Chapter 734 3D Printing

"Boom...rumble, rumble..."

As the biggest obstacle that once stood in the way of supersonic passenger aircraft, the shock wave has a strong disturbing effect on people. The huge sound caused by the aircraft breaking the speed of sound can be heard from more than ten kilometers away.

However, it is somewhat common for the citizens of Chengdu. Not to mention the presence of Chengfei will cause loud noises to be heard in the sky from time to time. After Xinyuan moved in, the noise frequency has almost doubled.

Jets from flight schools, aerospace planes returning to base for parts replacement and maintenance, and Xinyuan's own C810 passenger aircraft are all sources of continuous shock waves. Citizens who are quickly accustomed to the sound are too lazy to look up when they hear the sound.

This has even become a major basis for identifying whether you are a local. Anyone who raises his head and looks hard at the sky has definitely not been in Chengdu for a long time.

At an intersection in Nancheng District, a driver waiting for a traffic light suddenly rolled down his window with a strange scream and stretched his head to look at the sky.

Others waiting behind also looked up in confusion, and then saw an incredible scene:

In the rare clear sky, a black object with an indistinguishable shape is moving at high speed, drawing an irregular arc. What is different is that the bottom of it sprays a visible light blue tail flame, which is deeper than the aircraft engine. Some, but nowhere near as good as a rocket engine.

But the most special thing about it is the position of the tail flame. It is very rare to put it at the bottom. The citizens of Chengdu have never seen such an aircraft before, and they immediately realized that it was something new.

The height of the UFO gradually decreased, and it was now about 1,800 meters. It was now performing its last large-angle maneuver, frantically reducing its horizontal speed.

The Enterprise didn't stay in the city for too long. It completely disappeared over the city in about ten seconds, but it could already be taken with photos showing its obvious shape.

…

"500 meters!"

"300 meters!"

"150 meters!"

Meng Senlin's deputy Fang Haijun reported the altitude number with a serious face. At this time, the overload he suffered was already coming from the right side.

The Enterprise has clearly appeared in the sight of everyone on the base runway. In their view, the Enterprise is "drifting" sideways and approaching.

The entire landing process of the Enterprise was one big circle after another, using the larger bottom area to rub and slow down. The surface of the reinforced protective plate on the abdomen was already covered with traces of oxidation, all the result of the burning of the tail flame.

But from the perspective of people on the ground, it's a completely different scene.

He Ruang instantly recalled the ancient Star Wars series of science fiction movies. As a scientific researcher, it was natural for him to analyze spacecraft such as the "Millennium Falcon". Let's not mention the technical route for the moment, but the landing method of the spacecraft definitely gave him a Extremely shocking power——

——What he sees now is like a science fiction movie that has come into reality. The size of the Enterprise changes from small to large, tilts and translates to fly into the airport in a rather counter-intuitive way, and then slowly rotates to offset the previous inertia. The belly The orientation of the four nozzles gradually became vertical, gradually approaching the runway.

Even though the landing point was two hundred meters away from the crowd, the air flow turned into a strong wind and blew on everyone's face, making it almost difficult to open their eyes.

A small piece stretched out from each side of the last four propulsion nozzles, lightly touching the hardened ground. This huge black creation went through the atmospheric journey for more than 100 minutes and returned to the place where it was created.

The sprinkler truck rushed forward and sprayed water mist to start cooling the surface of the shuttle. Almost 10 minutes later, when people gathered around it, the Enterprise's side hatches unfolded.

…

[Your base used the NPAE (improved version) engine to build a multi-purpose space shuttle and successfully completed a shuttle take-off and landing test. It is under evaluation...

NPAE (improved version): The pinnacle jet engine in the world, which combines the most cutting-edge technologies of fission reactor and variable combustion chamber, is a classic that can be used for half a century and still remains out of date.

Enterprise: The design of the aircraft is unremarkable. Most of the innovations come from advances in materials science. There are not many advantages and disadvantages in the appearance and internal structure, but it is still qualified.

It is detected that there is a large deviation in the current world line, and the rewards will be partially adjusted...]

In the base, Lin Ju, who had been prepared for a long time, couldn't help but feel a little nervous. Since the system mentioned "deviation", it meant that the future was definitely uncontrollable.

Not only aliens, the situation on the earth may also undergo unexpected changes, which is worthy of vigilance.

