Chapter 921 Ask in Person
"Not only is it powerful, but it also has a high density. Its impact sensitivity is lower than that of RDX and HMX, and its friction sensitivity is similar to that of HMX. Its thermal stability is 5s and its explosion point is 323 degrees Celsius, which is much more stable than RDX and almost the same as HMX, just slightly worse than TNT. Its melting point is 110 degrees Celsius, which is slightly higher than boiling water. It is easy to melt, but it will not melt under normal conditions... This is naturally the best explosive! This thing looks incredible, and it can even..."

At this point, the comrades working on missiles felt a little uneasy and turned their heads away doubtfully.

"Leader, is this thing really reliable? It's not that I don't trust my comrades, but the gap is really a bit too big. I feel..."

It's no wonder he was confused. RDX is already a high-energy explosive, and HMX, which is higher than RDX, has gone a step further and is almost the most powerful stable explosive currently available.

Now, I suddenly find that I have a new type of explosive with better performance than HMX, and its convenience of use and environmental requirements are lower than HMX. It is normal to feel a little uneasy.

There are only some simple parameters listed above, but the synthesis process and route have been removed, so it is unclear whether it is feasible.

Hearing his words, the leader of the Defense Work Committee laughed and said, "Well, you don't have to worry about this problem. Although this thing is still just a theoretical design, its technical source, reliability and feasibility are very high."

"Theoretical design? In other words, the explosive called DNTF doesn't exist yet? Then how were these parameters derived?" The comrade who was working on missiles became a little anxious. This sounded unreliable.

"That's probably what the proposer of the technology calculated. But let me reiterate, you don't have to worry about the reliability of the source of the technology. Do you remember where your UDMH fuel combination and the synthesis process of UDMH came from?"

The leaders of the Defense Work Committee were not in a hurry at all. Anyone would be confused about this matter, but since it came from Gao Zhendong, there was no need to be confused. It didn't matter whether they were confused or not. Just tell me whether you believe it or not and whether you want to use it or not.

DNTF is a high energy density compound. The full name sounds confusing and there is a possibility of leakage, so the material only has the abbreviation DNTF and no full name.

3-Di(nitrofurazanyl)furazan oxide.

In Gao Zhendong's previous life, this thing was not as famous as the famous CL-20 (a kind of all-nitrogen anion salt) explosive, but in fact, this thing is of the same level as CL-20. Looking at its structural formula, you can see that it also contains almost only nitrogen except for oxygen.

As we all know, nitrogen has a good temper, but the nitrogen in compounds generally has a bad temper, and the larger the amount, the worse it is.

Moreover, the synthetic raw materials are easy to obtain, the synthetic steps are simple, it can be completed in 4 steps, and the yield is not too low.

The most crazy thing is that the synthesis steps and basic technology of this thing were actually public on the Internet in Gao Zhendong’s previous life.

Coincidentally, Gao Zhendong knew that there was a type of solid propellant that used this thing. Isn't that a coincidence?

After hearing what the Defense Work Committee leader said, the comrades working on the missiles were relieved almost immediately. So that's where it was? That's all right. It seems very feasible.

They now all remember the feeling of "after many twists and turns, there seems to be no way out, but suddenly there is a new village" that the UDMH/N2O4 fuel combination brought them, as well as the extremely high maturity and availability of the UDMH synthesis process proposed by the other party.

It is a very happy thing to have such a comrade to help outside.

Although he had no idea who this or this group of comrades with whom he had long been friends were or where they were, that was not important.

What’s important is that we all work together towards a common goal.

"Oh, then I understand. Hahaha." The comrade who was working on missiles happily opened the second copy.

Still just some parameters, but nothing about the synthesis route.

There is still only one abbreviation, B-GAP, and there are more physical and chemical properties involved. However, this comrade who is working on missiles is not an engine expert, let alone a propellant expert, so he does not understand many of them. But at least there are a few things he can understand.

B-GAP is actually the abbreviation of branched polyazide glycidyl ether. As the name suggests, it is nitrogen again, an energetic explosive adhesive with high density, high energy content and good mechanical properties.

"…the explosives with B-GAP as energetic binder have a unit heat of explosion increased by more than 1400 kJ/kg compared with the explosives with the same formula but inert binder…"

The benefit can be seen from this one point alone, and there is no need to say more about the others. Higher explosive heat means higher energy. A unit explosive heat of 1400kJ is no joke. For example, the explosive heat of TNT is 4400kJ/kg.

"…low glass transition temperature and low sensitivity…"

Low sensitivity means that the environmental conditions required during processing are low, and the difficulty and danger of processing and use are reduced.

Don't underestimate this little change. The Nobel Prize was created by reducing the dangers of storage, transportation and use of nitroglycerin explosives. Otherwise, Nobel would not have made a fortune, and naturally there would be no Nobel Prize.

