"There is no need to worry about radiation in space when using the environment. The third-generation nuclear bomb technology can also add an additional layer of lithium cladding to absorb neutrons, or use beryllium metal to bounce the neutrons outside the nozzle."

Wei Hong organized the following language: "The temperature problems caused by explosions can also be avoided. There are three ways of heat transmission: heat conduction, thermal convection and thermal radiation. As long as the high-temperature medium is not allowed to touch the material, the temperature cannot affect the material."

"You mean, magnetic field?"

Lu Yi vaguely guessed how Wei Hong wanted to avoid the thermal shock of the nuclear bomb explosion.

“Yes, magnetic field.”

Wei Hong nodded confidently and said, "We can wrap a thick layer of solid helium on the periphery of this nuclear bomb to isolate the light and thermal radiation generated by the explosion. This absorption and isolation process will instantly increase the temperature of solid helium and change from solid to plasma in an instant.

Gases in plasma can be bound by magnetic fields, just like plasma in nuclear fusion reactors.

As long as our magnetic field strength is sufficient, we can separate the ultra-high temperature of plasma gas and resist the shock wave. We can obtain greater thrust and acceleration with the help of explosion shock wave and solid helium heating expansion pressure.

This is the data model I roughly deduced based on this idea just now. It is not perfect, but it is feasible to roughly determine this idea..."

"Wait, don't show it to me first, please let me slowly..."

Lu Yi felt a headache when he looked at the digital model handed over by Wei Hong. The potential of 96.8 is so crazy. If it is 98 or even 99, wouldn’t it be a brain-breaking breakthrough in the sky?

What’s even more terrifying is that ordinary people’s brains are called brains. Just think about it. However, these madmen can build a mathematical model from various existing conditions based on their brains and use data to accurately tell you...Believe me! No problem!

People can lie, but mathematics can't lie.

I used it very well before, but why did it feel so bad when someone held a digital model and proved that his horror idea was OK?

"Show me your data."

After nearly a minute of slowing down, Lu Yi took Wei Honggang to build a model in less than two hours. It can be seen that he is not as good as Professor Lin in playing mathematics, but thinking about the other party's main business is to study engines, it feels terrifying.

After reading for more than ten minutes, Lu Yi handed over the notebook to Wei Hong and said, "There are still many incomplete data, and at the same time, there is no data on the magnetic field that resists plasma impact. Are you sure there is no problem?"

"I can complete the incomplete data in the past two days. Judging from the data shown now, this idea is fine. I need the magnetic field constraint data of the nuclear fusion reactor to calculate it, so I didn't write it."

Wei Hong explained these two problems, and then seemed to be afraid that Lu Yi was not a researcher of the aerospace engine and did not understand the Orion engine well enough. He took a pen and roughly drew a structure diagram of the rocket engine on paper, explaining:

"General Engineer Lu, the barriers of aerospace engines are not propulsion fuel, but material!

There are only two directions to increase the thrust of the engine. Either increase the work fluid injection volume or increase the working fluid injection speed.

To increase the amount of working fluid injection, that is, to increase the combustion output of the propellant per unit time, which is a huge cost burden on the propellant, and the weight of the propellant itself will also become an obstacle.

The cabin of the rocket engine is like an hourglass, with a combustion chamber above it. The combustion high-temperature working fluid is sprayed downward, and the lower the cabin space, the smaller the space, and the injection speed is getting faster and faster.

When passing through the neck of the nozzle, the cabin space begins to expand again. The injection working fluid, which has not been completely burned at high temperature and high pressure, expands in the enlarged cabin space, and the expansion pressure acts on the inner wall of the nozzle to form thrust.

In the case of equal fuel, if you want to increase the engine thrust, you must increase the injection speed and the expansion pressure. The higher the pressure, the faster the injection speed, the higher the temperature, and the greater the expansion pressure.