[During the settlement, it was judged that the development of the base was in good condition, and the technology was awarded:

FTZ 0140 3D additive printer: In the 4705th year of the Yellow Emperor's Era, in order to solve the overall keel manufacturing problem of the first spaceship "Hongxian", Fuzhou Shipping Bureau developed an FTZ (Webster Pinyin) that can process a single section of up to 140 meters. 0140 laser additive printer.

FTZ0140 printing materials wrap most steel, titanium alloys, Hastelloys, nickel-cobalt alloys and precious metals, etc., and are equipped with ultra-large laser welding equipment, which can be used to process ultra-high-strength metal materials, while assisting in forming strength similar to one-piece molding.

Provide all technical information required for the production of the FTZ0140 3D printer and its supporting welding equipment, and provide reference for some unknown 3D printing materials and technical requirements.

Note: 3D printing additive manufacturing is not efficient and is not suitable for mass production. 】

…

"Space printer? This is not a printer, this is a small spacecraft!"

In the evening, a group of senior scientists gathered together to study the technical information obtained by Lin Ju, and then they were amazed.

Shelev, who was still not used to gravity, sat in a wheelchair. After reading the illustrations of the technical introduction, he couldn't help himself.

When Lin Ju verbally told them that the printer could process 140 meters in length in a single section, Shelev's first reaction was how big the volume of this 3D printer must be.

140 meters, even if it is semi-open processing, one device can occupy the entire factory, and then manufacture dozens of tons of things? How complicated must such a large device be?

However, the facts are beyond imagination, because FTZ 0140 cannot be installed on the ground at all!

FTZ 0140 itself is more like a spaceship, about 60 meters long, about 15 meters wide and high, like a huge building block. When printing and processing, it is necessary to unfold the robotic arm and print super-large parts from the side to complete the processing in space!

The so-called welding equipment is a slightly smaller spaceship with a length of only more than 10 meters. There are several claws at the front end to fix the welded parts, and then the spaceship is attached to the welding point for operation.

Two spacecraft, one large and one small, require 10 and 3 operators respectively to work together to complete space operations!

In zero-gravity space, the printed parts will not be affected by gravity, and there is no need to release stress. They are solid and reliable, and the processing error is beyond imagination. The error can be 0.2mm at the minimum scale of 140 meters.

This precision requirement can definitely be said to be the best in the world. For the keel of a large spacecraft, it is too fine. It has reached the requirements of experimental equipment and the accuracy is quite abnormal.

"20 threads, almost all of them can be regarded as the offset caused by stress release. It only needs to be fine-grinded again later, which is simply perfect."

Ye Changsi imagined this almost imperceptible error range in his mind, and suddenly thought of something and said:

"What does the information say? Hongxian? In the 4705th year of the Yellow Emperor's era, this is when Yuan Datou successfully proclaimed himself emperor and remained stable for more than 90 years?"

Lin Ju: "Not only Lao Yuan, the business of Fuzhou Shipyard has gone to space. The processing error is limited so low. How high will the requirements for the spacecraft to be built be, and how big will the size be?"

Cheng Nankai: "At least 70,000 to 80,000 tons! Let me think about it... It's really possible. If its design speed is above 1% or 1/1000 of the speed of light, the spacecraft will have to bear the huge stress from the thruster.

The modern overall shipbuilding method is not strong enough. The skeleton must be built with particularly strong materials, returning to the traditional route, and the rest are hung on the skeleton.

If this is the case, FTZ The material used in 0140 is very interesting. It is so strong that traditional casting and forging cannot produce such a large section. It can only be 3D printed. "

The world where the technology comes from is just a small episode for scientists. They soon immersed themselves in the technical parameters of the printer. Lin Ju thought deeply about it.

It seems that this world line is the empire line. Beiyang has not been overthrown but seems to have developed well. The old enterprises of the Qing Dynasty not only retain their heritage but also grow and develop. It can be seen how outrageous the world line is.

Then... I am in such a world line. Maybe there are no alien civilization relics in the original world. It is precisely because of this variable that the huge deviation has occurred?

Or, other world lines also have such "variables" that change history at different nodes?

Why can the system extract technology and even physical objects from other world lines at will? Will Xinyuan's technology be provided to other world lines one day?

