Looking at the F-500 central axis drone hovering overhead, Xu Yun's expression couldn't help but be a little subtle.
Although this mountain peak is only over 300 meters high, it is not easy to cover its appearance with a layer of ice slag.
To know.
Under normal circumstances.
Except for the multi-peaked mountains like Yuelu Mountain that cover a relatively large area, a 300-meter peak covers an area of about 2 to 3 square kilometers, and the body surface area is even larger.
At present, the bucket load of a firefighting helicopter is generally about 3-5 tons, and the maximum load is only eight tons. It can't be done in just a few hours.
Of course.
The Xichang launch base is different from ordinary institutions. The helicopters used must be like the F-500 central axis UAV, which has been modified in terms of load capacity.
But no matter how you modify it, it will still take at least an hour or two to cover the surface of the mountain with ice debris.
With the characters and status of Li Hua and Ge Tongyou, it is obviously impossible for them to engage in such boring things when they are full. They must have their own goals.
And when it comes to the word ice.
What comes to most people's minds must be JackeyLove...that's right, it's water sources such as rivers and seas.
After all, only when there is water can there be ice.
At the same time, the thickness of the ice slag on the mountain is a little thinner than the standard ice surface.
However, after the accumulation of soil layers inside the mountain, it is barely comparable to the ice layer with a thickness of about one to three meters.
in this case.
Li Hua asked the gravity gradiometer to detect things inside the mountain...
Almost in a short moment.
A word popped into Xu Yun's mind:
Nuclear submarine.
That's right.
Nuclear submarine.
Probably around March 21, many people must have seen a piece of news:
Mao Xiong's three strategic missile nuclear submarines completed a military exercise in the Arctic that broke through ice and surfaced at the same time, breaking through the ice to a thickness of 1.5 meters.
This exercise can be described as a magnitude 10 earthquake among military fans. Even people across the sea were so frightened that they almost peed. This is not an exaggeration, but they really almost peed.
But many passers-by still can’t figure out the reason:
Isn't it just a nuclear submarine floating on the North Pole and breaking a layer of ice? How could it scare the West?
What's so great about this?
This involves the concept of secondary nuclear strike capability.
The so-called second nuclear strike capability means that the enemy preemptively launches a wave of nuclear bombs to clear the ground. Almost all nuclear bomb launching facilities have been destroyed, and everyone thinks you are finished.
But at this time, you still have a hidden trump card that you can use.
For example, nuclear submarines hidden in the deep sea, strategic bombers cruising in the sky, etc.
None of these things have been destroyed in the first nuclear strike, and they can still launch nuclear strikes against the enemy in retaliation.
So strategically speaking.
As long as you have a secondary nuclear strike capability, the enemy will not dare to launch a nuclear strike at you at will, because if you kill the snake, you will suffer the consequences.
If you are not dealt with in the first wave, you will face ruthless revenge from you.
Among the secondary nuclear strike forces, the most important one is undoubtedly the nuclear submarine - because strategic bombers can actually be targeted.
In big countries like Rabbit and Bear, across the sea, nuclear submarines remain on combat readiness all year round, and there are several nuclear submarines lurking in the depths of the ocean at any time.
They communicate through long-wave radio, and the submarine receives radio signals from the command headquarters at regular intervals.
If there is no news coming from this band one day...
That means a nuclear war broke out and the headquarters was blown up.
At that time, the submarine will destroy all the nuclear missiles in one go, and then the whole world will be nuclear neutralized. Of course, in reality, it will not be such an exaggeration. Usually, a second confirmation will be carried out before the nuclear missiles are destroyed.
The radio waves used to contact nuclear submarines all use public frequency bands. For example, many netizens have used radios to receive the radio waves sent by Mao Xiong to nuclear submarines.
Sometimes it's a short piece of Russian, sometimes it's a short piece of electronic music rhythm, sometimes it's a short piece of electric noise.
In short, they are radio waves with no rules and meaning, and only people on nuclear submarines can distinguish them.
But on the other hand.
Nuclear submarines also have weaknesses - in modern warfare, discovery means destruction.
