Zhuang Bo spoke up in a decisive manner: "The ice has been rummaged through, and we haven't even found a single hair, so we can basically be sure of the location of the aliens." However, it is not so easy to find the enemy, you must first penetrate the ice and then put the drone down, but there is still a question here, that is, whether the drone can adapt to the special environment under the ice. ”

Wu Han nodded and said: "I thought of going with the deputy commander, the ice in this place alone is more than 100 kilometers thick, you can imagine how big the water pressure under the ice is, although our drone is specially designed, but it is mainly for the vacuum environment of outer space, soaking in the sea with such a high pressure......" Speaking of this, he shook his head, very optimistic about the drone.

A captain spoke at the right time: "Chiefs, I don't think drones can be used, it's not just that they can't open up the ice, the ice is more than 100 kilometers, but aliens will not honestly wait under the ice, right?" They must be hiding in deeper water, where the pressure is definitely higher than under the ice, and the environment is harsher, not to mention drones, even if a real deep-sea submarine comes, it may not be able to get down. ”

Huo Qiang nodded: "It makes sense, those aliens who landed on the earth have been hiding in the deep sea, and no one knows where they are until now, but we can't stop because of difficulties, and we called you here just to brainstorm and find a way...... Zhuang Bo, you are from the navy, can you calculate how much pressure there is? ”

Zhuang Bo calculated in his heart: "The water pressure of the 10,000-meter deep sea on the earth is one ton per square centimeter, and the gravitational force of Europa is 1.314, which is simply converted, the same depth is 134 kilograms per square centimeter, which is equivalent to a thousand meters below the earth's water." ”

Hearing this, many people breathed a sigh of relief.

But Zhuang Bo didn't finish speaking, he only heard him say again: "The ice shell alone in this ghost place is 100 kilometers, and the sub-ice pressure is 1.34 tons in equal proportions...... Why is it so high? ”

Huo Qiang asked suspiciously, "Is ice the same as water?" ”

Zhuang Bo shook his head in annoyance: "I'm only familiar with water pressure, and I really don't know ice pressure." ”

One of the captains hesitated and said, "Commander, I don't want to emphasize the difficulties in contradict the key, but is it too early to talk about water pressure or something?" ”

Huo Qiang frowned: "Don't say half a word!" ”

"I want to talk about the plume problem, the shaft that the Yushan opened blew out for more than an hour before it stopped, which shows that there is pressure under the ice, and the pressure is not small, this thing is like a blowout, if you don't solve this problem first, don't talk about drones, submarines don't think about going down."

Huo Qiang's already serious face added a bit of gloom: "It's indeed a good question, you can discuss it." ”

"Doesn't the plume have something to do with the tides?" Ye Han, who had not spoken, finally opened his mouth, "If you start when Europa is the farthest away from Jupiter, wouldn't it be better?" ”

Several captains who thought of this closed their mouths unwillingly, and they all understood what Ye Han meant.

As we all know, Jupiter's gravitational pull is very strong, and the distance between Europa and Jupiter is very close, this moon orbits Jupiter in an elliptical orbit, and when it is close, it is stretched by Jupiter's gravity, and when it flies away, it recovers because of its own gravity, like a dough that will be rounded and flattened

Europa's orbital cycle is three and a half days, that is, Jupiter's cycle of three and a half days to Europa repeats itself over and over again for countless years.

Both the ice shell and the subglacial ocean are constantly deforming as Europa rotates, and this deformation is highest when approaching Jupiter, so geysers on Europa always appear when they are close to Jupiter.

Ye Han thought of this and made this suggestion.

Huo Qiang looked at Wu Han: "Chief of Staff, where is Europa at the moment?" ”

This was a clueless statement, but Wu Han understood what Huo Qiang meant: "One more day to the near wood point." ”

Huo Qiang's eyebrows twisted into a lump: "Wait two and a half days to get to Yuanmu?" ”

"Yes!" Wu Han nodded.

Huo Qiang rubbed the corners of his forehead: "It's too slow......"

Zhuang Bo was about to speak, but he didn't want Ye Han to suddenly slap his forehead: "No, no, Commander, Europa is locked by Jupiter, we don't have to wait at all, just make a hole in the back!" ”

This is not as easy to understand as just now, but everyone knows what Ye Han means after thinking about it for a while.

The so-called tidal lock is that the satellite is always facing the parent star, just like the Moon and the Earth.

Europa is always facing Jupiter head-on, which means that the ocean under Europa's ice crust will only rise in the direction of Jupiter, and it has nothing to do with Jupiter's backside, and even if the deformation of the ice crust has an effect on the backside, it can't be as exaggerated as the front.

Thinking of this, the atmosphere in the venue instantly became warm.

Zhuang Bo immediately replaced the words that came to his mouth: "Commander, what Ye Han said makes sense, we don't have to wait at all, the closer we get to Jupiter, the more the water under the ice will swell to the front, this is no longer a matter of pressure, maybe a cavity can be formed under the ice, and the near wood point is not only not a trouble, but an opportunity for us!" ”

Wu Han said: "Not necessarily, as soon as the ice is cleared, the water below will boil, even if there is a cavity below, it will be full of steam, and the steam will definitely gush up, and in the end it will not go down!" ”

"That's easy, stop when you're about to get through, put the drone in and then seal the ice cave......" The outspoken captain couldn't go on halfway through his speech, and added curtly, "It doesn't seem like it works......

"That's definitely not going to work, how can the signal come out?" Wu Han glared angrily.

UAVs are all remote-controlled devices, but this is not a matter of remote control or not, but after the ice cave is sealed, no matter what the drone sees, it cannot be transmitted to the battleship.

"Would it be okay to add an antenna to the ice?" Zhuang Bo asked.

"You can try, I can't say if it works, I have to ask the technical department." Wu Han said.

Huo Qiang said: "Then ask right away, let the technical department find a way to solve it!" ”

Wu Han nodded: "I'll arrange it immediately!" ”

Zhuang Bodao: "It's best to prepare with both hands, if the drone doesn't work, you must arrange people to go down." Before the words fell, his gaze had already fallen on Ye Han.

Ye Han's heart suddenly shook, and he said in his heart, what do you think I am doing?

Huo Qiang thought for a moment: "If it can be solved by machinery, it is resolutely not necessary to use people, and for the time being, use drones first, there is really no way to consider people." ”

Although I don't know what's going on under the ice, I know with my ass that it has nothing to do with safety, it's easy to go down, and it's hard to say if I can come back alive.

Zhuang Bo agreed: "The question now is that the drone will definitely not be able to withstand too much pressure, so what about the power armor?" ”