Rebirth 2008: I Can Make Money Reading Chapter 476

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Musk's Spex space company first sent a commercial satellite into orbit in 2009, when the company had 1,100 employees.

Now in 2015, the number of employees of Spex Space Company has increased to more than 2,000, and the company's market value is about 3 billion US dollars.

If the rocket recovery technology is realized, the market value of this company will definitely double many times. The historical time of the previous life is December 2015.

In the future, his company will have a market value of more than 100 billion dollars.

Now, Mu Yang also wants to engage in rocket recovery technology and commercial rocket and satellite launches, so he is completely a troublemaker. Xinghai Group has entered the new energy vehicle industry, and Tesla's market value in this life is much lower than in previous lives.

If Musk knew that he was much better in his last life, and his development was slow after having Mu Yang in this life, I don't know what he would think.

It is estimated that Musk thinks that he is the troublemaker instead. The new energy vehicle is the first to be made by Xinghai Group, and the rocket recovery technology is not good enough.

Mu Yang's requirement for rocket recovery is to launch it into orbit and then land safely, and also require the landing speed and landing position. The landing position is the specified position, the error is not more than 3 meters, the attitude is still vertical landing, and the rocket engine will reduce the relative speed to a state close to 0 before landing.

First, he ditched the use of parachutes.

Using a parachute, the solution seems simple and reliable, but in fact there are many problems.

For example, it is very difficult to control the landing point. There will be a time delay when opening the parachute at high altitude. If the parachute is opened at 1,000 meters, if the wind speed is 0.2 m/s, the position will reach 40 meters. In fact, the high-altitude wind speed is very large. A few meters per second is normal, and an error of hundreds of meters is possible.

On the other hand, the high-altitude parachute will also be very fast. It does not mean that the speed can be lower than 5 meters per second when a parachute is used.

QU8K is a relatively well-known sounding rocket project. The rocket was successfully launched to a height of 36.9KM, and the parachute landing position moved 5.15KM. However, his final landing speed was as high as 37 seconds, and the speed exceeded 100 per hour.

At this falling speed, if the car hits the guardrail, the car will be destroyed for sure, and most of the people will die, but if the car directly hits the stone wall and the speed drops to zero in an instant, it will be more serious.

Therefore, if the landing speed reaches 100 kilometers per hour, most of the items planned to be recycled are damaged, and they must not meet the requirements.

Also, the parachute and the launching device take up space.

In general, Mu Yang directly abandoned the plan of using a parachute, even if it was used as a backup, he also gave up this plan.

In addition to the parachute solution, the second landing technique is to use the engine to slow down and control the speed. This requirement is very high.

Technical issues such as focus point, balance point, fire point, engine re-ignition, thrust control, thrust vectoring, etc.

For example, it is necessary to control the balance point so that gravity and thrust are in the opposite direction to slow down the landing speed. If it is in another direction, it is to speed up the landing speed.

This balance point is actually a matter of the center of gravity of the object and the direction of thrust.

In addition to this method, there is also gliding landing, which has lower requirements for vertical landing and reduces the impact of recovered items on the ground;

Another is to use a parachute to slow down at high altitude, then use a large helicopter to hook it, and then tow it away. Of course, there is no need to worry about whether you can tick it or not.

Being able to tick is one story, not being ticked is another story. "wrong!"

"I seem to have made a mistake!"

"Recycling rockets may not necessarily reduce costs!"

Suddenly, Mu Yang discovered an important problem, and most people entered into a misunderstanding.

First, in order to recover the rocket, additional various control and navigation spaces must be added, which greatly increases the difficulty of rocket design;

Second, in order to preserve the rocket, a lot of fuel needs to be left as a subsequent "brake" to slow down. This has extremely high requirements for the design of the entire propulsion system, especially the fuel push system, and many redundant designs need to be added, which is risky;

Third, like an aircraft engine, an important indicator for rocket launch is the thrust-to-weight ratio, but if the recovery problem is considered, it is equivalent to adding some extra fuel and system design, which will take up some payload space, resulting in a decrease in launch efficiency. Or to achieve the same launch capability, a larger rocket design would be required.

For example, it is all for launching a one-ton satellite, but in order to recover, it needs to increase fuel by 20%, and the thrust of the rocket engine needs to be greater.

The various costs increased are not small numbers.

Fourth, similar to the space shuttle, the maintenance after recovery, especially for the maintenance of the first-stage engine, may cost no less than directly replacing it with a new one.

If you know mechanics, especially those who are engaged in welding, if the defect area accounts for a large proportion, the repair time and cost may be higher than the cost of a new one.