Nuclear submarines hiding in the deep sea are certainly powerful, but the anti-submarine technology of various countries today is also very strong.
As of now, the five major rogues can basically scan 99% of the nuclear submarines in the sea area.
Apart from.....
Arctic.
That's right.
Arctic.
The Arctic is a natural hiding place for nuclear submarines, and its thick ice cap can block detection by all modern technologies.
The large-scale ice layer makes up for almost all the shortcomings of nuclear submarines, making nuclear submarines a perfect god of war.
At the same time, the density of water is much greater than that of air, and seawater has a strong absorption effect on electromagnetic wave energy.
Therefore, conventional electromagnetic waves are almost impossible to pass through in sea water.
If you want to detect nuclear submarines, you can only use sonar detection.
But whether it is anti-submarine aircraft dropping a large number of sonar beacons for detection, or surface warships using ship-based sonar systems for detection, their methods are completely useless in the face of the Arctic ice cap:
The sonar beacons dropped by anti-submarine aircraft cannot even enter the water, and warships simply cannot enter.
Only the submarine itself can enter the Arctic.
Ordinary diesel submarines need to consume a lot of oxygen for diesel combustion when moving forward, but the entire Arctic is covered by ice.
in other words.
If an ordinary diesel submarine dares to enter under the Arctic ice cap, it will be suffocated to death under the ice, and the engine will stall directly.
Only nuclear submarines that do not need oxygen to drive their engines only need to provide the crew with oxygen, so they can operate under the Arctic ice for a long time.
In the huge Arctic range, if a nuclear submarine does not actively turn on its sonar system on a large scale, it will be difficult to detect enemy submarines.
But which nuclear submarine dares to take the initiative to activate large-scale sonar detection?
If you turn on sonar in a wide range, it will not be easy to detect silent enemy submarines.
This chapter is not over yet, please click on the next page to continue reading! However, the enemy submarine can accurately discover your position at the first time, and then you will be killed immediately with one torpedo.
Two hunters holding guns held their breath in the darkness. One of them foolishly lit a torch in an attempt to find the other.
If you don't die, that's called evil.
If neither side turns on active sonar detection, it will be difficult for nuclear submarines to find each other even if they are face to face.
For example, in 2009.
John Bull's "Vanguard" nuclear submarine and Gaul's "Triumph" nuclear submarine collided with each other during cruise, but no one knew what they hit after the collision.
Therefore, with current human technology, there is nothing we can do against nuclear submarines hidden under the ice.
In a sense.
It can be considered that nuclear submarines under the Arctic ice are equivalent to immortal existences and cannot be destroyed by any means.
And now if this gravity gradiometer can detect the situation inside the mountain in detail under the obstruction of ice slag and the mountain...
No, even if only part of the information is detected...
Then the fun would be great.
...
that's all.
Under the expectant and nervous eyes of everyone.
ten minutes later.
Click click click——
There was another noise from the printer, and a stack of documents that was much thicker than the previous two appeared at the exit of the device.
Zhang Han didn't have time to read the contents of the report carefully, so he quickly put them away and brought them to Xu Yun:
"Dr. Xu, the results are out."
"Thank you, Sister Zhang."
Xu Yun thanked Zhang Han, took the report, shook it a few times like an old doctor looking at a CT scan, and started to read it carefully.
It is different from previous detection of underground pipes and carriages.
It can be clearly seen from the data that the measurement results this time are indeed relatively ‘fuzzy’.
At least it is difficult for Xu Yun to judge the results intuitively with the naked eye - of course, this is also related to Xu Yun's lack of deep understanding of the gradient database.
So he took the initiative to come to the console and retrieved a gradient database.
This gradient database is one of the more public data information databases in China. As long as doctoral students from C9 universities can access it, the threshold is very low.
Bang bang bang——
Xu Yun quickly pressed a few keys, and a list of gradient databases quickly appeared on the screen in front of him.
"B2654..."
"K2528..."
He just faced the screen and began to check the detection results.
after awhile.
