The military-industrial scientific research system of the academic master.

Just as Lin Chenggang's brain was working rapidly, trying to say something to save the situation, a voice from outside the car door saved the atmosphere that was almost unbearable.

"Engineer Liu, Researcher Lin, the data analysis team has come up with some new results!"

The voice sounded unfamiliar to Lin Chenggang, and it definitely wasn't from the three cars that had just picked him up.

Liu Xiyun, who was sitting further in, turned around with a look of astonishment:

"So fast?"

According to experience, this kind of work, which requires disassembling the missile body and conducting a full-process analysis of the test results, usually takes at least 5-7 days to complete.

This time, it took about fifty minutes...

"Well... the situation is a bit special."

The man held the tailgate of the car and stood outside to explain:

"I'm not a missile specialist, so you guys should go over and take a look..."

The space inside the command vehicle is quite cramped, with several crew members lined up vertically in a row. If you ignore the top hatch that requires pull-ups to pass through, you must leave the cabin in order from the outside to the inside.

Lin Chenggang and Liu Xiyun took a lot of effort to stand again under the scorching sun near noon.

The latter took the initiative to introduce the person who had been talking outside:

"This is Engineer Yu Zhefeng from the Electronics Technology Group. He was originally responsible for the radar equipment of the missile and artillery system..."

Originally, this kind of indirect work contact was just a matter of recognizing a familiar face, but the word "originally" from the other party still made Lin Chenggang a little curious.

But the situation on the missile side was obviously more urgent, so I didn't ask specifically.

However, Yu Zhefeng took the initiative to take over the conversation:

"Now I have to do a lot of chores, taking care of a little bit of everything..."

Lin Chenggang nodded in understanding.

This situation is not uncommon during model development.

If the development of a subsystem goes particularly smoothly and the progress is significantly faster than the overall progress, then the relevant personnel will often do some auxiliary work within their capabilities.

But Liu Xiyun explained:

"In fact, Yu Gong is currently in charge of the research and development and cooperation of various radar equipment for the Army's air defense system..."

"..."

Lin Chenggang was speechless for a moment.

Damn, someone else installed it this time.jpg

While greeting each other, they quickly arrived at an area surrounded by sandbags and earth walls a few hundred meters away.

Due to strict cost constraints and relatively harsh working environment, it is not uncommon for army firepower weapons to fail to explode or even ignite. Therefore, the Qingtongxia Shooting Range has set up such an area specifically to deal with similar situations.

Of course, specifically speaking today, the CT series propellants are insensitive fuels, which are relatively stable when not ignited, and the CTK series requires special electrodes to provide voltage for ignition, so it is very safe.

When the three men walked into the testing area, the unexploded bomb had been cut into pieces and placed on several tables according to different subsystems.

At first glance, Lin Chenggang saw the largest propulsion section——

A solid rocket engine is a relatively integrated structure that is difficult to disassemble into its pre-production state.

In addition, there were already a dozen technicians dressed in different clothes gathered around.

He walked forward quickly and briefly identified himself.

The other party did not lay too much groundwork, but simply turned the cylindrical power section around so that the circular cross-section was facing Lin Chenggang.

The latter had already seen the problem without the other party saying much.

"The pill column cracked?"

Lin Chenggang never expected that the reason that eventually led to the interruption of combustion was such a relatively simple reason.

There really is no need for any further analysis.

This is the most direct reason.

"Ah."

The leading technical officer with the rank of colonel replied:

"It's not very obvious from this point of view. We just used a probe to observe the internal structure in depth. The result is..."

As he spoke, he brought over a laptop computer with a photo on it that was a little overexposed due to uneven lighting.

But upon closer inspection, it can be recognized that this is an expanded image of the interior of a ring-shaped pill column.

In the center, there are three dark shadows that run across the entire image.

In other words, the entire medicine column was divided into four sections like cutting a baguette with a knife.

I can only say that it would be unfair not to turn off the engine.

"But that doesn't make sense..."

Looking at the hideous image in front of him, Lin Chenggang's face was full of confusion.

The matrix of the CTK-2 propellant is made by adding electrically sensitive hydroxylamine nitrate and metal tungsten powder to CT-1. In order to avoid strength risks in this rather special combination, he also specially added three-dimensional porous polyvinyl alcohol as a binder, and conducted many tests before the formal loading.

In theory, there should be no breakage due to physical reasons.

Moreover, the test of 0 target distance and 8km is not the highest for both combustion pressure and external overload. Even if there is a problem, it does not seem to be here.

So the root cause is probably the secondary power-up that I just discovered.

But what exactly is the connection between the two is still unknown.

Although he was working on solid rocket propulsion, he was not a chemistry major. It was feasible for him to be in charge of engineering research and development, but he was somewhat overwhelmed by the more in-depth aspects.

After a long silence, he put down his laptop and turned to look at Liu Xiyun who was following behind him:

"There should be some spare ammunition, right?"

The latter nodded:

"Eight more rounds."

"Can we do a set of repeated experiments this afternoon?"

Liu Xiyun thought for a moment:

"The afternoon schedule is to test the Haihongqi 10. If everything goes well, there should be time after dinner..."

……

What no one expected was that although the fault reappeared in the second round of tests that night, the problem occurred when hitting a target 15km away.

A missile failed to re-ignite at the end of its normal flight, suddenly lost power, and eventually missed its target.

Faced with this result, Lin Chenggang seemed to be in a dilemma.

On the one hand, this shows that his speculation about the root cause of the problem was correct, that is, during the secondary power-on process, some factor caused cracks to appear in the propellant grain, and eventually it stopped working abnormally.

But on the other hand, it also shows that the occurrence of this fault is quite random.

Although a 5/6 hit rate is not unacceptable on the surface, a technical risk that has not even been figured out cannot be ignored.

If a problem occurs during the primary ignition instead of the secondary ignition, the missile ejected from the cold launch tube will fall directly and hit the launch vehicle.

No matter how insensitive the propellant and warhead are, they cannot be safe under such circumstances.

Fortunately, this situation did not occur with the more traditional CT-1 propellant. Since the test began last week, a total of 39 missiles of various types have all hit the target, which made Lin Chenggang feel somewhat relieved.

"never mind……"

Looking at the characteristic data in the control system that was almost identical to that during the day, he sighed helplessly:

"All tests involving CTK-2 propellant are suspended. I will return to the capital first and try to find the problem as soon as possible..."

Faced with this clueless situation, Lin Chenggang had no choice but to give up his sense of mystery and submitted a report on his ideas about electronically controlled solid propellants and the situations encountered during the test to the management team of the hypersonic weapons project, hoping to get some support.

then……

"Comrade Lin Chenggang, I have good news and bad news."

In the office, Chang Haonan spoke to Lin Chenggang with a complicated expression.

Then, without waiting for the other party to make a choice, he continued:

"The good news is that the Torch Lab probably has some ideas for the problem you're facing. It's likely that there's a problem with the electrical sensitivity of a certain component in the propellant, and they should be able to come up with a specific conclusion in a relatively short time."

The latter looked happy, but then remembered that there was bad news:

"That……"

"The bad news is that because of changes in the development plan, our air-breathing hypersonic weapons... may no longer require a particularly powerful rocket booster."