Genius is just the threshold for me!

"Spanning so many years, it seems that the 11th Academy of China Aerospace Science and Technology Corporation is not very good at seizing aviation business."

Lin Dong muttered to himself, thought for two seconds, and quickly replied: "Hello, South China University of Technology, the flying wing layout of aircraft does not have conventional elevators, vertical tail rudders, or ailerons. Flight control is mainly accomplished by split or embedded drag rudders and all-moving wingtips..."

Relying on highly accurate flight algorithms and fly-by-wire flight control systems, specific demonstrations and framework design ideas can be found in papers FY201509B, F2016016, FY201603B6Y, etc., which should be understood in order…”

Since it was still in the design and demonstration stage, Lin Dong did not provide specific technical details, but instead gave a general idea and direction, followed by a series of papers.

Ding--

Press the send shortcut key with your finger, and the email will be sent with a ding.

"Done!"

Lin Dong stretched, glanced through his email to make sure there was nothing else, opened nuclear physics-related materials and papers, set it to 5x autoplay, picked up some sunflower seeds, and leisurely started browsing.

"..."

Wang Xingguo saw the rapidly refreshing display on the screen, a paper he barely had time to read, and then looked at Lin Dong's leisurely demeanor.

Even after all these years, knowing just how monstrous Lin Dong was, I still couldn't help but curse him as a pervert.

This is nuclear physics.

Is this how you can collect and edit academic papers in this field?

"Take your time reading, I'll handle that old guy Yuan Li's emails..." Wang Xingguo shook his head, deciding not to compete with such a prodigy.

"Alright."

Lin Dong waved his hand and calmly said, "It's fine as long as you guys don't engage in offline PvP."

Sigrún has taught at the Iceland University of the Arts as a part-time lecturer since and was Dean of the Department of Fine Art from -. In – she held a research position at Reykjavík Art Museum focusing on the role of women in Icelandic art. She studied fine art at the Icelandic College of Arts and Crafts and at Pratt Institute, New York, and holds BA and MA degrees in art history and philosophy from the University of Iceland. Sigrún lives and works in Iceland.

Time flew by amidst a fulfilling academic life and simple work, and soon it was late September. Lin Dong and his classmates had been in their second year of high school for almost a month.

After the Mid-Autumn Festival, the summer heat gradually dissipates. Although there is still a hint of the lingering heat during the day, the mornings and evenings are already cooler than usual.

Clang! Clang—

On a weekend afternoon, at Lin Dong's house, Xu Qingling took nail clippers and trimmed all ten of Lin Dong's fingernails clean, then carefully filed them down to make them sharp, before handing them over with a smile.

"It's your turn to cut my hair!"

Lin Dong looked at Xu Qingling's happy smile, smiled, grabbed her fair and slender hand, and took the nail clippers to trim her long nails that hadn't been trimmed in a while.

After Lin Dong finished cutting her nails, he opened his small nail file and carefully smoothed the sharp edges of her nails. He then gently pinched Xu Qingling's delicate and soft fingertips and chuckled, "Want to come to the lab with me later?"

"Is there something you need?"

:

Xu Qingling glanced at the time and asked Lin Dong.

"The first prototype of a small electric rocket has been developed at the space base," Lin Dong said with a smile. "I'll go over there to assess and confirm it."

The first small rocket project at the aerospace base was mainly about team building and developing the first feasible commercial aerospace rocket. It was also the first business to launch the supporting industries for the Liangshan Commercial Aerospace Port.

Lin Dong didn't participate in this project at all, except for keeping an eye on the progress. He left everything to Chief Engineer Su Ruohua. Now that the plan is finalized and even the testing machine is ready, it's a good time to go and check it out.

"Then go ahead."

Xu Qingling smiled and said, "Aunt Xia will be back later, I'll help her prepare the vegetables and cook..."

"it is good."