Seeing that Xu Yun had not spoken a word, Ge Tongyou beside him couldn't help it:
"Dr. Xu, what happened to the test results?"
After hearing this, Xu Yun came back to his senses, stretched out his hand to gently adjust his glasses, and said with some apology:
"I'm sorry, Professor Ge... I was too absorbed in looking at the data just now. Well... let me report the specific results to you. You can see how they are different from the actual situation."
"By the way, can this data be made public here?"
Ge Tongyou nodded slightly, pointed to the mountain peak behind him, and said:
"Of course. This mountain peak is considered an open material reserve. Before you came, there was a small amount of stuff that was not convenient for the public."
"But these things have been moved out as early as yesterday. The materials or equipment that can be used for 'examination questions' are very common materials or equipment, so you can rest assured."
Xu Yun breathed a sigh of relief, pondered for a moment, and continued:
"Then I don't have to worry. First of all, according to our scan results, the direction is...well, let's start reporting from the south entrance inward."
"According to the gradient report, we detected a gradient difference in meat on both sides of the entrance, and we can clearly confirm that the main category is reserve meat."
"But I can't tell whether it's pork, beef or mutton. After all, it's not a fluoroscopy machine - we can only rule out the possibility of it being Kunkun meat based on the superimposed density."
After listening to this sentence.
Ge Tongyou secretly looked at Li Hua, his expression unchanged, but his hands behind his back quietly clenched slightly:
"continue."
The results reported by Xu Yun were consistent with what he knew, but the entrance to the reserve was relatively outside, and judging from the cross-sectional view, the soil layer above was the least, so being able to detect the results did not fully explain anything.
Xu Yun obviously understood this truth, so he continued:
"The meat reserve area covers about ten meters inside the entrance. According to the detection feedback from the rear, the gradient difference of the main objects shows obvious metallicity and skeleton distribution. It seems that they should be materials such as tents."
"At the same time, some conventional medicines, bandages, alcohol, and some... um, mahjong tables were also detected around the tent."
Hear the word mahjong table.
A slightly subtle expression appeared on the faces of everyone around him.
According to the types of items described by Xu Yun.
The second area is obviously filled with various disaster relief items, mixed with a mahjong table...
Okay, this is very provincial.
Then Xu Yun looked up at Ge Tongyou and found that he still had no expression on his face, so he continued:
"Further inside the tent, you will reach the actual interior of the mountain, which is the central axis of the benchmark mountain. After deducting the internal space, the height of the vertical rock formation reaches 134 meters."
"We detected cement and some 67-style wooden-handled joy bars in this area, plus some items whose specific identities are still unknown. They should be effervescent tablets or water purification tablets?"
"also......"
Talk about this.
Xu Yun paused again and continued:
"We also detected the dismantled alloy plate on the hangar roof of a ship. It should be one of the 22 056 frigates launched in 2013 and retired in 2018." (Just in case I delayed the time by a year,
In fact, he entered the water at 12 and retired at 17.)
Xu Yun didn't hesitate when he said this. After all, this matter has nothing to do with confidentiality:
The reason why the 056 frigates were retired collectively was because other more advanced ships were put into the sea, and they had nothing to do with confidentiality.
Actually.
The Jiujiang ship, which was decommissioned on June 12, 2018, was open to JJ citizens for free in 2019.
At present, some of these decommissioned warships are open to the public for visits, while others have their important parts removed and sent to the third-tier hinterland along the Yangtze River.
For example, among the expired reserve materials that were publicly destroyed in Chengdu in 2011, there was a set of 04 decommissioned antenna arrays - that antenna array was so old that even a small African country could not look down on it, so it was taken out and smelted and destroyed.
At present, the important parts on these decommissioned ships are basically stored in the third-line area.
After reporting these data.
Xu Yun put down the report and looked up at Ge Tongyou and Li Hua.
At the beginning.
Li Hua and Ge Tongyou still kept their faces tight and looked very serious.
But it didn't take long.
The corners of Ge Tongyou's mouth couldn't help but curl up slightly. The arc became wider and wider, and finally...
