With Huang Yuting and Xu Yun coming up with two plans.
The temporary version of the gravity gradiometer does not have any difficult problems in terms of structural principles.
However, considering that it was already approaching six o'clock in the morning, Huang Yuting and Lin Chen, who were tired from traveling and traveling, could still persevere mentally, but they were already showing signs of obvious fatigue in terms of physical strength and energy.
Therefore, at Xu Yun's insistence.
Everyone, including Ge Tongyou and Xu Yun himself, returned to the guest house to rest temporarily.
Tell the truth.
Compared to the Ritz-Carlton in Chengdu, the guest house at the Xichang Satellite Launch Base is relatively average.
After all, that's the nature of the base.
Since it is an official scientific research institution, the overall style of the guest house must not be too luxurious and flamboyant, and the crystal ceiling and gold-plated handrails are definitely not possible.
However, although the decoration of the guest house is relatively simple, the indoor facilities are still very good, and the mattresses and quilts are very clean and comfortable.
Not long after Xu Yun went to bed, he fell into a deep sleep.
Before falling into a dream.
Suddenly a thought flashed through his mind:
It seems that the two meals I owe Cockroach Lady will be postponed again...
A night of silence.
........
Over the next two days.
Xu Yun, Ge Tongyou, Huang Yuting and others have made many optimizations on the structure and several major modules.
Academician Pan accompanied Mr. Wang back to Chengdu first. Although Mr. Wang was occasionally energetic, most of the time he was still depressed and all indicators were not very healthy.
For example, Mr. Wang's blood oxygen concentration has been floating between 91 and 93. This value is really unhealthy.
Therefore, even though Xichang has good recuperation conditions, Academician Pan accompanied Mr. Wang back to Chengdu.
Two days later.
Seven o'clock in the morning.
Ge Tongyou, Li Hua, Xu Yun and others waited at the gate of the base early.
Both Xu Yun and Huang Yuting looked excited and expectant at this time.
After a while.
Lin Chen, who had been paying attention to the distance, pointed forward and said loudly:
"Sister Huang, the car is here!"
Upon hearing this, Huang Yuting suddenly raised her head and looked in the direction Lin Chen pointed.
I only see this moment.
On the avenue outside the launch base, a convoy of six trucks slowly appeared.
The exterior of each vehicle is painted with a green camouflage coating, and the cargo box is covered with a camouflage net to prevent satellite photography. It is obvious that the origin is extraordinary.
Upon seeing this, everyone stood up one after another and waited at the entrance.
A few minutes later.
The convoy stopped about five meters from the entrance.
The car door opened quickly and a man of about thirty years old jumped out.
The man was wearing casual clothes at this time, but his whole body exuded a military aura. His face was extremely resolute and steady. At first glance, he was a reliable and upright person.
After getting off the car.
The man held a very thin document, walked quickly to everyone, and asked:
"Hello everyone, who is Chief Engineer Li Hua?"
Hearing this, Li Hua took a step forward and handed over the work permit he had prepared:
"Hello, comrade, I am Li Hua."
The man took the work permit and looked at it carefully for a while, then handed it back to Li Hua:
"Hello, Chief Engineer Li, I am Cao Yi, the person in charge of the confidential transport fleet of the xx department under the 29th Institute, and I hold the title of major."
"I was ordered to come here today to hand over the relevant equipment to you. What I have in hand is the handover list."
"Mr. Li, where do you think it would be more appropriate for us to unload and hand over the goods?"
Li Hua shook hands with Cao Yi, and then pointed toward the inside of the base:
"We have prepared the location. It's right inside the base. Major Cao, let the driver drive the car in."
Cao Yi nodded when he heard this, turned around and made a gesture to the convoy driver:
"Wei Fan, drive the car in!"
After the car starts moving.
Xu Yun on the side looked at the convoy with some curiosity.
The 29 institutes Cao Yi mentioned refers to the 29th Institute of China Electronics Technology Group Corporation.
It is a very special scientific research unit like Mianyang Institute of Chinese Physics...that is, Mianyang Ninth Institute.
Although Xu Yun had worked at Chengdu Aircraft Manufacturing Co., Ltd. for many years in his previous life, his understanding of this organization was quite limited.
I only vaguely heard that there were Gundams, Star Destroyer Cannons, and Artificial Tiga in 29.
Today's meeting was Xu Yun's first formal contact with people from Institute 29 in his two lifetimes.
Then under the guidance of Li Hua.