Lin Dong smiled, filed down Xu Qingling's last nail, put away the nail clippers, gave Xu Qingling a quick poke on the face, and then left the residential area to head to Laboratory No. 78.

Twenty minutes later.

Lin Dong arrived at the laboratory.

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Wang Xingguo, Su Ruohua, and Xu Ziming had already come from the adjacent final assembly workshop to wait.

"Godmother, it's a completely new team, and they managed to finish the plan in two and a half months. That's impressive progress," Lin Dong said to Su Ruohua as soon as he entered the lab.

"We've researched countless small rockets."

Su Ruohua didn't take too much credit, shaking her head and saying, "In addition, as Xiao Dong said, replacing the turbo pump with an electric pump solution improves the simplicity of the entire system by more than 70%, and reduces the amount of R&D work by a lot."

I provided a rocket engine design, a propellant design, and a pump design.

The remaining motors, batteries, and electronic controls were all supplied with technology from Xingdong Company and Dizi Company. The core cooling and heat dissipation solution was determined by Engineer Huang and Engineer Xu together, and the integration solution was completed by Engineer Xia's team...

"What about the propellant flow control and ignition injection model?" Lin Dong asked.

Just as the power of a car engine is controlled by the throttle, the thrust of a rocket engine depends entirely on the flow rate of the propellant. A higher flow rate results in greater thrust, while a lower flow rate results in less thrust.

This flow control, along with the injection mixing and ignition model, is one of the core factors determining rocket thrust and stability.

"I've got this sorted out. It's the same as before, but the electric pump solution is more precise and works even better..."

As Su Ruohua spoke, she took out a tray and handed it to Lin Dong: "These are the experimental data for some of the current solutions. Although the solutions have been finalized, there are still some problems with the three-electric system of the electric pump."

One issue is that the high-energy-density lithium-sulfur battery is still a laboratory product, and mass production is still some way off. The second issue is that the motor design is not stable enough. Finally, the current control algorithm is not perfect...

"Let me see." Lin Dong connected the disk to the lab server, entered the password Su Ruohua had given him, and an interface popped up.

After taking a look, Lin Dong was the first to open the first experimental video.

:

This is an open-air test site. A rocket engine test machine with a nozzle diameter of 40 centimeters is fixed on the test frame. Two propellant storage tanks are connected to the engine, one of which is emitting a faint mist of condensation.

Between the storage tank and the engine, you can see an electric motor and pump body through which a propellant conduit passes, with several thick wires extending from above to the battery on the other side...

"Much simpler."

Lin Dong looked at the engine, which had few pipes and only contained a turbo pump, and a hint of amazement appeared in his eyes.

Di-

After playing the video for about ten seconds, the motor started, and a faint yellow flame shot out.

The next moment, the motor started running at high speed, unleashing hundreds of kilowatts of power, driving the two pumps to spray the liquid oxygen and kerosene from the storage tank at a crazy pressure.

In an instant, the pale yellow flames transformed into a thick pillar of fire, and a massive amount of water vapor rose from the conduit on the ground.

Rumble!

The deafening roar continued, and the entire rocket engine trembled incessantly, as if trying to rip the high-strength concrete test stand that bound it from the ground...

"It's fluctuating, not very stable..."

Noticing the fluctuations in the central column of steam, Lin Dong's brow twitched slightly. After watching for a little over a minute, the engine stopped.

Lin Dong opened the other test data on the disk, quickly scanned it with the mouse, and soon confirmed his guess.

That is, the engine runs very stably, and the thrust fluctuates between 8 and 12 tons, and the fluctuation data does not have a clear pattern.

"This is due to unstable battery power supply and a faulty electronic control algorithm, causing fluctuations in the operation of the electric pump..."

Su Ruohua said seriously, "We tried to add capacitors to stabilize it, but because the power is too high, no matter how we design it, it won't work."

Adding capacitors for stabilization further complicates the system, making it more difficult for the electronic control algorithm to control effectively.

