Phobos is so small, an irregular celestial body measuring 27 × 22 × 18 kilometers. Its gravity is so pitifully small that even if you stand on Phobos and jump as hard as you can, you can break away from its gravity and fly into space!
Its gravity was basically useless to the engineering boats. The two engineering boats flew towards Phobos in a swaggering manner. The engines used only a small amount of power to stabilize their attitude. Then the two boats split into two groups and landed on Phobos respectively.
both sides of.
The engineering boat did not land on the surface of Phobos, but flew horizontally and at low speed close to the surface of Phobos. Various instruments on the boat continuously collected data along the way and recorded them one by one in the equipment.
Ye Han poked his head curiously, staring at Xu Moliang and the driver curiously.
Xu Moliang accidentally turned around and saw Ye Han with his neck crooked. He couldn't help but be stunned: "Captain Ye? What are you..."
Ye Han straightened his head and smiled openly: "I'm a little curious and want to see how you do surveying." He had learned a lot about astronomy, but this was his first time surveying extraterrestrial objects.
Xu Moliang suddenly realized: "Hey, let me tell you, it's actually nothing. I just use remote sensing technology to find out. First, get a preliminary situation and draw a few key areas, and then conduct a detailed investigation on the ground."
"Oh!" Ye Han seemed to be stunned, but actually he still didn't understand much.
The survey continued. The two engineering boats spent a good time scanning the surface of Phobos back and forth, even the most remote corners. They did not complete the preliminary survey until they obtained the three-dimensional model of Phobos.
Xu Moliang called up the three-dimensional model from the system and carefully studied the data of Phobos.
Ye Han also floated over curiously, watching the excitement with wide eyes.
You won’t know it by looking at it, but you will be shocked at first glance. The geology of the small Phobos is quite complicated. From the model, you can see solid rocks, scattered water ice and loose gravel.
Xu Moliang concentrated on it and drew an arc in the corner of the model as a mark, and then added another one behind the arc.
Just like this, Xu Moliang painted one stroke after another. After a while, the good model was messed up, with curved lines everywhere, as if it had been scratched by a cat.
Ye Han couldn't understand and couldn't help but ask: "Xugong, what are you doing?"
"We'll start prospecting based on these lines soon... Hey, why are you so close to me!" Xu Moliang leaned back in disgust, keeping a safe distance from Ye Han.
Ye Han almost spat blood on the screen: "What's that expression on your face?" He said to himself, I don't think I think you are sloppy yet, you are the evil one to complain first!
Xu Moliang looked serious: "I am a straight man!"
Ye Han was furious: "I'm not a fucking crook!"
"Then why are you so close? Keep a safe distance!" Xu Moliang crossed his arms, indicating that it was forbidden to get closer.
Ye Han felt bad all over, and simply stepped away, thinking to himself who sent this second-rate guy? Is this someone sent by God to play with me?
The soldiers who saw this scene all snickered.
Xu Moliang devoted himself wholeheartedly to drawing lines. After a while, he finished the last stroke and breathed out: "Captain Ye!"
"What are you doing?" Ye Han had no intention of moving forward at all.
"This!" Xu Moliang pointed to the three-dimensional model of Phobos, "I drew lines on the model, and every point is labeled. I'll trouble you and your troops later... uh, punch holes and sample in order!"
"What about you?" Ye Han asked in surprise.
"Of course I want to see Deimos." Xu Moliang said matter-of-factly.
"Wait a minute, what's going on with these lines?" Ye Han asked, pointing to the three-dimensional model.
"This is simple!" Xu Moliang also pointed to the model, "Did you see it? There is a hill here."
Ye Han nodded: "I saw it, what next?" On the model, three lines were drawn on the hillside that were enough to cut off the mountain peak.
"Now we only know the surface situation, but I need to know the situation deep underground." Xu Moliang pointed to the first line, "This mountain is particularly suitable for blasting. If the ground is full of rocks, then this line
Drill holes and blast; if it is gravel or water ice, blast on the second line; if it is worse, blast on the last line. No matter which line is blasted, the mountain top cut off will have a million tons. This mass
Io is the easiest."
Only then did Ye Han understand Xu Moliang's intention of drawing so many lines. Looking carefully, all the protrusions on Phobos had been marked by Xu Moliang, and they were all three lines.
But he suddenly saw a circle drawn in the crater in the middle of Phobos: "What's going on?"
Xu Moliang saw clearly where Ye Han was pointing, and then said calmly: "There is probably a meteorite here. Based on the size of the crater, if the meteorite is still at the bottom of the crater, it must be in this circle!"
Is this okay? Ye Han couldn't believe his ears.
Xu Moliang waved his hand impatiently: "Okay, you don't need to know why, you just need to know what to do. Just follow the marks on the map to take samples."
"Okay, you have the final say!" Ye Han had a constipated expression on his face.
It's not that he's petty, but Xu Moliang's attitude is really annoying. Why didn't you realize he was such a person when we first met?
But it's not too late to know now. Ye Han immediately asked: "What should I use to hit my eyes?"
"There is a drill bit behind the engineering boat. You don't need to dig too deep. Just take a sample from twenty to thirty meters away." Xu Moliang said.
"Okay, got it." Ye Han agreed and immediately took over the boat No. 1 and flew to the nearest line.
Ye Han didn't understand the situation of Phobos and didn't know where the lines on the model were. Fortunately, the pilot was familiar with the situation and quickly flew the engineering boat to the foot of a desolate hill.
The engineering boat slowly approached the hill, and leaned over diagonally. Several ropes were suddenly stretched out from under the boat, and the steel anchors on the rope heads were deeply inserted into the ground. Then the engineering boat tightened the cables and pulled the engineering boat towards the hill. Soon
The engineering boat was fixed on the side of the hill, almost vertically on the mountain wall.
The driver started the drilling rig, and the drilling rig placed behind the boat automatically stood up. The drill bit was first pressed on the ground, then rotated rapidly, and drilled into the ground in a short time.
Ye Han didn't think anything of it, Xu Moliang frowned deeply: "No, the drill bit is too fast!"
Ye Han was very puzzled: "Isn't it bad?"
"Of course it's not good. The faster you drill, the lower the density. Do you understand?"
"Now I understand... what is the density now?" Ye Han saw that the drill bit had penetrated seven or eight meters into the ground.
"It's very low. It's basically water ice." Xu Moliang's eyes were glazed over and his voice was deep. "Such a density can't be used at all... Forget it, I've beaten you all. Go ahead and drill deeper.
