The sudden appearance of the white young man startled Joreda. He did not expect that this scientific research dimensional puppet looked completely human, moved freely, and spoke almost like a human being. It could be fake and real.

Qiao Ruida carefully moved forward and pinched the skin of the dimensional puppet Candace. The touch was similar to human skin, but there was no body temperature and the elasticity was not as good as human skin. It wasn't until this moment that Qiao Ruida was sure that the system created was not a real human being, but just a dimensional puppet that looked more like a human being.

"Your name is Candace, right? Is your appearance fixed like this, or can you change it at will?" Qiao Ruida asked curiously.

"Master, my appearance is changed through the camouflage function. If necessary, I can consume part of my energy reserves and transform into other forms. It can be either male or female. You can choose your age, skin color, and appearance at will." Candice He answered respectfully and spoke Mandarin with correct accents, which was better than what many Chinese people spoke.

"You should change your title to Master. It's always a bit weird. Let me think about how to call it appropriately. By the way, just call me boss. This title is more common nowadays. Candace, what do you use? What is the energy, electricity, fuel, or nuclear energy?" Qiao Ruida continued to ask.

"We have two ways of supplying energy. One is to consume your points, master, which is like working for a day, consuming 100 points; the other is to imitate human eating, absorbing food and converting it into bioenergy to supply our activities. Yes. If we use the second energy supply method alone, our appetite will be larger, about twice that of adults.”

Summoning requires points, and maintaining activities also requires points. Although the consumption of one hundred points a day is not large, when the number of scientific research dimensional puppets increases, the consumption becomes very considerable. Fortunately, these dimensional puppets can also be recharged by eating. Even if they eat twice as much as an ordinary adult per meal, it won't cost much money.

"Okay, from now on you should eat to recharge your energy. You can cook three meals a day by yourself." After saying that, Qiao Ruida directly used her golden fingers to copy a lot of pots and pans for Candace, including oil, salt, sauce and vinegar. , stoves, ingredients, and then organized the cooking knowledge he had and transmitted it directly to Candace. With these things, Candace can solve the problem of eating by herself before leaving the dimensional space.

Also transmitted to Candace was relevant knowledge about the Falcon 9 launch vehicle. After finishing this, Qiao Ruida copied a small workstation dedicated to drawing, handed it to Candace, and said: "In the past two days, you sort out the technical drawings of the Falcon 9 launch vehicle, input them into the computer, and keep them for reference. ”

"Okay, boss, I promise to complete the task." This job is not difficult for a scientific research dimensional puppet, and Candace readily agreed.

The Falcon 9 launch vehicle has mature technology and excellent performance. However, SpaceX has already registered a patent for the relevant technology. Therefore, the soon-to-be-established Reda Aerospace Company cannot completely replicate this launch vehicle and can only serve as a reference. . But this is not a problem for Qiao Ruida. Falcon 9 cannot do it. Aren't there other rocket models? Just search on the Internet twenty years later and you won't find too many of the latest launch vehicles.

"Let me search to see what launch vehicles will be available in twenty years." With a thought, Qiao Ruida opened the browser and entered launch vehicle to search. The results were quickly presented in front of Qiao Ruida. Small solid rockets included Kuaizhou series rockets, Jielong series rockets, Hyperbola No. 5, No. , and so on. Medium-sized launch vehicles include Falcon , New Shepard, Long March series, Proton rockets, etc. Heavy rockets include Saturn V, SLS rocket, Falcon Heavy rocket, Long March , Long March , Angara-A and so on. There were so many rocket models, each with different parameters, advantages and disadvantages, which made Qiao Ruida so confused that she almost had difficulty choosing.

"Bang bang bang, Xiaoda, it's almost seven o'clock, why don't you get up quickly. Didn't you say you were going back to the capital for school today? Why don't you get up and get ready." At this moment, there was a knock on the door of Qiao Ruida's bedroom. , the voice of my mother Yao Miaozhi came from outside the door.

Before I knew it, three hours had passed and it was already time to get up and have breakfast. Qiao Ruida quickly withdrew her consciousness from the dimensional space, opened her eyes, and promised, "I understand, Mom, I'll get up right now."

While Qiao Ruida was having breakfast with her family, Du Qingqing pulled two huge suitcases into his villa.