It turned into a bright smile:
"Hahaha......"
As Ge Tongyou's laughter rang out.
Li Hua's expression couldn't be stretched anymore, his cheeks bulged heavily, and he let out a hearty laugh.
Then Li Hua grabbed Xu Yun's shoulders and patted Xu Yun's back hard:
"Xiao Xu, Xiao Xu, you have really made a great contribution this time!"
"This time we used the shielding effect composed of ice slag and the mountain. Theoretically, the target is an ice surface with a thickness of 1 to 3.5 meters. It is thinnest at the entrance and thickest in the center of the mountain."
"Even the superior... ahem, Assistant Worker Huang, who is from Shantou, estimated in advance that he could only detect the top at about 1.2 meters."
"I didn't expect that you gave us a big surprise this time!"
Talking and talking.
Li Hua's expression even showed a bit of gnashing of teeth:
"3.5 meters, Xiao Xu, do you know what this concept is?"
"The average glacier thickness in the entire Arctic is only 2 to 4 meters!"
"That is to say, when we complete the official upgrade, all the black fish in the Arctic will be unable to escape! Not even a single one will be able to escape!"
As Li Hua said.
Unlike the average ice layer of 1,700 meters in Antarctica, the ice thickness in the Arctic is only 2-4 meters.
At present, this beggar's version of the gravity gradiometer can break through the limitations despite being sloppily assembled, with an accuracy of 3.5 meters.
Then after being perfected by the military industry, there is no pressure at all when it breaks through to 4.5 to 5 meters.
True.
Considering the current international situation, which is still apparently peaceful, even if Rabbit discovers nuclear submarines from across the sea or from other countries under the North Pole, it will not be able to remotely destroy them.
But it doesn’t mean that many things lose their meaning if you don’t use them now. Anyone with a discerning eye can see the strategic value of this thing.
At the same time, more importantly...
Although the core material of this gravity gradiometer is Pangea particles, which are now capable of being prepared by various countries.
However, there are strong barriers to research and development regarding the specific measurement module and structural design - if Xu Yun did not have the drawings awarded by Halo, completing these two links would be equally difficult.
Therefore, unless there is cheating across the sea, there is no need to worry about other countries or institutions mastering this research and development technology in the short term.
Feeling the shoulders being squeezed tightly by Li Hua, Xu Yun was also very excited.
However, as a developer, he knows very well that the gravity gradiometer can be put into practice this time, not just because of his own merit:
"Li Gong, this matter is indeed worthy of celebration, but there is one sentence you said that is a bit too much."
"The results we have achieved this time are far more than my own credit. Professor Ge's balance module and Professor Huang's structural diagrams also played a very important role."
"Without everyone's concerted efforts, I alone would be far from successful."
Li Hua glanced at him when he heard this, and while nodding, a trace of relief appeared on his face.
What made him happy was not that Xu Yun didn't steal the credit, but that Xu Yun could still maintain a clear mind in this situation... or in other words, a pure heart.
be honest.
This is a very rare quality.
Then he shook Xu Yun's shoulders firmly, indicating that he didn't need to worry about others, and explained:
"Don't worry, Xiao Xu, we have a lot more money now, and many of our contributions will not be rewarded in material terms like before."
"For example, I can tell you right now that Lao Ge will follow our internal award process. As for Professor Huang..."
Seeing that Li Hua seemed to want to reward herself, Huang Yuting on the side quickly waved her hand and interrupted:
"Gong Li, I don't have to worry about any awards from the base or the country here - I am already satisfied to see the first test of the gravity gradient instrument today."
"I only have one personal request, which is that when the Yongling excavation is being carried out, I can be allowed to go to the site to observe it in person."
Hear her words.
Li Hua turned his head and looked at each other with Ge Tongyou, and suddenly they both showed a playful smile:
"Xiao Huang, are you sure you don't want this reward?"
Huang Yuting was stunned for a moment.
She noticed the change in the names of Li Hua and Li Hua - except for the 'little girl' when they first met, they all called her Professor Huang at other times...
