Komsomolsk-on-Heilong Amur.

Helped Ge Xiaotian drive three planes, and the white-bearded old man who still hadn't retired, wrapped in a heavy military coat, stood in the airport hall like a bear, welcoming the first batch of students of Tiancheng Secondary School who were finally arranged.

"Oh, cute little ones, welcome to Ice Bear's largest resource center, shipbuilding center, aircraft manufacturing center, satellite launch center, and Far Eastern Military Center!"

The trainee squad leader was a little confused, subconsciously held the old man's outstretched palm, and replied through the portable translation player: "Hello, respected general. ”

The latter saw that the player was a little stunned, and quickly reacted, raised his head and exhaled, and covered up: "It's unbelievable, it's such a 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 hurriedly withdrew his arm.

"Don't be afraid, your boss and I are brothers in life and death, we fought together in the blue sky, it is a legendary story that can be sung and cried, if you don't mind, as long as the whole box of vodka, we can talk for more than half a month!"

“......”

"Haha, don't mind, I'm idle all day, in Huaxia's description, it should be called ...... Talker?"

"General, you are truly versatile. ”

"Thank you for the compliment, I am an inspirational man who aspires to be ...... 'Bai Xiaotong'!"

"Oh, you also play the Dragon Continent, and you know the NPC who is responsible for delivering the message. ”

"I said, I'm idle, but when it comes to playing games, I'm the best of the best!"

"Really?"

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

"You're amazing!" said the team leader.

"It's just a pity that my hands are black, and I touched a professional weapon that is not in the team, and I can't trade it yet. ”

"It can be a souvenir. ”

"Very good advice......"

Chatting all the way, the group took a car from Komsomolsk Amur to the slightly deserted space center.

Visiting, introducing, arranging accommodation, arranging study venues......

Lunch break.

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

"The senior is really good!"

"Yes, it's a general who came to pick us up!"

"But what is the friendship between life and death in the blue sky......? Seniors participated in that war last year?"

"Shhhh

"Ahem, in other words, the senior is really bullish, and he can find a launch center to arrange for us to study on the spot. ”

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

"Understand the squad leader!"

Afternoon.

As the saying goes, it's easy to get money to do things, and Maozi did a good job of training.

On-site teaching.

The old man stood in the main control room, "Children, let me assess the learning progress of everyone." However, I know that you are new to school and don't know much about aerospace, so don't worry, it's just some simple questions. ”

The twenty students below nodded in unison.

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

"The geosynchronous orbit of the parent star is at an altitude of 35,800 meters, and as the name suggests, it orbits for the same time as the Earth's rotation and remains relatively stationary with the ground. Synchronous orbits have many uses, mainly for communication and positioning, and theoretically only three are needed to complete global communication. In addition to the geosynchronous orbit, there is also a polar orbit with an orbital inclination of 90 degrees, which is used by most survey and positioning satellites because it allows for global scanning. The GLONASS signal enhancement system uses the latter. ”

"Pretty answer!"

The white-bearded old man was a little surprised, "Two, do you know about launch vehicle fuel?"

"The launch vehicle is mainly used in two fuels, liquid oxygen, liquid hydrogen and liquid oxygen kerosene. Most of the booster rockets and 1st and 2nd stage rockets use liquid oxygen kerosene, because the energy released by hydrogen combustion is higher than that of kerosene, but a large amount of energy is required to produce hydrogen, and liquid hydrogen is a low-temperature 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 made the mistake of choosing the space shuttle, which is much more expensive to launch and maintain than the launch vehicle, and of course, there is the accident rate, two of the five space shuttles were completely destroyed, and at present, North America has no ability to transport astronauts to the International Space Station, so it can only rely on your ......"

The trainees try their best to answer according to the answers given by the instructor when they come, as for the real difference between the two......

The purpose of manufacturing the space shuttle is to reuse and save costs, to meet the requirements of being able to travel to and from the home planet and space at any time and at any time, and to a certain stage of development, which is the basis of the spacecraft.

However, at present, due to the constraints of technology and materials, it is more expensive to maintain once than to build a new one.

The launch vehicle is to invest less, gain more, shoot one and lose one, just like what Qian Lao said to the generals when he returned to China, the big monkey in the sky......

Therefore, it is almost impossible to recover, and even the manned spacecraft that can be recovered are far inferior to the former in terms of transport volume and comfort.

The launch vehicle is equivalent to a transitional product suitable for the past ten years, and when China completes the innovation of space engines, space technology, and space materials, it will definitely face the same choice as North America.

In addition, the space shuttle is similar to the take-off and landing of an airplane and can accurately land at a designated place, while the recoverable launch vehicle has to make a lot of estimates, according to the orbit and environmental variables, to determine where it will land, which cannot be controlled.

"I am extremely satisfied with your answer, so student No. 3, please tell me about the principle of the launch vehicle......

"Launch vehicle ......"

"Student No. 4, solve this formula......"

Tiancheng set up remote control courses, not to build rockets, play satellites, nor to build space shuttles and spaceships, but to develop ultra-large new energy transport aircraft.

It can transport building materials cheaply to inland remote cities, and is an important means of transportation for the development of Northwest China.

After all, there are either mountains or deserts, or no man's land, and before the railway is fully opened, there is really no way to do it except to find a way by yourself.

In addition, the establishment of this course will also train aerospace researchers for the nine institutes, so that they can sell their own solar power and new energy power in the future.

And the knowledge about launch vehicles is only the first classified course, and twenty cadets have long been trained by the systematic university and completed the assessment of the organ tower during the military training, so all questions must be answered, and only the operation is ......

Of course, learning is learning, operation is operation, manufacturing is manufacturing, and the three cannot be mixed.

"I can't believe it, did you learn this theory from a young age?"

The white-bearded old man became more and more frightened the more he asked.

Cheap housing to replace Bingxiong aerospace technology, this is something that a fool will agree to, and it is impossible for him to give his core technology to Tiancheng according to the group of politicians who only look at immediate interests.

I was going to drag it out for a few months, talk about it casually, and fool the past, but I never expected it......

And that's not all.

At the end of the question, the 20 students brushed up their suitcases, fingerprint verification, pupil verification, and face verification......

？？？

And then......

20 azure SG lettering, lit up from the back of the laptop cover, and the simulation program popped up on the screen.

The team leader proposed: "General, you can command the launch, and if there is a mistake, please correct it." ”

“？？？”

Got into the groove so quickly?

Also, why are you playing so high-end?

The white-bearded old man was silent for a moment, then took out his satellite phone, "Help me contact Ge Xiaotian, the training will cost more! Especially, I must have my house this time, otherwise...... General Ben doesn't agree to this training, it's useless for anyone to come!"

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