Thinking of this, the comrades who were working on missiles felt that this matter suddenly became grand and impressive.

The rest of the things were much simpler, just as natural and logical as a little boy with firecrackers in his hands and cow dung in front of him.

What are you doing? Use B-GAP to stick DNTF and other explosive components!

The third document that the missile developers saw was just like this. It was not just these two things, but also something else. This thing called GAP super-high energy propellant contained nothing else but B-GAP, RDX, and DNTF.

Thanks to the excellent mechanical properties of B-GAP, the content of B-GAP in the propellant is only 10%, which is a remarkable result.

In fact, Gao Zhendong directly skipped NEPE propellant, which is also an energetic binder, and went straight to GAP propellant. The reason for this has little to do with its advanced nature. In fact, it mainly depends on two reasons.

First, the information he had read in his previous life was GAP, but he had not read NEPE systematically because it was not new enough. He had not read it, so the system could not be generated.

Second, the formula of GAP propellant is actually simpler than that of NEPE, and it may not even require a plasticizer.

As for specific impulse, NEPE and GAP are at the same level. GAP is only better in mechanics, physics, chemistry and potential, but the specific impulse is at least 25% higher than that of HTPB propellant.

With this comparison, for Gao Zhendong, he would be a fool not to do GAP.

In fact, this is the same reason why he did not use CL-20 but DNTF. The two are at the same level, but he does not have CL-20 but has DNTF.

For comrades who work on missiles, this GAP propellant does not need any other reason, just one thing can make their eyes go straight.

Compare the rush!

The specific impulse is at least 2500Ns/kg, which makes anyone who works on missiles unable to stop.

You have to know that before this, the highest specific impulse of solid propellant they could see was no more than 1800Ns/kg, and the highest specific impulse of practical inert binder propellant was about 2100Ns/kg of HTPB, and it could not go any higher. Of course, theoretically it could be higher, or by adding some aluminum, ammonium perchlorate or the like.

The GAP propellant that Gao Zhendong took out was undoubtedly amazing to those comrades who had never even seen HTPB propellant.

If we don’t use this thing, we will be letting down the two emperors Yan and Huang, our ancestors, and countless revolutionary martyrs!

The improvement of specific impulse on range is not a linear one, but an exponential one. Moreover, the improvement effect is more obvious for missiles with longer range. Intercontinental missiles benefit more from it than medium-range missiles.

Roughly estimated, this is a 1800% increase in specific impulse from 2500Ns/kg to 38Ns/kg. The same weight of propellant can bring about an 80% increase in range.

And the density of this propellant is too high! It can reduce the volume a little bit at the same weight.

Which comrade working on missiles can withstand the test of this kind of propellant?

What about not being able to use a solid rocket engine, what about the range being too far and not being able to hit the target accurately, just go to hell with it!

We must use this propellant!
Seeing the increasingly excited expressions of the comrades working on the missiles, the leader of the Defense Work Committee said with a smile: "How is it? Do you feel a little more confident now? Hahahaha."

"Yes! Yes! We have to make this thing no matter what. I just don't believe it. If this is true, can't we make a good missile?"

As long as the range is solved, as for the accuracy... I have said it before, it doesn’t matter if it’s almost there.

"Are we still working on the liquid ones?" a comrade asked.

This question really stumped everyone.

Let’s not do it. What if the solid progress is slow?
Let's do it, seems a bit wasteful?
The chief engineer of the Defense Work Committee laughed and said, "Well, I have made some preparations. We have invited the solid propellant researcher to come over. He is waiting for a call in another conference room. According to the regulations, you cannot meet in person, but it is no problem to make a phone call and communicate in person."

With the experience of a similar meeting a few months ago, he is now smart. This matter is closely related to Gao Zhendong, so I will invite Gao Zhendong over and wait.

The comrades working on missiles were overjoyed when they heard this. They decided to go and ask in person what the expected progress was.

At this time, Gao Zhendong was waiting in another conference room. When the phone call came and he heard the question from the missile comrade, Gao Zhendong smiled and said, "The speed of this solid propellant should not be slow. Although the reactants, additives, catalysts, reaction conditions, and reaction processes of each step are not very detailed, they only lack some detailed conditions and need to be confirmed and optimized through experiments. However, I am confident in this synthesis route and there will be no problems."

What problem could there be? This was originally a paper from the previous life and the content is very detailed.

"As for whether to study solids and liquids at the same time, my personal suggestion is to walk on two legs and study both solids and liquids."

"Ah? Isn't the cost too high?" The whole audience was in an uproar. Even the leaders of the Defense Work Committee could not stand it. This kid is really greedy when he is greedy.

(End of this chapter)