Then Li Hua turned around and said to everyone who didn't know what was going on:
"Everyone, come with me first."
After speaking, he greeted everyone and walked towards another direction at the foot of the mountain.
After walking about two hundred meters.
The group stopped in front of a warehouse.
Li Hua stepped forward and entered a password and verified his fingerprint. The warehouse quickly opened, revealing an open space inside.
Li Hua pointed inside again:
"come in."
Everyone followed me in obediently.
The passageway of the warehouse is thirty to forty meters long. Taking the opportunity of walking into the warehouse, Xu Yun also saw clearly some details that could not be confirmed by the gravity gradient meter:
For example, the pieces of meat scanned before were pork, hard and cold, and looked like they had been temporarily moved from a freezer for this experiment.
This chapter is not over yet, please click on the next page to continue reading! Another example is that the mahjong table does have its own thing, and the tmd is an automatic model...
Then under the guidance of Li Hua.
The group of people soon arrived at the innermost part of the warehouse, which was also the center of the mountain.
At this time, there are some special cement and sealed wooden boxes placed here. There is no doubt that the 67-type happy stick is in the box.
But compared to these two gadgets, what really attracts attention is an object on the edge of the cement:
This is a tall object wrapped in black cloth. It seems to be three or four meters high, and its surface is 'concave and convex'.
It is clear.
This is the alloy plate on the hangar roof of the ship that Xu Yun and the others detected earlier.
If nothing unexpected happens.
Under the curtain should be the rolling shutter door, communication antenna and so on - of course, this does not include the fire control radar of the anti-aircraft missile.
Seeing that Huang Yuting's expression was still a little confused, Ge Tongyou on the side couldn't help but said:
"Xiao Huang, do you still remember what I said when we first met - I served in the Navy's XX unit a long time ago, and the gravity gradient meter designed by Huang in 2013 was installed in my old unit
The number on the ship is XXXX."
"The ship's life span expired in 2018, and the measurement equipment at that time was much more accurate than in 2013, so the gravity gradiometer was retired along with the ship."
Huang Yuting was stunned again, and then her eyes widened with disbelief:
"Professor Ge, you...you mean..."
Ge Tongyou nodded, without further explanation, pointed to the corner of the curtain and said:
"Pull it open and take a look."
Huang Yuting's heartbeat suddenly began to accelerate,
Then she looked at Xu Yun, Li Hua, and Ge Tongyou.
Then he walked to the edge of the curtain with some anxiety and pulled it gently.
Hula~
As the curtain opens.
A hangar roof alloy plate with a size of about 2X4 appeared in front of her.
In addition to some other small parts on the alloy plate on the hangar roof, the most conspicuous thing is a black instrument over one meter high.
The moment Huang Yuting saw the instrument.
My vision became a little blurry.
She walked gently to the instrument, skillfully touched the side of the instrument, and her fingertips touched a small screw cap.
It was the summer of 2013, and the instrument was completed in the same month as her master's degree graduation.
At that time, Huang Danian specially applied for a formality and took Huang Yuting into the research and development center of the North Sea Fleet. Huang Yuting personally tightened the last screw of the instrument.
This is also the first high-sensitivity shipborne gravity gradiometer equipped by the Navy.
The location of the screw... was exactly where she was touching it.
Now, ten years have passed.
Unexpectedly, she saw this instrument again in Xichang today.
And just as Huang Yuting was filled with emotion, Ge Tongyou's voice sounded from her ears again:
"Xiao Huang, there is something I want to tell you."
"Considering that the current accuracy of this gravity gradiometer no longer has confidentiality value, the base has decided to terminate its reserve mission and return it to you after discussion and approval from above."
"In addition, the base is also preparing to sign a designated project agreement with Jilin University, with an initial investment of 4 million to fully support your research."
"If you have no objection, we can make the relevant handover after returning to the headquarters..."
Ge Tongyou didn't finish his words.
Huang Yuting's eyes were filled with tears, and her nose was sore. Two hot tears slid down her cheeks and fell heavily on the metal shell of the instrument...
...........
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