The six of them braved the torrential rain to return to Cassini Station, the spacecraft could no longer be recovered, they had to give up, and the next priority was to repair the energy capsule.

"Is it enough?"

"Hmm......" Dai Yue sat on the floor with all the superconducting cables in front of him, and muttered for a few seconds, his brows furrowed more and more, "It's hard to say." ”

According to calculations, the superconducting cable in their hands is only 6,000 meters long, and the exact figure is 6,000 and 21.46 meters, and the "Hades" prospecting ship has dozens of kilometers of HTSC, and they only have time to remove the 6,000-kilometer-long cable, which is only a small part of the total, and unfortunately they can't continue to get more superconducting cables.

Dai Yue pulled out a superconducting cable and slowly elongated, this cable looks extremely thin, in fact, there is a lot of good, the structure of the superconducting cable is complex, in addition to the core yttrium barium oxide superconductor, the outer layer is wrapped with a micron-level insulation layer and shielding layer, such a wire is still incredible black technology thirty years ago - at that time, the superconducting cable is still a representative of stupid and thick, and even needs metal materials to do thermal insulation and refrigeration, thanks to the rapid development of superconducting technology, today's superconducting cable has been able to do as fine as a hair.

But Dai Yue would rather have the coarse water pipe in his hand at this moment.

The transmission lines inside the "Hades" spacecraft are well protected when they are inside the prospecting ship, after all, they are delicate parts, unable to resist the harsh environment of the outside world, Dai Yue is a little worried about whether these cables can still work if they are directly exposed to the extremely harsh environment of Titan.

What if a sudden gust of wind blows and the cable is torn apart?

"It's six kilometers long, and we need to cut them off." Dai Yue said, "Cut it into 300 meters per section, and then integrate it." ”

Just do it, Dai Yue picked up the vice, picked up the plie, and cut off the cable with a "click".

Others watched with horror.

This is too rough.

"This ...... Is it okay to do that? Ge Zi asked weakly.

"Questions? What's the problem? Dai Yue picked up and fell, and the broken cables were piled up on the floor.

"It's as simple and crude?" Mu Mu was also a little surprised.

"It's as simple as that." Dai Yue clicked and nodded, "Haven't you repaired a light bulb before?" ”

"Yes...... But this is a superconducting cable. Mu Mu hesitated.

"This shows that your knowledge of them is still stuck half a century ago, and in the early days superconducting cables could not be cut, because they were filled with liquid helium and liquid nitrogen in metal pipes, but technology is always advancing rapidly in places you don't know." Dai Yue waved the pliers in his hand, "The current superconducting cable can be cut at will...... You can cut it however you want, and if you want, you can tie a bow. ”

Dai Yue cut all the cables, each section is 300 meters long, a total of 20 sections.

He tied up the twenty cables and connected them to superconducting connectors at both ends.

“…… Seventy-nine five two and a half times, the pipe temperature is eight or nine folds, the bare wire is increased by half, and the copper wire is upgraded. Dai Yue snorted softly, "These are all 1.5 square lines, what is the formula for calculating the current carrying capacity?" Do any of you remember? ”

The rest of the people stared at each other, then shook their heads in unison.

"Forget it, if you don't remember, you can't remember, it doesn't matter anyway." Dai Yue said, "The current carrying capacity of the cable is related to its area, we have 20 wires in our hands, and the total cross-sectional area should be 30 square meters." ”

"Thirty squares?" Ge Zi asked.

"Thirty square millimeters." Dai Yue explained.

"I remember that to fully meet the requirements, a cross-sectional area of twenty-five square centimeters was required." Zhuo Zhi said that he remembered that the normal current carrying capacity of the HTSC inside the prospecting vessel "Hades" was 200A squared.

Everyone present gasped, and they cast worried eyes on the thin and delicate cable in Dai Yue's hand, which had a cross-sectional area of only thirty square millimeters, and the cross-sectional area required twenty-five square centimeters to withstand the current of a thunderstorm, the former was only one and two hundredths of the latter.

Using it to withstand the current of a thunderstorm is equivalent to pouring all the water from a huge reservoir into a water pipe in a short period of time.

It's strange if it doesn't explode.

Dai Yue piled the bundled cables on the floor one by one, Ge Zi reached out and grabbed one end, the multiple strands of cables were only slightly thicker than her index finger, and the twenty superconducting cables were neatly put together, and the ends were tucked into a joint.

