Building madman

Amur Komsomolsk on the Heilong River.

After helping Ge Xiaotian fly three times, the white-bearded old man who is still not retired, wrapped in a heavy military coat, stood in the airport lobby like a bear, welcoming the first-stage students of Tiancheng Technical Secondary School who were finally arranged.

"Oh, cute little guys, welcome to the biggest resource center of Ice Bear, the shipbuilding center, the aircraft manufacturing center, the satellite launch center, and the Far East military center!"

The student squad leader was a little confused. He subconsciously held the old man’s outstretched palm, and replied through the dedicated translator and player: "Hello, dear general."

The latter was a little stunned when he saw the player, and quickly reacted, raised his head and exhaled, and concealed: "It's incredible. In such cold weather, your little hands are still so warm. You remind me of my young lover. I really want to touch it for a while..."

"..."

The team leader quickly withdrew his arm.

"Don't be afraid, your boss and I are life and death brothers. We have fought together in the blue sky. It is a legendary story. If you don't mind, we can talk about the whole box of vodka for more than half a month!"

"..."

"Haha, don't mind, I'm just idle all day long. To use Huaxia's description, it should be called... Talking?"

"General, you are so versatile."

"Thank you for the compliment, I am a man who is inspired to do..."Bai Xiaotong"!

"Oh? You also play Shenlong Continent? You know the NPC responsible for delivering the message."

"I said, I am very free, but when it comes to playing games, I am a master of masters!"

"really?"

"The first pass, the world's first pass! The copy of "Memoirs of a Mountain Village" in the Ice Bear District, I am the leader!" (The two protagonists are chased by demons, and the villain's protagonist jumps off the cliff.)

"You are amazing!" The leader of the team exclaimed sincerely.

"It's just a pity that my hands are dark, and I touched a professional weapon that is not in the team, but there is no way to trade."

"Can be a memorial."

"Very good suggestion..."

Talking all the way, a group of people traveled from the Komsomolsk Amur to the slightly deserted space center.

Visiting, introducing, arranging residences, arranging learning venues...

Rest time at noon.

Twenty students gathered in the dormitory, looking at the vast launch site...

"Senior is really awesome!"

"Yes, it turned out that a general came to pick us up!"

"But, what is the life and death friendship in the blue sky? Could it be that... the senior participated in the war last year?"

"Shhh, don't talk nonsense!"

"Ahem, by the way, the seniors are really good at breaking, so I can find a launch center to arrange for us to learn on the spot."

"You can't be lazy in the past few months, and you can't lose the face of our Tiancheng secondary school!"

"Understand the monitor!"

in the afternoon.

As the saying goes, money is easy to do, and Mao Zi has done well in training.

On-site teaching.

The old man stood in the main control room and said, "Children, let me check the progress of everyone. However, I know that you have just entered school and don't know much about space science, so don't worry, it's just some simple questions."

Twenty students below nodded together.

"Then let's ask questions according to the seat order. One, do you know the synchronous orbit of the parent star?"

"The height of the synchronous orbit of the parent star is 35,800 meters. As the name suggests, it travels for a week in its orbit at the same time as the earth's rotation, and remains relatively stationary with the ground. The synchronous orbit has many uses, mainly for communication. In theory, only three satellites are needed to complete global communication. In addition to synchronous orbits, there is also a polar orbit, which has an orbital inclination of 90 degrees. Most survey and positioning satellites use polar orbits because they can achieve global coverage. . The GLONASS signal enhancement system uses the latter."

"A beautiful answer!"

The old man with white beard was a little surprised, "No. 2, do you know the fuel for launch vehicles?"

"Carrier rockets mainly use two fuels, liquid oxygen, liquid hydrogen and liquid oxygen kerosene. Most booster rockets, stage 1 and 2 rockets use liquid oxygen kerosene, because hydrogen combustion releases higher energy than kerosene, but hydrogen production requires a lot of energy. , And liquid hydrogen is a cryogenic liquid, which is not easy to store and transport..."

"Three, do you know the difference between the Ice Bear rocket and the North American Space Shuttle?"

"From the very beginning, North America mistakenly chose a space shuttle whose launch and maintenance cost is much higher than that of a launch vehicle. Of course, there is also an accident rate. Two of the five space shuttles were completely destroyed. At present, North America has no ability to transfer to the International Space Station. To transport astronauts, you can only rely on your country..."

The students tried their best to answer according to the answers given by the instructor when they came. As for the real difference between the two...

The purpose of manufacturing space shuttles is to reuse and save costs, to meet the requirements of being able to go back and forth between the parent planet and space at will, and develop to a certain stage, which is the basis of the spacecraft.

However, currently limited by technology and materials, it is more expensive to maintain it once than to build a new one.

The launch vehicle is based on small investment, big gains, shooting one and losing one, just like what Qian Lao said to the generals when he returned to China.

Therefore, it is almost impossible to recycle. Even the manned spacecraft that can be recycled is far less than the former in terms of transportation volume and comfort.

The launch vehicle is equivalent to a transitional product suitable for the past ten years. After China has completed its aerospace engine, aerospace technology, and aerospace materials innovation, it will definitely face the same choices as North America.

Moreover, the space shuttle is similar to the airplane's take-off and landing, which can accurately land to a designated location, while the retrievable launch vehicle requires a large number of estimates. According to orbit and environmental variables, it is impossible to determine where it will land.

"Your answer makes me extremely satisfied, then student number three, please tell me about the principle of the launch vehicle..."

"Carrier Rocket..."

"Student #4, solve this formula..."

Tiancheng offers remote control courses not to build rockets or satellites, nor to build space shuttles or spacecraft, but to develop super-large new energy transport aircraft.

The ability to transport building materials to remote inland cities at a low cost is an important transportation tool for the development of the Northwest.

After all, there is either mountains or deserts, or no man’s land. Before the railway is fully opened, there is really no way to do it except by finding a way.

In addition, the opening of this course can also cultivate aerospace researchers for the nine institutes, so as to facilitate the promotion of their own solar power and new energy power in the future.

The knowledge about launch vehicles is only the first classified course. Twenty trainees have already passed the system university training and completed the tower assessment during the military training. Therefore, all questions are answered, only the operation...

Of course, learning is learning, operation is operation, and manufacturing is manufacturing. The three cannot be confused.

"It really makes me unbelievable. Did you learn this theory since you were young?"

The old man with white beard became more and more frightened when he asked.

The replacement of ice bear space technology with cheap houses is something that a fool would agree to. It is impossible for him to give Tiancheng his core technology according to the group of politicians who only look at immediate benefits.

I planned to drag the class for a few months, talk casually, and fool around, but I never expected...

This is not over yet.

At the end of the questioning, 20 students swiped and picked up their suitcases, fingerprint verification, pupil verification, face verification...

???

then……

Twenty azure blue SG words light up from the back of the laptop lid, and the simulation program jumps out on the screen.

The leader of the squad suggested: "General, please direct the launch. If there is an error, please correct me."

"???"

Entering the state so soon?

Also, why do you play so high-end?

The old man with white beard was silent for a moment, and took out the satellite phone, "Help me contact Ge Xiaotian, the training will cost more! Especially, this time I must have my house, otherwise... the general does not agree to this training, no one will come use!"