Saving costs is essentially only meaningful when the launch frequency reaches a certain number. For example, I am afraid that a single-digit rocket will be launched in a year. Even if a recoverable rocket is used, the frequency of use is not enough, which will also increase the cost of operation and maintenance. The proportion of the total cost of rocket launch has greatly increased.

Musk has launched tens of thousands of satellites with a very high launch frequency, and the cost of the launch is evenly shared, so recycling technology is cost-effective. To sum up, it is difficult for SpeX's rocket recovery technology to save costs to a large extent, or only slightly reduce costs.

But abandoning the cost factor, its significance is far more than a technological breakthrough in the successful recovery of the rocket. For example, if humans are carried in the rocket, then the issue of cost need not be considered too much.

Mu Yang's research on rocket recovery technology involves a lot of technology for future spaceships, which can be regarded as laying the foundation for future layout. Look no further and decide to buy Rocket Recovery Technology.

Open the system store, common shelves, and search for "rocket recycling" related technologies. In an instant, more than a dozen technologies jumped out.

This system does not mean that the results can only be searched based on keywords, but based on Mu Yang's own thoughts.

An hour later, Mu Yang browsed through the introductions and technical requirements of all the technologies, learned a little bit about these technologies, and chose a technology suitable for Xinghai Group's situation.

★An aerospace rocket recovery technology★

[Technical introduction: The main body of the spacecraft manufactured by metal 3D additive equipment has multiple launch nozzles, which can achieve 360 ​​degrees, so as to realize vector adjustment without dead angle....

It has the following advantages: reusable, zero-speed-down balance, 360-degree rotation adjustment, automatic attitude adjustment, etc.]

[RR01 (RketRvery Rocket Recovery): The world's top level, about 5-10 years ahead of the most advanced technology in the current laboratory, required achievement points: 100]

Mu Yang bought this technology and absorbed it.

A few minutes later, he had a deep understanding of the RR01 technology. The main core of this balanced landing technology is the aero-engine control system, such as ignition timing and ignition delay control, which can be controlled within milliseconds, and the engine can be controlled to control the thrust. , fine-tuning can be controlled within 1N.

Of course, the larger the engine power, the larger the fine-tuning error range.

RR01 technology still relies on the hardware foundation, that is, the manufacturing technology and chip computing power of the rocket body. The main body of the rocket is not well done. No matter how powerful the RR01 is, it still cannot be used many times.

If Musk's Spex space company technology, under normal circumstances, the orbiter can be reused 100 times, the engine can be used 50 times, and the two bundled boosters can be used 20 times.

But switching to this RR01 technology, the number of reuse of these parts has not increased. How many times these parts can be used mainly has a lot to do with the quality of these parts.

For example, if the material of the rocket engine is durable and the technology is qualified, it is the same as a car engine. As long as it does not break, it is not a problem to reuse it 500 times, 10,000 times of ignition, and 10,000 hours of use.

After all, this RR01 can only guarantee that the main body of the rocket will not break when it is recycled, but it cannot guarantee the number of reuses, and it has nothing to do with the quality.

The rocket has added this RR01 technology, so it needs to add a lot of parts

Components and fuel, as well as control systems, rocket manufacturing costs at least doubled.

But the advantage is that as long as the quality of the rocket parts is qualified, the cost of launching the rocket is mainly the fuel cost, and the maintenance cost is extremely low.

As long as there are enough launches, the launch cost is very low.

Similarly, no matter how powerful the RR01 technology is, it also depends on the chip. If there is no powerful chip, it will be impossible to calculate and analyze the current state of the rocket, and then it will be impossible to automatically adjust the attitude of the rocket. Maybe it will freeze and the rocket will fail to land. .

When the rocket returns to Earth, it will pass through a black zone. In this area, the spacecraft and the earth will completely lose contact.

This black barrier area is not small. It is an area between 30,000 and 80,000 meters above sea level. Of course, in this area, the rocket's flying or landing speed is very fast. If it is flying, it can reach 7.9 kilometers per second. The high speed is only a few seconds, if it lands, the speed will be much slower.

In this area, RR01 cannot ignore the black barrier area, but it can automatically control the landing speed and attitude of the rocket body according to the established procedures, without the need for ground personnel to control.

After Mu Yang figured out the RR01 technology, he still needs to purchase rocket design and manufacturing and rocket launch technology, which is considered a complete rocket launch technology.

These three technologies are interrelated and indispensable.

However, he has to digest the RR01 technology, produce the data, and then purchase the rocket design and manufacturing and rocket launch technology.

RR01 spent one hundred achievement points, which is not a lot.

