to keep the storage and fuel compartments as small as possible. At this point, GVR glasses play a terrific role. As long as the driver can sit in and adjust the seat to his satisfaction, he can enter the illusion and enjoy the various natural ecosystems on the earth, I mean one of the four seasons of spring, summer, autumn and winter. The GVR glasses are housed in the electronic console of the crew cabin, and 309 sensor probes are distributed around the seats. ”

"While the ship is moving, the pilot spends most of his time in the Shadows?" Hai Ge suddenly thought of the free impact of paramagnetic high-energy rays. If you are in a network of 309 probes for a long time, can the driver stand it?

Wedel understood what he was worried about, and explained: "Don't worry, the GVR Shadow Glasses put into the Huoyi have been modified by me in the software, and only the ordinary earth environment is retained in it, and it will no longer produce a strong impact of electromagnetic waves, so it will no longer cause damage to the brains of human beings on Earth." But the most noteworthy sense of immersion is not diminished by the use of different software. ”

"Oh......" Hai Ge's tense nerves relaxed, and he was sweating just now.

"You should be more worried about the spacecraft's oxygen supply system than you would be about GVR glasses," Weedel said. Earthlings need oxygen to sustain their lives, and the journey to the galaxy is long, and ordinary feeding equipment is difficult to ensure the supply of oxygen throughout the journey, so I have to abandon the existing equipment on Earth and create a new air circulation system with a small size but high oxygen production rate. The most commonly used method of oxygen production on earth is to catalyze hydrogen peroxide with manganese dioxide, or to decompose potassium permanganate, etc. Compressed air is also made, and it can even be used as a driving force for certain mechanical instruments. These methods are useful, but they are not suitable for the Hoiren, as they usually require large volume and mass production equipment, and oxygen production efficiency is very low. My approach was to connect the fuel used by the ship's propulsion system to the oxygen production system, which was more like a combination of the two, and the work of producing oxygen started when the ship consumed fuel to travel. When the spacecraft stops flying, the excess oxygen is stored in metal bottles, and it can be used for at least another 200 hours, which is enough time for the spacecraft to be ready to set sail again. ”

"Mr. Wedel, the combined use of the spacecraft's propulsion and oxygen supply system is indeed a commendable innovation, but my barren and dull brain thinks that combustion means oxygen consumption, and that this process of movement of matter will only suck more oxygen from the spacecraft, so how can it contribute oxygen in reverse?" Hai Ge asked, scratching his head.

Wedel asked rhetorically, "Really?" So how does the oxygen-deficient sun emit a flame-like bright light, making people feel that it is burning? ”

"This ......" Hai Ge couldn't answer, so he had to shake his head to indicate that he didn't know.

"Seventy-one percent of the gas in the core of the sun is hydrogen and 27 percent helium, and the two gases are fused under pressure, producing heat that causes the sun to glow, as if it were spontaneous combustion, without the involvement of oxygen," Wedell said. The fusion engine, which replaces liquid hydrogen and oxygen to power spacecraft, is powerful enough to propel any spacecraft through space. Therefore, the use of nuclear as fuel for spacecraft is a leap forward for the earth's space industry, marking that they are a big step closer to the average level of space technology. ”

"So you're planning to use nuclear fuel to propel the Hoi Ren into the voyage!" Hai Ge understood, but then asked: "There is only hydrogen and helium in nuclear fuel, where does the oxygen in your air circulation system come from?" ”

Wedel nodded approvingly, "Well, that's the question worth answering." My approach is simple: install a miniature oxygen generator next to the fusion engine that produces and compresses oxygen. The device is connected to the engine by a metal tube that absorbs the excess hydrogen from the fusion process. Hydrogen is combined with oxygen at high temperatures to form water, which in turn flows through alloy water pipes buried in the building materials throughout the ship's inner compartment, and the oxygen is restored through a hydrogen-oxygen electrolysis system. As for the raw materials for the production of compressed oxygen, you don't need to worry about the lack of raw materials, after using nuclear fuel, the need for oxygen raw materials for the spacecraft is nearly 2,000 times lower than that of the earthlings through their existing equipment, that is, the raw materials that were originally only enough to be used on the earth for one year can be used on the Huoyi for nearly 2,000 years. ”

The principle of the design of the oxygen circulation system on the Huoyi has been explained very clearly by Wedel. At this time, Haige looked at the structure of the spaceship in the projection, and had a certain idea of the pipes that were zigzag and connected to each other.

According to the diagram, the propeller is installed next to a small fuel tank, which is a standard circle, because the circle is larger and can store more fuel.