The laboratories of Xingdong Company and Dizi Company are working on solving this problem, but they say the performance requirements are too stringent and it will probably take one to two years.

The electric pump determines the injection of rocket fuel. If the pump is unstable, the rocket will naturally be unstable, and the thrust will fluctuate continuously.

This problem is obviously a core and fatal issue for space rockets. After all, unstable thrust means unstable rocket control, and when the rocket is launched into the sky, it will most likely become a hundred-ton firework.

However, this problem falls under the category of electrical, electronic, and battery technology. Each profession has its own expertise, and Su Ruohua has absolutely no expertise in this area. She can only wait for the teams from Xingdong Company and Dizi Company to come up with a solution.

"One to two years is too long."

Lin Dong thought for a moment: "Godmother, please contact Academician Ma Weiming's team, who is researching electromagnetic catapults for the Type 003 aircraft carrier project, and see if they have time to provide a stable power supply solution. If not, I will handle it..."

As for this electronic control algorithm, I'll give you some information later, and you can learn it when you have time, Godmother.

Electric rockets offer a level of precision control that turbopump rockets can never match, making them the mainstream for future space rockets.

:

Although rocket pumps have enormous power, a small rocket's electric pump can only reach a maximum of 500 kilowatts.

It is far less than the 2000 to 1 kilowatts of power of medium-sized rockets, and even less than the tens of thousands to hundreds of thousands of kilowatts of power of large rockets.

The Type 003 aircraft carrier, formerly known as the Fujian, has an electromagnetic catapult with a peak power of 4 kilowatts and requires ultra-precise and ultra-stable control.

If Academician Ma Weiming, who studies electromagnetic catapult power supply schemes, is willing to solve the problem, the power supply scheme for this small electric rocket could be a mini-Karami.

"...Should we ask Ma Weiming's team, who specializes in aircraft carrier catapults, for help?"

Su Ruohua's eyes lit up when she heard Lin Dong's suggestion, but her expression fell silent again when she heard Lin Dong say he would give her some information. However, she still did not refuse.

"Xiao Dong, send it over, I want to learn..."

talking.

Su Ruohua looked at Lin Dong seriously and asked, "Xiao Dong, the rocket uses an electric pump system. Your next step is to prepare the spike engine and the detonation rocket?"

Spiral engine, also known as plug nozzle engine, is an engine with adaptive capabilities.

Whether at sea level or in space, the engine can operate adaptively, which can significantly improve the engine's thrust efficiency.

As for detonation rockets, Su Ruohua knew that Lin Dong had already developed detonation aero engines, so theoretically rockets could also use detonation to directly change the combustion mode of the underlying components...

However, both of these technologies require precise control and high-temperature resistant materials as prerequisites.

"Godmother, I have this idea."

Lin Dong nodded without hiding anything, pulled out the disc and handed it back to Su Ruohua: "But the team still needs to work together and improve; it's too early now."

"If we crack this rocket by the end of the year, I can take over the next medium-lift rocket, and then train the current team a bit more. Once the medium-lift rocket is completed, the next step will be to work on the spike engine. Oh, right..."

As Lin Dong thought of something, he looked at Wang Xingguo and said, "Godfather, the research on this small rocket is almost complete. Xingdong Company's constellation project is about to start. I will talk to my dad about it later."

The Chengdu Aircraft Industry Group's design and development department will be involved in the design of this constellation of satellites. Satellite design and aircraft design are from the same discipline...

"Are we developing satellites?"

Wang Xingguo's eyes widened: "Isn't there a constellation project already? Xingdong is going to launch another constellation project?"

"Resources in low Earth orbit are limited, first come, first served..."

Lin Dong laughed and said, "The Americans are also planning to build Starlink, so we'll build a lot more..."

Xingdong Company's drones, robotic dogs, new energy vehicles, and related industries such as low-altitude economy, caregiver economy, and autonomous driving.

For these businesses and industries to truly develop, they all rely on the precise positioning and communication support provided by constellations, making this a suitable strategic investment.