Zhao Mumu handed a fifty-centimeter-long metal hollow tube to Dai Yue, the thickness of his fingers, this is the largest antenna base on the "Hades", in the next lightning guidance work, it is a lightning receiver, and the high-voltage arc of the thunderstorm is in direct contact, the material of this thing is tungsten alloy, the melting point is as high as 3,500 degrees Celsius, it can ensure that it is not melted by high temperature in the lightning strike.

Dai Yue took it, checked it, and then tried to connect it to one end of the superconducting cable.

"It's as simple as that?" Mu Mu was a little curious.

"Of course it's not that simple." Dai Yue shook his head, "Because the spaceship doesn't know where it is going, we have fewer cables in our hands than expected, and it is very likely that the cables will fail directly, so I still have to make an SPD." ”

“SPD？” Mumu heard the word for the first time.

"Surge protector." Stern explained.

"Yes, surge protectors." Dai Yue nodded, "Or called overcurrent protector and overvoltage protector, in daily life, it is used to protect electrical appliances from being burned out by instantaneous high voltage or high current, simply put, this thing is used to protect against lightning strikes, have you heard of the fuse?" Similar to a fuse, the fuse is blown as soon as the current exceeds the upper limit, thus protecting the consumer...... It's just that we don't use fuses, we use bleeder current elements. ”

"Do we have such a thing?" Ge Zi asked.

"Nope." Dai Yue smiled, "But we can make one." ”

Surge protector is essentially a grounding wire, but it is a ground wire with resistance, once the voltage or current exceeds the threshold, the protector is broken down, and the instantaneous high current is introduced into the ground, in the most common use scenario, the surge protector is used for weak current circuits, such as the protection of ordinary household appliances - and the "Hades" unit crew will build the next transmission network is not a weak circuit, it will transmit a strong current of 10 billion volts and 500,000 amperes, which is higher than the ordinary ultra-high voltage transmission line.

SPDs are very common electrical components, and Dai Yue is sure that they are present at Cassini Station.

But there's certainly nothing that works here.

"The simplest SPD is a pair of horns." Dai Yue said, "A very old thing, called the arc angle, you may not have seen it much, this thing has now been obsolete, and it used to be used a lot, especially on the high-voltage power grid. ”

He drew it to show the intention to others, and it was a very simple structure, that is, two metal rods that do not touch each other are bent outward into a horn shape, and there is nothing else, under normal circumstances, the two electrodes are insulated from each other, and the current cannot pass through, and once the voltage is too large, the air between the two electrodes is broken down to form a high-voltage arc.

Since the shape of the electrode is widened outward, the arc does not stay for a long time, but is continuously elongated along the direction of the electrode extension and finally extinguished.

It's a simple air discharger.

Dai Yue found two metal rods and made a large one with a crunch of a vise.

Shi Teng, Liu Peijia, Zhao Mumu, and Zhuozhi Ge Zi looked at the two metal rods in his hand, and felt that he was like a charlatan holding a dragon ruler...... I hope that this protector in his hand will not be as nonsense as the dragon ruler.

·

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When the rain outside was a little lighter, Shi Teng and the others began to move.

The truncated superconducting cable is 300 meters long, and the distance from the bottom of the communication tower to the fusion reactor is 250 meters, and the height of the communication tower after the destruction is more than 50 meters, and the length of 300 meters is barely enough.

Six people touched the bottom of the communication tower along the safety rope, Dai Yue climbed to the top of the tower with a bundle of cables on his back, tied a heavy object at the end of the cable, and threw it from the top of the tower.

Dai Yue watched the thin cable fall down into the dense fog, and thought it was like the cable of an alpine cable car, starting from the top of a very high mountain, all the way through the clouds and mist, and finally reaching another mountain.

If you tie some gadgets to the cable and let it slide all the way down, it should be able to slip into Sten's hand, right?

For safety reasons, the flash receiver has not been installed, this is to prevent lightning strikes during the installation of transmission lines, and high-voltage currents will kill Stension along the wires.

"Dai Yue, how is your situation above?" Liu Peijia's voice came from the earphones, and Liu Peijia was responsible for staying at the bottom of the communication tower.

"No problem." Dai Yue replied, "I should go down, there may be thunder later." ”

Twenty years ago, when Cassini Station was still in normal operation, the communication tower was a master who was often struck by lightning, and under normal circumstances, no one was allowed to go to the top of the communication tower, especially after the windshield was destroyed, without the windshield for shielding purposes, it was undoubtedly more dangerous to stand on the top of the tower.