The convoy drove into the base one after another and stopped at the entrance of a warehouse.
At this time, several forklifts and equipment to assist in unloading were on standby at the entrance of the warehouse. After the truck tailgate was lowered, the workers quickly unloaded the boxes sealed with metal or wood.
About half an hour passed.
All the unloaded boxes were placed in the warehouse, divided into two areas on the left and right according to the wood and metal shells.
Wait until the goods are unloaded.
Cao Yi first took Li Hua to the area near the wood area, pointed at this area and introduced:
"Gong Li, according to the classification in advance, the wooden boxes contain some relatively basic and solid equipment."
"For example, landing gear, gyroscopes, three-pronged slides, wind deflectors, etc."
"So I would like to make a suggestion, let's start the inventory and inspection from here, and get the simple parts done first."
Li Hua nodded:
"no problem."
There were thirteen or four wooden boxes in total, neatly stacked on the left side of the crowd.
The smaller one is about the size of an urn, the larger one is about the same size as a coffin, and the largest one is almost as tall as an incinerator.
With the assistance of Cao Yi's fellow technicians.
These wooden boxes were quickly opened intact.
Li Hua and Ge Tongyou took their assistants and divided them into two parts and inspected them one by one.
These modules loaded in the wooden boxes are very simple and belong to the basic structure that the Xichang Satellite Launch Center itself can build.
The reason why the 29th Institute was asked to assist in the forging of these modules was simply because the processing plant inside the base was in a state of combat readiness all year round, and some procedures and procedures were required to start it up.
It takes a long time to come and go, much more than asking 29 offices to help polish it.
This part is also the easiest to inventory, just check to see if there are any serious dents on the outside.
So less than ten minutes.
Li Hua and Ge Tongyou finished counting and returned to Cao Yi:
"Major Cao, there is nothing wrong with these devices."
Cao Yi's expression remained unchanged, and he turned to look at the other metal box:
"In that case...Gong Li, let's start counting the key equipment. I won't get involved in this part, Gong Li. I'll leave the details to you."
Li Hua nodded to him again and led Ge Tongyou to a metal box at the front.
Ge Tongyou first bent down, found a number on the box and reported it:
"a12."
Li Hua took out a tablet-like device from his body and fiddled with it a few times. A series of numbers quickly appeared on the screen:
"96459."
This is the electronic code sent by No. 29 in advance. After all, the gravity gradiometer is of great importance - even the beggar version is the same.
In order to avoid wrangling and avoiding suspicion, this method is necessary.
Ge Tongyou quickly entered the numbers.
After a while.
The metal box made a low clicking sound, and a small opening of about one centimeter slowly opened at the top.
Li Hua inserted his finger into his mouth and raised it forcefully.
The scene inside the metal box suddenly appeared in front of everyone's eyes.
The box numbered a12 contained a precision device similar to the head of a sewing machine. It was silver-white in color and had a digital display screen directly above it.
This is a remote sensing balance instrument, which is one of the lifeblood components of the gravity gradient instrument.
The accuracy of the remote sensing balancer will be directly related to the effect of the balance module, which is somewhat similar to the chicken head stabilizer in the photography industry.
Then Li Hua carefully took it out and placed it on a mobile pallet next to him.
There is a tool similar to a microscope installed on the moving platform, but it does not have components such as eyepieces or objective lenses, and its size is much larger than an ordinary microscope.
This thing has a name that sounds weird to non-industry people, it's called a three-dimensional coordinate measuring instrument.
This is a high-precision equipment for detecting geometric and positional tolerances of workpieces. It has high technical content and is extremely expensive to build.
For example, the three-coordinate measuring instrument next to Li Hua cost more than 1.7 million yuan.
Don’t think this price is exaggerated. Some non-military CMM brands are not much lower than this.
For example, brands such as Hexagon or Faroo, the price of a better three-dimensional coordinate measuring machine is close to one million.
In many car factories, you can often see workers with a monthly salary of less than 20,000 yuan carrying out inspections with three-dimensional coordinate measuring machines that sell for millions. This thing is ridiculously expensive for its basic price...
Two minutes later.
A three-dimensional CAD digital model and wire frame model appeared on the screen of the three-dimensional coordinate measuring instrument, as well as an iges file bar showing relevant results.
"Bearing span error 0..."
"Anti-angle swing capability 4/1000...."
"Z-axis accuracy 0, 0, 100, 0, 1, 0..."
"Small gaps 122.500, 182.550, 8.040..."