What is the purpose of doing this? Do parallel universes really exist? Is it possible for them to intersect?

Lin Ju fell into deep thought, and his thoughts gradually became deeper.

…

The Times: "The Chinese have completely changed the impression of spaceflight composed of rockets."

AFP: "Experts: The Enterprise is suspected to have used advanced anti-gravity propulsion technology."

BBC: "The nuclear reactor is only 1,000 meters away from civilians! Allowing nuclear-powered aircraft is a contempt for human rights."

Edo Shimbun: "Oppose Chinese spacecraft emitting nuclear pollution into the atmosphere."

TASS: "Congratulations to China on its great achievements in the new generation of space shuttles."

"…"

In the outside world, the landing of the Enterprise has caused a widespread sensation. Many fields such as science and technology, environmental protection, aerospace, and humanities have successively expressed their shock at the Enterprise.

Although no one took the last picture of the Enterprise landing at the Xinyuan base, there were many images of it approaching Xinyuan at low altitude, especially there are hills near Xinyuan. When it is only a few hundred meters away, passers-by can look up and see the huge body of the Enterprise roaring by.

At first, netizens outside Chengdu thought it was a video special effect after seeing the video. The flying posture of the Enterprise is no different from the spacecraft in science fiction movies.

In particular, some netizens who know a little bit more directly pointed out that the space shuttle that takes off and lands in this way is not as good as the space shuttle. In addition to looking more powerful, the space shuttle on Earth is the most efficient.

However, when a large number of foreign media began to report positively, the authenticity of the news was confirmed.

Musk, who had just returned to Aramco a few days ago, was struck by lightning. He opened his mobile phone and swiped the pictures of the Enterprise flying back and forth several times, and then went to Tom's house to find him.

It was 8 o'clock in the morning in Aramco. Tom Mueller was brushing his teeth. When he opened the door and saw Musk, he was stunned, and then immediately realized what happened.

"Look at this!"

He took the phone and looked at it for a while, then threw away his toothbrush and rinsed his mouth, put on his glasses in front of the computer, and quickly searched for all the relevant information. The expression on his face became more and more strange, and finally he took off his glasses and threw them on the table.

"This is impossible!"

Tom pointed angrily at the blurry video on the screen and said:

"Even the engine of their space shuttle does not have this ability. A100 cannot be used in the atmosphere at all. In such a limited volume, there is no technology that can do it, no!

If this is true, it is denying everything I have learned. This should not exist on Earth!"

Musk rarely saw Tom lose his temper, but he could understand it. Musk, who also came from science and engineering, certainly understood the technical value of the Enterprise, but he was not so touched.

"Sorry Mueller, but this is the truth. I even sent a WeChat message to Lin, and he told me that this is the latest achievement of XAP."

Tom: "What does XAP need this thing for? Apart from showing off, I can't think of how it can compare to the space shuttle."

"Lin said that this is a lander developed for landing on other celestial bodies, and it's just convenient to use it on Earth."

"Convenient?"

Tom suddenly stretched out his hands and grabbed his hair into a mess. He looked like he was crazy, spreading his hands and gritting his teeth:

"Such a difficult thing is convenient? I can't even imagine its power! Elon, we lost, and there is no hope of catching up. I feel like I am competing with an inhuman force. Starship is like a pile of scrap steel in front of it!

Maybe I am dreaming now. Only in dreams can companies make such a thing!"

Seeing that Tom's mental state began to become unstable, Musk hurriedly stopped him from continuing.

"Hey, maybe we have a chance to get in touch with it. We do have a chance. This is not a ghost thing. This is also a shuttle made by the Chinese using machine tools!"

"Opportunity, what opportunity?"

"Uh... I'm not sure, but Lin said there is hope."

Musk remembered a few words that Lin Ju mentioned casually before he left the base, but he didn't have time to ask at that time. He has been thinking about it these days after returning to China.

"Remember what Scott said about the open market between the two countries? Lin told me that if the timing is right, it may lead to large-scale space cooperation between the two countries, and contractors like us may enter each other's space projects.

XAP is about to announce an extremely large plan. He said that if the open policy allows, he would like my StarShip to be used as a vehicle for the plan."

"What plan?"

"Space port, or space city, it is a super giant weighing tens of thousands of tons, so complicated that even XAP believes that China cannot complete it alone."