Without sufficient business, the Western Commercial Spaceport in Xichang, Liangshan, cannot develop.

:

"By then, in addition to Xingdong Company's constellation project, we can undertake satellite projects from other companies in the market. This is a space market worth trillions of yuan."

Due to latitude and cost considerations, in the future, Chengdu Aircraft Industry Group's (CAC) space rockets, in addition to the current small and medium-sized rockets launched from Xichang, will be launched from Wenchang, Hainan.

Compared to Xichang, Wenchang in Hainan is closer to the equator, which allows for better utilization of the Earth's rotation to "throw" the rocket out.

With the support of Mother Earth, the rocket's carrying capacity can be increased by an additional 10%-15%.

At the same time, the smaller angle at which the satellite enters orbit allows for less fuel consumption to correct its trajectory, extending its on-orbit time by 2 to 3 years.

However, there is still a huge logistics cost from Chengdu to Hainan. These advantages are not very cost-effective when applied to small and medium-sized rockets.

Developing in Chengdu and launching from Xichang in Liangshan, leveraging the efficiency and supply chain collaboration brought about by launching from our doorstep, will result in a higher cost-effectiveness ratio.

However, for heavy-lift rockets with a payload starting at over 20 tons, the Wenchang launch directly increases the payload by 2 to 4 tons and saves a significant amount of satellite fuel, which is an irresistible advantage.

Therefore, in addition to Chengdu Aircraft Industry Group's own space laboratory program, it will definitely take on commercial launch missions for small and medium-sized rockets whenever possible, so as to support the operation of Xichang, Liangshan, a western spaceport.

"..."

When Wang Xingguo heard about the industrial chain of the Western Aerospace Port, he knew he couldn't refuse: "I knew you'd cause trouble."

While the field of aircraft research and design does include satellites, they've been working with aerospace vehicles for decades, so getting involved in spacecraft is still a bit of a challenge.

"Godfather, if you don't even design space satellites, how are you going to design space fighters in the future?"

Lin Dong shook his head and said seriously, "Space and aerospace are the future. Once the J-20 is developed, we can at most develop a sixth-generation fighter jet. After that, there won't be much fun left in aviation. But Chengdu Aircraft Industry Group has so many R&D personnel. We can't just lay them off, can we?"

Done.

Lin Dong seemed to have thought of something and looked at Xu Ziming, asking, "Uncle Xu, how is Qiang Xiagong doing at the aerospace base this summer? Is he adapting well to the work there?"

"He has a PhD in aerospace manufacturing engineering, which is exactly what he does... He's quite suited to it, he never complains, he's dedicated and full of fighting spirit, and he's more hardworking than me."

Xu Ziming thought for a moment and gave an objective evaluation, neither belittling nor overly praising.

"..."

When Lin Dong heard Xu Ziming say that he was more diligent than him, the corner of his mouth twitched involuntarily. After thinking for a moment, he quickly made a decision and handed a document to Su Ruohua.

"Godmother, Xia's team will no longer need to participate in the detailed design and refinement of the No. 1 rocket."

"Let him take charge of this project, do the preliminary feasibility studies, and then launch it together with the medium-sized rocket project..."

"What project?"

Su Ruohua took the document, glanced at it, and immediately exclaimed in surprise, "A space cargo ship?"

"Yes, the space laboratory pre-technology project."

:

Lin Dong nodded: "Then we'll have the Fifth Academy open up Tiangong-2 so we can conduct a docking test..."

Although the Fifth Academy also has a Tianzhou cargo spacecraft project, cargo spacecraft are crucial for the normal operation of space laboratories.

Previously, when developing machinery, Lin Dong was constantly held back by China Electronics Technology Group Corporation (CETC). Now that he's in the aerospace industry, Lin Dong is determined not to let CETC hold him back again.

In addition, this cargo spacecraft project can serve as a preliminary training project for the Chengdu Aircraft Industry Group's space laboratory...

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