"Hey, Qingqing came so early, have you had breakfast? Do you want me to buy you a pair of chopsticks?" Seeing his future daughter-in-law coming to the door, Yao Miaozhi stood up and greeted her warmly.

"No, Aunt Yao, I've already had breakfast. You don't need to greet me, just eat by yourself." After greeting her boyfriend's family, Du Qingqing sat on the sofa in the living room and waited patiently.

Seeing her girlfriend coming, Qiao Ruida speeded up her meal. She ate three bean buns and a bowl of millet porridge in a few mouthfuls. Then she stood up and said, "I'm full, so I'll drive to the capital with Qingqing. Dad, Mom, Xiaoxue, you can continue to eat, there is no need to come out to deliver."

After giving the explanation, Qiao Ruida went upstairs to the bedroom and came out carrying a small suitcase. Most of his clothes and daily necessities have been placed in the dimensional space, and carrying this suitcase is just for show.

"Qingqing, let's go. Did you come here on your own? Why didn't your aunt come to see you off?" When passing by the living room on the first floor, he called his girlfriend Du Qingqing and walked together towards the front yard of the villa where the car was parked.

"There was a problem with a batch of goods sent by the company abroad, and my mother rushed over to deal with it." Du Qingqing gave one of the two suitcases to Qiao Ruida, and he pulled the smaller one towards the Roadster sports car. Qiao Ruida used the remote control key to open the trunk of the sports car and stuffed all three suitcases inside.

"Qingqing, here are these dried fruit snacks for you to eat on the road. Xiaoda, you must be careful when driving on the road, and always pay attention to passing vehicles and pedestrians. If you feel tired from driving, find a service area, park and rest for a while." The parents still said. After sending it out, mother Yao Miaozhi stuffed a large bag of dried fruit snacks into Du Qingqing's hand, then took her son's hand and gave him many instructions, fearing that his son would be careless and have an accident on the road. As the old saying goes, the mother worries when her son travels thousands of miles, and this is a true portrayal.

"I understand, Mom, you and my dad should also pay more attention to your health. Try to leave Ruida's house to the store managers and clerks, and don't do everything yourself." Qiao Ruida also warned her parents, and then took her girlfriend , get into the car, fasten your seat belt, and get ready to go.

"Brother, Sister Qingqing, you are waiting for me at Peking University. After this summer vacation, I will also report to Peking University." Qiao Ruixue may have just finished breakfast and walked out of the villa before waving goodbye to her brother.

"Okay Xiaoxue, my brother and your sister-in-law are waiting for your arrival on the Peking University campus. Don't let us down." Qiao Ruida put down the car window and responded to her sister. Then she waved to her parents, started the car and drove out. The villa.

"Well, now that my son is gone, the family will be much deserted. In a few months, Xiaoxue will go to the capital to go to school. By then, we will be the only two people left at home. How will we live like this?" Looking at his son's sports car , disappeared at the door of the villa, Yao Miaozhi said melancholy.

"Isn't it still me? If you really feel that your home is deserted, just raise two small animals, kittens or puppies." Qiao Jingkang held his wife's hand and said warmly.

"Forget it about having pets. We stay in the store every day and are so busy that we don't have time to take care of them. Let's go back and continue eating. We have to go to work later."

Returning to the capital this time, only Qiao Ruida and Du Qingqing were in a car, traveling alone. Xie Fei and Li Xiaoshuang have things to deal with and have to stay at home for two days before setting off.

Today is the 16th day of the first lunar month, and the expressway has already passed its toll-free period. The number of vehicles on the road has returned to its normal state, and the journey is smooth. It only took three hours to reach the capital. Contrary to the situation on the highway, there are more vehicles and pedestrians on the roads in the capital, completely returning to the state before the Spring Festival. There is still a traffic jam when there is a traffic jam, and the number is still restricted when the number is restricted. Fortunately, the Roadster sports car driven by Qiao Ruida is a new energy model and is not subject to the number restriction.

Before noon, Qiao Ruida and Du Qingqing returned to the Shijia Hutong courtyard. It had been unoccupied for more than half a month, and a thin layer of dust had settled in the room. Du Qingqing wanted to clean it by himself, but Qiao Ruida found it troublesome and called the hourly worker directly. Supervising the three cleaning ladies, after finishing the room cleaning work, it was already lunch time. The two of them were too lazy to start cooking for themselves, so they drove to the Peking University campus to eat in the cafeteria.

