"If only the core area was still there." The black bear sighed helplessly.

Guarding the tons of fusion fuel in the fuel tank of the Guardian, he still couldn't think of a way to send the fusion fuel to the ground, so he could only sigh with joy, and his heart was really not a good taste.

If you can enter the core area and obtain the control of the Guardian, you can open the engineering compartment on the battleship, and you can temporarily build several suitable pressure vessels.

"Isn't there a way at all?" Fenghua asked without giving up.

The black bear shook his head with a wry smile: "I can't think of it." "There was no shortage of pressure vessels on the battleship, but the metal canisters for fusion fuel were too large to fit into a lifeboat. If you throw the fuel tank directly into the atmosphere, it is estimated that it will not be able to wait for it to land, because the pressure in the tank is too great, it will explode directly in mid-air.

"Let's ask the following and see if you have any good ideas." Fenghua built yì road.

The black bear reluctantly nodded: "Okay." "It's a shame to not even be able to do such a simple thing, and he doesn't want to trouble everyone in his heart.

Fortunately, he has not yet reached the point of disregarding the collective interests for the sake of that useless face.

Fenghua took the initiative to take on the important task of connecting with the ground, and told the situation faced by the two, but this problem also stumped Ye Fei.

Not to mention that the engineering cabin of the Seed Source has been finished, even if it is intact, the pressure vessel manufactured will not be able to be sent to the sky.

Ye Fei, who had nothing to do, put his hope on the others: "Help think about it, is there any way to use it." ”

He Yue had no concept at all, and Jiang Xue was no better. Ruan Peng was also silent, only the scissors that were cutting the floor complained: "There is nothing to load, just pour the liquid hydrogen directly into the lifeboat, anyway, the old bear is wearing armor, and it is okay to soak the liquid hydrogen inside, and it is a little bit to get it down." ”

Ye Fei couldn't help but nod when he heard this, this was a helpless way.

The lifeboat itself is an airtight structure, and the fusion fuel poured into the boat can be brought to the surface even if it is completely vaporized, and a small amount is better than nothing.

Jiang Xue was angry when she heard it: "Don't talk nonsense." Is liquid hydrogen said to be brought? Before it reaches the ground, it has to explode in the sky. ”

"What's wrong again?" The scolded scissors are inexplicable.

"What's wrong?" Jiang Xue said angrily. "What's the temperature in the lifeboat?"

"Needless to say, room temperature!" Scissors answered as a matter of course.

Lifeboats are usually used in emergency situations, and the crew simply does not have time to wear pressure suits at such times, so after the lifeboats are activated. The temperature inside automatically rises to room temperature. to protect the occupants of the boat.

"That's it!" Jiang Xue said. "The temperature must be maintained at more than minus 250 degrees Celsius in order for the liquid hydrogen to remain liquid and the temperature to rise to room temperature. Liquid hydrogen must be vaporized, and it is no wonder that the lifeboat is not burst by pressure. ”

"Hey, that's troublesome!" The scissors cut off the last point of connection to the floor, and handed over the embossed floor of a few square sizes to He Yue, who was in charge of transportation, "It would be nice if it was solid hydrogen, and it would be nice to empty the air in the survival boat directly, and you could bring it down a little anyway." ”

"Great idea!" Ye Fei's eyes lit up when he heard this, "Old Xiong, did you hear that?" ”

"I heard that, but there's only liquid hydrogen in the fuel tank, where can I find solid hydrogen?" The black bear was deflated again.

Fenghua covered his face armor.

Ye Fei was stunned, and soon laughed mischievously: "Old Xiong, in fact, this matter is quite simple, I know it." ”

"Know what?" The black bear asked blankly.

"Liquid boiling will take away a lot of heat, what else can it be!" Ye Fei said with a smile.

"Huh?" The black bear froze and asked incredulously, "You mean, deflate the storage tank?" ”

"It's okay to just dig a hole." Ye Fei said.

The Defender's outer armor has been lifted, and the inside of the ship is an absolute vacuum environment, and the transfer of heat in the vacuum environment is ridiculously slow, as long as the liquid hydrogen in the fuel tank comes into contact with the outside world, the hydrogen in the tank will quickly vaporize due to the loss of pressure.

The large amount of heat taken away by vaporization, the remaining liquid hydrogen will not take long to solidify.

As long as the solidified hydrogen does not absorb heat, even if it is exposed to the pressure vessel, it is nothing, and it is not known how many times easier to transport than liquid hydrogen!

In the vacuum environment in space, the background temperature is only 3K, and unless the sun shines directly, there is no place to absorb heat.

If not, how could those dirty snowballs of solid-state gases on the outskirts of galaxies survive billions of years?

The black bear, who suddenly realized that he had nothing to say, immediately began to prepare.

Although the core area of the Guardian was gone, the escape system was not completely ineffective, and the black bear quickly found the two lifeboats, removed the air tanks from the boats, and was half ready.

The next step is to make zuò solid hydrogen, which is even simpler, twist the valve of the storage tank and wait for the liquid hydrogen in the tank to condense.

In order to improve efficiency, the two of them opened all the storage tanks in the entire fuel tank in one go, and the liquid hydrogen in the tank immediately began to boil violently, and it didn't take long for a layer of snowflake-like solids to condense in the tank.

Solid hydrogen was made, but how to take it out made it difficult for the black bear.

These canisters are designed to store liquid hydrogen, and the part that communicates with the outside world is just a tube slightly thicker than a finger, and it is impossible to get the solid hydrogen out of the guò pipeline.

In desperation, the black bear had no choice but to cut the storage tank, but the heat generated during the cutting caused the solid hydrogen in the storage tank to melt a lot, and finally the storage tank more than a person high, only got a snowflake-shaped solid hydrogen that was almost full of a sea bowl.

Fortunately, there were still many storage tanks, and after cutting all the storage tanks, Xiong and his wife got a basin of solid hydrogen, which weighed only a few kilograms.

After sending the solid hydrogen to the lifeboat and carefully placing it, the two of them breathed a sigh of relief at the same time, and were about to drive the lifeboat away, when the black bear suddenly had an idea, and rushed to another fuel tank with the compressed air canisters removed from the two lifeboats, and emptied all the compressed gas in the air canisters to ensure that there was no solid air left, and after he filled the two metal canisters nearly one meter high with liquid hydrogen.

After returning to the lifeboat with these two metal cans, the black bear couldn't help but sigh: "I thought of this thing earlier, and I spent that much energy to do solid hydrogen!" "Two jars of liquid hydrogen, about 30 kilograms, are several times the amount of solid hydrogen in that basin.

Fenghua smiled slightly: "It's all done, take it with you." (To be continued......)