A week later, a strangely shaped vehicle slowly drove into the test site.

It is the first tracked tractor manufactured and assembled by the Ministry of Industry of Neverwinter according to a full set of drawings and technical guidance provided by the Ash Pot Design Bureau. It's just that in addition to the same chassis, its appearance has been compared with the test product. The vehicle was surrounded by thick armor plates on all sides, and at first glance it looked like a moving box.

After driving into the blast area, it stopped in front of the melted tower for about half an hour, then turned around and headed south along the same road.

After driving about five kilometers, a wheeled truck approached and picked up all the people on board, while the square box tractor was abandoned directly in the snow.

The group traveled all the way, and the next day they returned to Neverwinter from the Great Snow Mountain.

And Roland, who got the news, summoned them into the castle as soon as possible.

"Well, there were no accidents, did you?"

"Rest assured, Your Majesty, everything is going well. Phyllis smiled as she presented a sigil to him, "Asha quickly settled on the scene, and we stayed longer than expected. ”

"Because, because there is a specific point in time, this is not too difficult," Ah Xia said a little shyly, "Compared to the other sisters, my control over my abilities is poor......

"Alright, don't be modest. ”

"Yes, it's true......"

Roland took the sigil, but his expression was still serious. He turned his head to look at Momo beside him, "I'm sorry for you." ”

"No, you are serious, Your Majesty. Momo stretched out his hand to cover one side of his eyes so as not to see His Majesty the King, and at the same time exerted his power. After a moment, she lowered her hand and bowed to Roland, "Everyone's numbers and colors have not changed significantly, and they are basically the same as when they set off. ”

It was only then that Roland breathed a sigh of relief and said with a smile, "Thank you for your hard work. ”

"You too. The witches replied in unison.

"The parlor has prepared a meal, and the chaos drink is available in unlimited quantities, so let's fill our stomachs first. Looking at the delighted crowd, he smiled and shook his head. As for the Tachira Witches who participated in the action, they were basically regulars in the dream world, and there was no need to give any additional rewards.

Using Axia's backtracking ability to observe the instantaneous changes of weapons when they are in action at close range has always been the most relied upon improvement method by the engineering department. By adjusting the backtracking speed, you can clearly understand the status change trend of the target at each moment, and most of the problems and mistakes can be seen at a glance.

However, as mentioned earlier, Sunlight is different from other weapons, especially a dirty bomb that has an incomplete response. There will be a lot of materials that emit lethal radiation left on the site, and if you rush into it, you will undoubtedly be damaged by a huge amount of radiation.

To this end, Roland did not hesitate to put the first crawler tractor prototype into it, and converted it into a radiation-proof vehicle - its left and right rear sides and floor were wrapped with multiple layers of lead plates, sandwiched with gold leaf and beryllium sheets, and the overall thickness was as high as ten centimeters, making it highly shielding against photons, electrons and neutron jets. And the structural weight brought by comprehensive protection can only be carried by a steam engine powered by the Rubik's cube.

In addition, the interior of the vehicle is almost completely isolated from the outside world, avoiding the risk of radioactive dust entering the vehicle through the ventilation tunnel. In order to observe the scene of the explosion, a large piece of leaded glass was installed in front of the hull, and the thickness reached an astonishing 30 centimeters.

Considering that entering and exiting the test site could cause contamination on the tracks and armor, he also specifically requested that as soon as the personnel were sent out of the most dangerous core area, the vehicle should be replaced immediately, and the former should be abandoned directly in the snow.

It can be said that Roland has used all the security measures he can think of, but even so, he still has difficulty putting his mind at ease.

Fortunately, the final results showed that the observation operation was a complete success.

After getting the first-hand information on the scene, Roland immediately started research with Anna and Selene.

......

Using the time sigil to repeatedly play back the scene that was slowed down hundreds of times at the time, the flaws of the No. 1 principle device gradually surfaced.

"Our explosives are so poor. Anna whispered.

"I can also see that the impact of the explosion doesn't seem to be smoothly transmitted to the 'chamber,'" Selene nodded her beard, "Can you improve this problem by detonating in batches?"

"I'm afraid there's not much hope in the short term. Roland rubbed his sour eyes, and after watching the explosion for two days in a row, he felt that the whole world was only blue and white.

Although the problem with explosives had been expected for a long time, he did not expect it to be so obvious.

Neverwinter has been mass-producing dual-base smokeless gunpowder, which is not as powerful as high explosives such as Black Soy in terms of energy and detonation, but it is enough for the army. Even if the power is insufficient, it can be compensated for by quantity. But when you put it in the principle device, the trouble is revealed.

More than 1,000 kilograms of explosives were by no means a point on the blueprint, they were stacked up the size of a safe, and in order to transmit the explosive energy to the uranium block, Roland also made a lens similar to a funnel, hoping to gather the impact force as much as possible.

There was nothing wrong with this idea, but the detonation had already occurred before this step, because the total volume of the pack was too large, and each point was detonated at the same time, so that the shock waves generated by the front and rear explosives canceled each other out a lot—this can be clearly seen from the slow retracement, the shock waves that hit each other caused the entire steel lens and even the shell to be violently deformed, which meant that a large amount of energy was acting outside the 'chamber', and the energy to push the uranium block was naturally much less.

What follows is the chain reaction.

The lack of pressure in the chamber caused the fission to be quickly halted, and most of the uranium was vaporized at high temperatures, which also weakened the effect of the neutron source in disguise.

"I have to find a way to do it in other ways. Roland said. Without electronic explosion control technology, it would be almost impossible to fire all the explosives in sequence within a thousandth of a second, making it almost impossible to overlap the front and rear shock waves. Even if it is replaced with high explosives, it will only improve the problem and not eradicate it.

He can ask the Ministry of Chemical Industry to try to study low-velocity explosives and place them in front of the lens to minimize the interaction between explosives, but this process may require a lot of experiments to prepare, and whether it will be successful remains to be seen. Nowadays, the most reliable way is obviously to make up for the lack of detonation technology through configuration design.

"Looks like we're going to have to work overtime again tonight. He stretched and said weakly.

"I'll be with you. Anna laughed, "How about a reward for a Black Fire massage?"

"Suddenly I felt full of energy," Roland perked up, "Is there any other reward?"

"Like what?"

"Let me think about it...... By the way, how about the one I mentioned last time......"

Is this what I learned from the dream world......

Selene covered her slightly hot face with her main beard and quietly left the North Slope Lab.