Li Hua carefully read the values line by line.
Then he raised his head and looked at Ge Tongyou. Seeing that Ge Tongyou had no objection, he said to Cao Yi:
"Major Cao, the accuracy of the A12 is intact, there is no sign of wear, and it fully meets our requirements."
Cao Yi's eyes moved slightly when he heard this, but he still didn't show too much joy, but still said calmly:
"Okay, Mr. Li, let's dock the next box."
Li Hua nodded and led Ge Tongyou to another box.
"a05."
"53522."
Click——
The box opened quickly.
The equipment loaded in the box this time is three metal robotic arms, each with two obvious connection grooves.
Each robotic arm is folded in half. The folded length is about 50 centimeters and the width is only a few centimeters.
Li Hua's assistant quickly took out the robotic arms one by one, spread them out, and also placed them on the pallet.
However, this time the person in charge of inspecting the equipment was not Li Hua, but Huang Yuting. These three arms were the measuring arms of the gravity gradiometer, and the groove was where the measurement module was placed.
"Length 95.28...."
"Width 6.666...."
"The pressure at the joint is 28.7psi..."
"The diameter of the graduation circle is 0.833..."
A few more minutes passed.
Huang Yuting looked away from the three-dimensional coordinate measuring instrument, turned to Li Hua and nodded:
"Gong Li, the parts meet the requirements."
Li Hua suddenly breathed a sigh of relief.
After the measurement module has been completed by Xu Yun...or the HKUST Listening Project Team.
There are only three most important links in the gravity gradiometer:
Remote sensing balancer, measuring manipulator and power module.
Among them, the power module is solved by the Xichang base itself. After all, as one of the domestic rocket launch hubs, the Xichang base cannot lack power equipment for anything.
Therefore, what they really need to check are naturally the two components of the remote sensing balancer and the measuring arm.
Of course.
Some students may ask after seeing this, what about the 50x50 lattice?
This involves the issue of process stability.
True.
Although the 50x50 lattice is very important in the entire gravity gradiometer, the manufacturing process is also quite complex, and it is difficult to produce it with a general mechanism.
】
But for units like 29, high-density lattice is an already mature technology.
It does not require detailed data provided by the Xichang base to go through the customization process like the remote sensing balancer and measuring manipulator. It only needs to calculate the arrangement of the crystal lattice.
That is to say, there are not many institutions that master the corresponding preparation process, but as long as you find the right institution, production is very easy.
In a way it is similar to nuclear weapons:
Not counting several nuclear-hiding countries, there are more than 200 countries in the world with five major gangsters possessing nuclear weapons. The technology is absolutely high-end.
But for the five gangsters, it is not difficult to produce nuclear weapons. They can produce a neon happy bomb with just a few clicks.
The 50x50 lattice plate is almost the same.
Li Hua then took Ge Tongyou to unpack and inspect several other boxes.
sensor.....
Falling prism.....
Ion pump......
Servo coil......
Surrounding sensitive twisting wire.....
One by one, the parts passed the verification and handover.
More than an hour later.
Li Hua wiped the sweat from his forehead and took the initiative to reach out to Cao Yi:
"Major Cao, all items have been handed over without any problems."
Hear this.
Cao Yi, who had always kept a straight face, finally breathed a sigh of relief, with a look of relief on his face, and reached out to give Li Hua a firm shake.
After letting go of your hand.
Li Hua thought for a while and asked Cao Yi:
"Major Cao, are you on a tight schedule for your escort mission today?"
Cao Yi was stunned when he heard this. Although he was confused, he still said honestly:
"It's not very urgent. Since these goods are of great importance, the time given by the superiors is sufficient."
"No matter how long we stay here at the base, we just need to report to the xx troop station on the outskirts of Xichang at six o'clock tonight."
"It's not convenient for me to disclose to you the location of the troops' station, but it's only an hour or two away from here."
Li Hua nodded slightly when he heard this, and suddenly made an invitation::
"In that case, Major Cao, are you interested in watching the assembly process of the gravity gradiometer?"
"To tell you the truth, although our structural parts are a bit simple, the accuracy is at the top level in the world."
"It is not an exaggeration to say that today is likely to be a milestone day for domestic measurement... no, it should be said that the national defense industry will be recorded."
Cao Yi was stunned again and looked around in astonishment:
"Gong Li, you mean... to assemble it here?"
Li Hua glanced at Ge Tongyou beside him, and they both nodded:
"That's right, assemble it right here."
...........