Before, Mu Yang had a total of 2000 achievement points. On June 5, 2014, the achievement points were 1614.5 points. In the past six months, it has only increased by 385.5 points, which is not much.

The main increase in achievement points is the papers and practical patents in the direction of CNC machine tools and wafer manufacturing, with a total of two to three hundred achievement points.

Another 100 achievement points were spent today, and there are currently 1900 points left.

In the next ten days, Mu Yang spent on RR01 technology and output data, and thoroughly understood RR01 technology.

After working on RR01, Mu Yang took his family on the newly purchased large yacht, set off from the wharf of the villa community, took the Qianshui Road to the sea, and sailed to the rocket base. The journey was about 400 kilometers.

This large yacht was purchased at the end of June last year. It cost 1.5 billion yuan, and then it took several months and nearly 1 billion yuan to renovate. It is more expensive than his private jet.

The main reason for the high price is the expensive decoration inside the yacht.

The mega yacht is 130 meters long and has 10 large suites with bathroom, living room and double bedroom.

There is also a cinema, indoor swimming pool, outdoor bar, jacuzzi, sunbathing area, helipad, and a wide range of water sports equipment.

After the transformation, the speed of the yacht has increased from 38 kilometers per hour to 45 kilometers per hour. Of course, the strength of the yacht has also been strengthened. It was named "Fan Xi" by Mu Yang, and it was a gift for the two children.

It is easy to use, and it is parked not far from the door of the house. It must be used more frequently than private jets.

The family and the bodyguard team set off in the morning. The yacht sailed slowly on the Qianjiang River, and two bodyguard speedboats drove on both sides to maintain safety.

Mu Yang and his family sat on the second top floor to enjoy the city scenery on both sides of the Qianjiang River. The two children were babbling and screaming excitedly. The weather was a bit cold, close to zero degrees Celsius. Mu Yang went to the top floor to blow some wind, and then had to go back to the closed cabin.

What they probably don't know is that there are countless people on both sides watching his luxury yacht.

There are still many yachts sailing on the Qianjiang River, but none of them are as big as the Fanxi and look very luxurious on the surface.

The Fanxi stopped and went, Mu Yang and his family slept on the boat, and arrived at the rocket launch base the next morning. Half a year ago, Mu Yang visited the rocket launch base. At that time, the dock had just been developed.

In the past six months, the pier has been built, the road leading to the rocket launch base has been built, and some buildings at the base have begun to lay foundations

, the overall construction progress is very fast.

Mu Yang accompanied his family, and it was not convenient to go ashore, so he just asked the captain to walk around the island, and he used a telescope to observe. "Son, after the rocket is launched normally, will the wreckage fall into the sea?" Father doesn't know much about aerospace, and he rarely asks about this aspect of knowledge.

"Didn't you say that if you go directly into space, you won't fall to the earth? There is no gravity in space, right?" Mu Yang's mother also asked curiously.

Mu Yang replied: "The rocket wreckage after launch will fall, and most of it will fall into the fall zone after passing through the atmosphere. If it is the last stage of the rocket, it will indeed float in space. It depends on how high the rocket is from the ground. If it enters the atmosphere and burns by friction with the atmosphere, most of it will be burned, and very few can fall to the ground.

We will calculate the fall area and the fall event in advance, and will notify the personnel to leave in advance to ensure the safety of the personnel.

In the future, the frequency of our rocket launches will be very high, so there are no residential houses within ten kilometers nearby, and they have already moved away. "

He just explained roughly, and my mother might not be able to understand it, but from their eyes, they saw that their company was researching rocket satellites, and they were eager to go to the on-site observation site to see the rocket launch into space with their own eyes.

If it is a country launching a rocket, where is the qualification to watch it on the spot?

In the past one or two months, his parents have been discussing rocket launches and satellites from time to time. Otherwise, his mother would not have asked such questions just now. The observation of the rocket launch base~www.mtlnovel.com~ also has their "inciting" credit.

Mother praised: "It's good to move them all away. I'm most afraid of falling from the sky and hitting someone. It will kill people. What kind of disaster is it called?" "No disaster." Song Xuelu reminded.

"Well, it's a shame to die."

"Even if it falls, the chance of hitting someone is very small. If it really hits, it will be bad luck, and your life will not be good."

The family happily played for a day, and at noon, Mu Yang ordered the captain to drive the yacht towards home, and did not arrive home until the third morning.

After two days of idleness, Mu Yang began to transfer to a new scientific research project.

He spent 300 achievement points to purchase rocket design and manufacturing and rocket launch technology. Before the Spring Festival, he put all his energy on these two technologies.

Chapter end