If it weren't for the sake of pulling the line, Dai Yue didn't want to come up, in order to save the high officialdom, he could only throw the cable from the top of the tower, and could not pull the cable from the maintenance channel inside the tower, so the length of the cable would not be enough.

Dai Yue slowly slid down the gangway, and Liu Peijia was nesting on the edge of the hatch.

"Are they gone?"

"Gone." Liu Peiji pointed to the cable above his head, the blue superconducting cable fell from the tower, forming a catenary line extending into the dense fog in front of him, the wire was trembling slightly, it can be imagined that the other end of this line is tied to Sten's body, and Sten is taking it to the fusion reactor at the other end of Cassini Station.

Dai Yue looked up at the sky and prayed in his heart that the wind would not rise at this moment.

Don't get windy for at least twenty minutes...... The storm of this world has been blowing for billions of years, and it is not bad for these twenty minutes, God willing.

Stern carefully tugged at the cable and walked along the safety rope.

In front of him was Zhuozhi, and behind him were Ge Zi and Zhao Mumu, both of whom held the cable with both hands and put the wire little by little.

"One! Two! Three! Jump! ”

Following Steng's command, the four of them raised their hands and jumped forward in line.

"Very good, come again, one! Two! Three! ”

The team jumped forward again, like a writhing caterpillar.

The four of them escorted this cable together, lined up on the ground and staggered, and if there was thunder at this time, they could kill four at once.

"Beware, beware...... "Shi Teng has never been careful in his life, "Xiaozi, you raise your hands a little higher, don't trip, if you tear the thread, it's over." ”

"It's been lifted to the top." Ge Zi pouted, "I don't have to beat around the bush so much when I'm short." ”

Mu Mu turned his head to look, the communication tower was no longer visible, and the cable seemed to be born out of the thick fog.

"Brother Shi Shi! Have you arrived? Dai Yue came to urge, "Time is running out, we have to get it done before the weather deteriorates, the soldiers are fast, Brother Shi!" Faster! Faster! ”

"Right now, right away, I've seen it, I've seen it......"

Steng had already seen the outer shell of the energy chamber, and he wanted to speed up, but he was afraid of falling, so he could only run in small steps.

"Okay, I'm in! Successful shot! Home run! ”

He led the line into the energy cabin, took the last step into the hatch, and let out a sigh of relief, the superconducting cable was only a few meters long when it was pulled here, and Mu Mu quickly removed the spare battery from his body, quickly connected to the control system of the energy cabin, and entered the preparatory ignition mode.

The ignition system of the energy chamber has been dismantled, and Stern drills into the control system of the fusion reactor, connecting the superconducting cable to one electrode of the laser, and the other electrode directly to ground.

Steng tightened the screws, slapped the control panel of the energy chamber hard, and shouted, "That's it!" ”

Dai Yue, who had been waiting for a long time, climbed the communication tower, plugged the superconducting cable into the flash connector, and then erected the flash connector on the top of the tower, and then installed the protector and connected the protector in parallel with the circuit.

Dai Yue's hands were trembling when he turned the screws, and he had already noticed that the sky was changing above his head, and it was raining heavily.

It's like demining or defusing a bomb...... You don't know how long it will take for the time bomb in your hand to explode, it may explode in ten minutes, or it may send you to the sky in the next second, Dai Yue is dancing with death.

A dull rumbling sound could be heard from somewhere.

Dai Yue's heart sank, he stuffed the last screw into the screw hole, and then tightened it.

Do all this, Dai Yue pulled out his legs and ran, the transmission network has been completed, now it is an extremely dangerous high-voltage discharger, the thunder and lightning generated within a radius of ten kilometers will be split here, except for tungsten alloy, anything left here is a dead end, if you don't want to die, the farther away from it the better.

"Run! Run! Run! Run! Dai Yue shouted.

Liu Peijia, who was waiting at the bottom of the tower, fled frantically, and disappeared in the blink of an eye.

"wait for me!" Dai Yue scolded angrily, this two hundred and five, the speed of escape is really fast.

Dai Yue jumped down directly in the last few steps of the gangway, he frantically rushed out of the communication tower, and ran back with a rolling belt, at this time, he couldn't care about gravity or gravity, and he had to fly back.

The moment Dai Yue rushed out of the communication tower, there was a dazzling white light above his head, not so much a lightning bolt as an explosive flash bomb, it was an oncoming ball lightning, the divergent high-voltage arc pierced the humid air, making a piercing crackling sound, Dai Yue had just run two steps, and a huge electric current penetrated from the top of his head, flowing through his body and into the ground, making a huge explosion.