Johnson, chairman of the Committee on the Outer Space Operations, representative of the Hans family of the Western Space Agency, Rhine ?? Feng?? Groot, forced to have no choice but to take a plane to Dongtang overnight.

The other side.

Huang Haojie is in the airship research institute these days, and he is developing a new airship.

Since the hydrogen airbag airship has almost reached its limit, among the airships manufactured by the Airship Research Institute, the highest airship that can fly is the ring-type airship A 14, which can fly to an altitude of about 63 kilometers.

At this limit, it is very difficult to lift, and the only way to increase the height is to reduce the payload.

However, the airship has reached an altitude of 63 kilometers, and the payload is already less than 15 tons, and if the payload is reduced, the airship will be of little use.

According to the estimates of the Airship Research Institute, reducing the payload to about 10 tons can raise the altitude to an altitude of about 72~74 kilometers.

"Boss, we have made a ring-shaped airship according to your instructions, all the materials and equipment are made of the lightest materials, even the battery of the airship is the most powerful battery of the Thor Group (3214 watt-hours per kilogram), and the solar power generation film has been abandoned." The director of the Airship Research Institute hurriedly introduced Huang Haojie in the summer.

For this summer of replacing Wang Tu as the director of the airship research institute, Huang Haojie is still quite satisfied.

"How much has the dead weight of the airship been reduced?"

"About 21%." Summer hurriedly replied.

"21%, how high can this airship fly if it carries 1 ton of payload?"

Summer thought about it and replied, "I estimate that it can reach an altitude of 85~87 kilometers. ”

"Is that so? Then you have someone to test it and report back the data. Huang Haojie commanded.

"Okay, I'll do it right away."

In the summer, when he went to arrange the airship test, Huang Haojie turned over the situation of this ring-shaped airship armor 17 type, although the height was increased, but the cost soared.

The cost of an ordinary ring-shaped airship is about 1500~30 million Martian coins, but the cost of this new airship is as high as 130 million Martian coins.

After all, many materials should be light and strong, plus other requirements, the cost of these materials is enough, and the cost of soaring costs is inevitable.

However, even if it reaches an altitude of 85~87 kilometers, it still does not meet Huang Haojie's requirements, and he wants the ring-shaped airship to reach the Kármán line at an altitude of about 100 kilometers.

If the airship can do it, there is no need for a space station to pull the magnetic vacuum cable, because for the space station to come to the magnetic vacuum cable, the height requirements of the space station are very high.

At least thousands of kilometers of magnetic vacuum cables should be made, such a long magnetic vacuum cable, not only is it very difficult to make, but also the power required to stimulate the vacuum state is also very huge, which will outweigh the losses.

If it could be maintained near the Kármán line, there would be no need for such a long magnetic vacuum cable.

The altitude is 60 kilometers ~ Kármán line, the length is about 40 kilometers, and the magnetic vacuum cable plus the normal temperature superconductor cable, the weight of one kilometer is about 4.7 tons, and 40 kilometers is 188 tons.

The altitude is 60~87 kilometers, the distance in the middle is 27 kilometers, the weight of the cable is about 127 tons, and the average payload of the new airship is 12.5 tons.

This distance alone would require 11 airships.

The airship is at a height of the Kármán line, and I don't know if there is 1 ton of payload left, and these situations need to wait for the summer when they test the data of the new airship before they can proceed to the next calculation.

However, Huang Haojie is still trying to find a way to increase the payload of the airship, using hydrogen airbags as the buoyancy of the airship, which has been developed to the extreme by Galaxy Technology, and it is really the peak, to the point where there is no way to rise.

Summer is back.

"Boss, I've arranged it."

"Then let's go to the lab!" Huang Haojie said.

"Yes, the materials and equipment ordered by the boss have been prepared." Summer hurriedly led the way.

Come inside the lab.

The materials and equipment that Huang Haojie had instructed them to prepare had already been prepared.

Magnetic vacuum thin film, laser welding AB gel, laser welding equipment, vacuum testing equipment ......, these equipment and materials have been neatly in the laboratory, waiting for Huang Haojie to do experiments.

After putting on his protective suit, he took out a piece of magnetic vacuum film, which had been made into a balloon in advance, but there was no electromagnetic excitation at this time, so it did not become a vacuum ball.

With the assistance of Xia and others, a vacuum ball soon appeared in the laboratory.

"Using a gel spraying device, this vacuum ball is sprayed with gel." Huang Haojie commanded.

"Okay." A researcher hurriedly used a gel spraying device to evenly spray the mixed gel on the vacuum ball.

Huang Haojie continued to instruct: "Carry out laser welding. ”

The researchers immediately laser welded the vacuum ball, and under the laser irradiation, the mixed gel quickly solidified.

After a while, the laser-welded mixed gel had been completely formed, and Huang Haojie waved his hand: "Stop the vacuum excitation, and then take out the magnetic vacuum film and wire." ”

The researchers had already done the relevant laboratory design, and quickly removed the magnetic vacuum film and wires from the gel ball.

The gel ball that lost the wire connection, because there was no fix, the gel ball quickly flew upward, fortunately there was a ceiling block, otherwise the gel ball would not know where to fly.

Obviously, Huang Haojie had anticipated this situation in advance, and welded four pull rings to the gel ball during welding.

The researcher hooked the pull ring, then pulled the gel ball down.

"Boss, I didn't expect it to be really possible." Summer said as she looked at the transparent gel vacuum ball in front of her that was shining with a faint blue color.

Huang Haojie touched the gel ball: "Test the strength, hardness and other conditions of the gel ball to see if there are any weaknesses." ”

"Okay." The researchers hurriedly took action.

Huang Haojie just wants to use a vacuum bag to replace the hydrogen airbag as the buoyancy of the airship, why can the vacuum provide buoyancy? In fact, buoyancy is caused by the difference in the density of matter.

At present, there is no gas in the world that is less dense than hydrogen.

Since there is no less dense gas, simply let the gas disappear altogether and replace hydrogen with a vacuum.

The density difference between air and hydrogen is 120, and the density difference between air and vacuum is 129, so that the buoyancy of vacuum is about 107.5% of hydrogen.

More than five hours later, the sun had set.

Summer ran over excitedly with a test report and said, "Boss, the test results of the gel ball are perfect and in line with the expected assumptions." ”

Taking the report, he flipped through it and put it aside, he was not surprised by this result, after all, the hybrid gel can be used as a spaceship repair material in the parallel space-time - interstellar era, and the strength and tightness must be able to resist the vacuum.

The test data in the report showed that the buoyancy of the gel ball did reach 107.5% of that of the hydrogen air bag.

If the gel vacuum ball is used instead of the hydrogen air bag, the overall buoyancy of the airship will be increased by about 7.5%.

This 7.5% buoyancy increase is crucial for those who need to raise the airship to near the Kármán line.

However, the gel vacuum ball is not without weaknesses, that is, once the height is fixed, it is difficult to adjust the height, and it may not be able to come down from the sky.

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Sogou