"Black powder doesn't work very well."

Yu Ling looked at the killing radius of less than three meters in the test site and shook his head.

According to records, the guerrillas could use black powder to make grenades when they were engaged in combat, and she thought that this would save costs and quickly expand production.

But judging by the current situation, the power of such a grenade is too small to be suitable for the troops.

"Mix 20 percent aluminum powder with RDX explosives, and I'll see how it works."

Black aluminum explosives, the shell charge of the Type 99 main battle tank, although the detailed ratio coefficient is not clear, but if you know the composition, the coefficient or something, you can still test it.

In the distance, the experimenter pulled the fuse of the grenade and quickly ducked into the bunker dug nearby.

This is no joke, it really kills!

After six seconds of waiting, the target had once again fulfilled its mission.

The explosion lifted some dirt into the sky, and then there was a dazzling light for a moment, it was a thermite reaction, more than forty meters away, Yuling also seemed to feel its high temperature, and after about a second or so, the calm near the target was restored.

"Is the radius of destruction around seven meters? The explosion effect is quite good, but it is a bit too good for the infantry, and the heat of several thousand degrees is still used against the tank. ”

Yu Ling recorded the data this time, and then realized that he was a little clever, the reloading charge of the tank gun was of course designed for the tank, and the more high-end explosives containing aluminum explosives were still not used for the infantry.

"With a pure blunt RDX charge, try again."

She continued to start the next experiment with a blank face, and in the field of research, failure is a common thing, and if it affects her emotions, she is not worthy of being a researcher.

"The radius of destruction is nine meters. Very good, with a charge of 105 grams, can you actually achieve this effect? ”

This explosion did not have the dazzling white light before, just the fire of a normal explosion, but this time the damage to the target was the best one, worthy of being called the strongest whirlwind before the nuclear bomb.

"However, the fuse is a bit longer, the explosion time has reached six seconds, and if it is shorter, three or four seconds should be about the same."

The experimental grenade was made according to the 1918 model, so the shortcomings of the 1918 model were completely retained - the delay was too long, reaching six to eight seconds...... If you have this time, the enemy can pick up the grenade and throw it back like in the movie and TV show.

So, this is something that has to be changed......

"You guys are responsible for changing the fuse, and hopefully you'll see results within four days."

The originality of these half-people is not strong in the first place, and even more so after Yu Ling has come up with ideas for everything.

But this kind of basic research should still not be a problem.

"For large-scale production, I think it is better to consider TNT, after all, the consumption in the future is astronomical, and the current industrial production of urotropine can only reach more than 5,000 tons a year." Clea interjected.

The reason why TNT is used on a large scale is that it is cheap, and if it is to be manufactured on a large scale, Yuling must consider the cost problem.

The cost of RDX is much simpler than that of TNT, but the cost is much higher.

"It's okay, just continue to increase the scale of industrial production, and if you want to restart the industrial production of TNT now, you need to invest more."

After large-scale industrialization, RDX has almost replaced TNT in the military field, and Yuling does not want to produce TNT, an obsolete explosive, for the time being.

Even if it was needed for blasting projects in the future, she wanted to wait until the time came.

"Director, who are you talking to?"

The researcher on the side seemed to notice Yu Ling's self-talk, and asked.

"No, it's just a proofreading of the results."

Yu Ling naturally covered up the past, and although the reason was very lame, the researcher didn't ask any more questions.

Every time she talks to Claya, it's easy to forget that there are people around her, and many times there is a risk of exposure, and Rain Spirit feels like a person playing with his phone in the dark, and he could hit a street lamp at any time.

However, Claya enjoyed it very much, and she really couldn't understand it.

"In the past three months, how have you been researching the dual-base propellant?"

The main task of the Pharmaceutical Research Institute these days is this, for no other reason, mainly because a single base propellant is not enough to support the long-distance launch of mortar shells, so three months ago, Yu Ling gave this highest priority research task.

"The final confirmatory experiments have been completed, and the fourth research group has followed your prompts and started working on the three-base propellant."

It's not too fast, after all, Yu Ling left quite enough information for them to study, three months is indeed not fast, but it is still passable.

"Then mortar shells should also start to be made......"

"Nothing...... How long does it take for this propellant to be applied to the supplied ammunition? ”

The researcher was looking at her more and more strangely, probably because she would always say something inexplicable.

Sure enough, I still need to change the topic a little......

"When the results of the experiments in this area come out, we can carry out industrial production."

"Okay, I see, let's get back to work."

The grenade matter is solved, and there is no need to stay here at the Pharmaceutical Research Institute, and there is still a large number of things to deal with today.

"What did you just want to say?"

Just now, Claya said that there is indeed nothing wrong with it, the current production of urotropine is too low, and the RDX produced by 5,000 tons of urotropine will not be greater than 2,000 tons, but it is still possible to supply troops below 700,000.

"You are super-British to catch up with the United States, even the United States, during World War II, most of the TNT was used, and it was directly mass-produced RDX, you ......"

Clea didn't know where to start, after all, it was okay to look at Yu Ling's thoughts, but she always felt that something was wrong......

Why should a small warlord in a backward region suddenly surpass Britain and catch up with the United States! Where does this make the faces of those old countries rest!

"It's true that TNT has a wide range of applicability, but we are now pursuing lethality very utilitarianly, and the rest, don't worry about it for the time being, anyway, the safety of passivated RDX is only one coefficient worse than TNT, and there should be no problem with the storage mode of the German army."