Today is the beginning of the new semester, and it’s time for students to clock in and check in. Walking on the Peking University campus, you can often see junior students pulling suitcases. Qiao Ruida and Du Qingqing are already in their third year of college this year. There are not many undergraduates on campus who are older and more senior than them. As for senior students, most of them will go to employers for internships in the second semester, and most of those who stay on campus are those preparing for the postgraduate entrance examination.

After lunch at Songlin Fast Food, Qiao Ruida and Du Qingqing separated and went to their respective classes to report to their counselors. In addition, there is another very important thing that needs to be completed within two days, which is to log in to the campus network and select courses. By the second semester of my junior year, there were not many basic courses left, and all the highlights were replaced by professional courses. For other students, course selection is still quite important. After all, the integrated circuit design major is a very cutting-edge subject. The content in the textbooks is generally five or six years behind the times. The basic foundation is okay, but the practicality is almost zero. If you can choose a few professors with practical experience in chip design, you can learn some truly practical things in the classroom. After graduation, when you go to a corporate research institute and enter actual projects, you won't be blind and confused. Take action.

However, this course selection is of no importance to Qiao Ruida. It doesn’t matter whoever chooses it. As a master who can independently complete the design of a mobile phone processor, his chip design ability is already better than that of more than 99% of teachers. I think It is basically impossible to learn something in the classroom.

An afternoon was spent in busyness. Returning to the courtyard in the evening, Qiao Ruida had time to continue thinking about which rocket to develop (plagiarize) for the first time after the establishment of Ruida Aerospace. First of all, if all launch vehicles that existed before 2013 are excluded, even if there are no patent restrictions, they will have a bad reputation of plagiarism and imitation, which is not worth it. Secondly, all small rockets are excluded. The carrying capacity is too poor. Slightly larger satellites cannot be launched. The launch cost is too high and the economy is not good. Thirdly, all heavy-lift rockets can also be excluded. They are too large, complex in structure, too difficult to produce, and extremely expensive to produce. To sum up, this is not what an emerging private aerospace company should play in its initial stage.

After these exclusions, there are only a dozen medium-sized launch vehicles left to choose from. Then the performance parameters, carrying capacity, launch costs and other information of these launch vehicles were listed on paper and compared. A launch vehicle named Zhuque 2 stood out and became Qiao Ruida's final choice.

The Zhuque-3.35 launch vehicle is a medium-sized liquid launch vehicle system developed by my country's Blue Arrow Aerospace Technology Co., Ltd. The Zhuque-49.5 launch vehicle is equipped with a liquid oxygen methane cryogenic engine with independent intellectual property rights. The rocket has a two-stage configuration, with a body diameter of 219 meters, a total rocket height of 268 meters, a take-off weight of 500 tons, and a take-off thrust of 4 tons. It has a transport capacity of 200 tons in a sun-synchronous orbit at an altitude of 6 kilometers and a transport capacity of tons in a low-Earth orbit of kilometers. It can send two standard SUV cars into space at the same time. The rocket has primary and secondary recovery capabilities and can launch satellites and manned spacecraft payloads. It is an extremely advanced multi-purpose launch vehicle.

It is worth emphasizing that the first and second stages of the Zhuque-2 rocket use liquid oxygen methane as engine fuel. The liquid oxygen methane engine is one of the main directions for the development of the aerospace field in various countries in the world in the future. Because it is non-toxic, environmentally friendly, highly reliable, high-performance, low-cost, easy to operate, and reusable, it is an important step in the development of aerospace main power technology. direction.

The first is that liquid oxygen methane has high propulsion efficiency. The theoretical specific impulse of the propellant is as high as 390 seconds, second only to liquid hydrogen and liquid oxygen propellant. The second main reason is that liquid oxygen methane propellant burns without carbon deposits and the ignition mechanism design is more advanced. Easy and convenient for engine recycling and reuse, it is very suitable for reusable rockets or aircraft. The third is that the boiling points of methane and liquid oxygen differ by less than 20°C, and the need for heat insulation between storage tanks is greatly reduced, making it easier to introduce The common bottom design reduces the structural weight; fourthly, methane propellant can be separated from natural gas, oil field gas, flammable ice, etc. It has a wide range of sources and is cheap, which can further reduce the cost of the rocket. (End of chapter)

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