This pressure and temperature are given by the combustion chamber, so this involves a problem, that is, the upper limit of the material is that the expansion pressure under the inner wall of the nozzle reaches the upper limit, but the pressure of the rocket engine supercharged combustion chamber reaches the upper limit.

The pressure and temperature of the combustion chamber of the modern rocket engine have reached the limit of the existing materials and cannot be increased any further. Unless the material breaks through, you can only work hard on the design. However, the design and structure of the rocket engine is so simple, and there is not much room for optimization in this regard."

"This is the bottleneck of our current rocket aerospace engine and the bottleneck of materials, but my previous two plans are different.

The first is to use the thermal expansion effect of the propelling working fluid to use the ultra-high temperature exhaust gas and heat flow of the nuclear fusion reactor to promote the expansion pressure generated by heating.

Because the boost combustion process is reduced, the expansion work is performed directly, and the bell-shaped or conical nozzles below also change from small to large, rather than from large to small Laval nozzle structure, the material pressure and working fluid consumption are much lower.

The second way, we use the energy of the explosion of the ultra-small nuclear bomb to heat solid gas, instantly heat the solid gas to the plasma state, and use the magnetic field to bind and block the plasma to avoid the material's tolerance limit, and convert the impact force of the nuclear bomb explosion and the expansion pressure of the gas into thrust.

Of course, the second solution is not very energy efficient because it requires building a high-intensity magnetic field, but I think energy efficiency is not a problem under the premise of having a nuclear fusion reactor."

After watching Wei Hong analyze the bottlenecks of the current aerospace engine and the advantages of these two engines in detail with data, Lu Yi was also a little silent.

As a scientist, he also has a deep understanding of the sentence that the upper limit of materials determines the upper limit of technology, but materials cannot be broken through in a short time, so he began to abandon the rocket engine and wanted to seek a breakthrough in ion engines.

The design ideas of the two aerospace engines proposed by Wei Hong are indeed perfectly utilizing the advantages of nuclear fusion reactors, and at the same time avoiding the current material bottleneck. The thermal expansion engine is better, but the Orion engine...

"Combining the two engines, since magnetic field constraints can be applied to Orion engines, it is no problem to increase power on thermal expansion engines."

After thinking for a while, Lu Yi finally failed to resist the amazing prospects and temptation of the Orion engine. He agreed with Wei Hong's idea, but also proposed his own ideas for improvement.

The magnetic field constrained isolation solution can be applied to Orion engines, and it is no problem to apply to thermal expansion engines. The ultra-high temperature exhaust gas from the fusion reactor is enough to heat the propellant to the plasma state.

"No problem, but I need the performance parameters of superconducting materials and the magnetic constraint data of nuclear fusion reactors." After hearing Lu Yi finally agreed, Wei Hong looked a little excited and quickly made his request.

"I will give you relevant data and specific superconducting materials tomorrow."

Lu Yi glanced at Wei Hong who was excited and said seriously: "First conquer the thermal expansion engine, don't make any noise about the remaining Orion engines. First, improve the relevant data model and structural parameters, and I will find a way to find a way for the small hydrogen bomb."

The small hydrogen bomb is the only trouble for the Orion engine, and it is also a big trouble.

Unlike atomic fission bombs, the engineering drawings and manufacturing methods of the atomic bombs can be found even on Baidu. With enough high-purity uranium 235 and simple equipment and tools, you can just find a student majoring in nuclear physics to create it.

But the top secrets of hydrogen bombs? The structure data of the top secrets is only in the hands of a few bigwigs of the Chinese Academy of Sciences in China. Even with Lu Yi's current status, he still doesn't understand it, and it's even more inconvenient to inquire.

Although this Orion engine can also use atomic fission bombs, as an interstellar aerospace engine, it is an important indicator to obtain fuel easily and quickly.

Whether in the universe or on the earth, fission elements are much less than fusion elements. If the problem of small hydrogen bombs cannot be solved, this solution will only be stranded.
Chapter completed!