The military-industrial scientific research system of the academic master

Chapter 1290 CT-1 High Energy Hybrid Propellant

Even with the help of ultra-high-speed wind tunnels, the process of accumulating data is still boring and long—

As the top masterpiece in the field of human aerodynamics, JF14 may feel fresh when you first come into contact with it.

But Chang Haonan had already operated the more advanced JF22 wind tunnel in his previous life. Xiao Tiantian in the eyes of others was Mrs. Niu from the beginning, not to mention that the situation inside the ultra-high-speed wind tunnel could not be visually seen, so the whole The operation process is almost repeating the same process infinitely...

In comparison, the development process of rocket boosters is smoother.

Although the paraffin-based solid-liquid hybrid propellant is a brand-new attempt that Lin Chenggang has never encountered before, this kind of thing is always changing.

What's more, the system that meets Chang Haonan's requirements is in a solid state when not working. Most of the physical and chemical properties and performance requirements can still be based on the past experience of the power department of the third hospital. It is not completely built from scratch.

Therefore, after returning to the unit with the information given by Chang Haonan, Lin Chenggang only spent about half a month to produce some useful results...

…

Beijing, Third Academy of Aerospace Science and Industry.

"Old Shen, I have a new set of samples here. Please test the combustion energy, retreat rate and combustion process for me, especially the optical conditions of the ignition process."

Lin Chenggang walked into the testing center, carefully placed a sample box on the table, and said to Shen Ruiqi, the director of the testing center who was busy in front of the experimental table.

After a slight pause, he added:

"You have to jump in line to do it."

After hearing these four words, Shen Ruiqi, who had no reaction at all, finally raised her head and glanced at Lin Chenggang.

Or to be precise, he glanced at what Lin Chenggang put on the table.

The transparent plastic box is divided into dozens of small grids, each containing a sample.

Obviously, this is no small task.

He sighed and said in a helpless tone:

"Jumping in line, jumping in line...Everyone said that their own project is the most urgent, but I only have a few sets of equipment here. There must be a first-come, first-served..."

Although he was grumbling, his movements were not slow. He quickly pulled out a pair of rubber gloves from the side and put them on his hands.

If someone else's project is anxious, that's just talk.

And Lin Chenggang's project really has the highest priority.

Leaders of ministries and commissions, group leaders, and academy leaders have all emphasized that all resources must be concentrated to ensure the progress of research related to hypersonic weapons.

If work is delayed, the responsibility falls directly on the individual.

No one can touch this bad luck.

As an old employee of the Third Hospital, Lin Chenggang also knew Director Shen’s temper and said half-jokingly:

"After this project is completed, I will definitely treat you, Lao Shen, and the comrades in your testing center to dinner at the Capital Hotel at my own expense."

Due to its extensive business and impressive export results, the remuneration offered by the three institutes is above average compared to its peers.

But even so, if you have to spend your own money to treat more than a dozen people to a restaurant in Beijing, you will definitely lose money in your wallet.

Shen Ruiqi happened to be opposite Lin Chenggang at this moment. After hearing this promise, she couldn't help but rolled her eyes:

"When your project is completed... I'm afraid it won't be until ten or eight years later. Will I still be able to wait for this meal before I retire?"

He is not a member of the hypersonic missile research and development team, but after all, the entire three academies are involved in a lot of work, so he has heard about this project to some extent.

In fact, the fastest air-breathing powered aircraft that China has mass-produced before is the J-8C with a maximum speed of Mach 2.4.

Subsequent developments, including a series of domestically produced subfired ramjet-powered cruise missiles, have failed to break through this number.

And this step actually requires a direct leap to the level of Mach 9-10.

It's exciting, but if you think about it, you'll know how difficult it is.

Lin Chenggang didn't think so much just now, but now he came to his senses after hearing Shen Ruiqi's words.

Just in the opposite direction.

He has seen Mr. Chang's level with his own eyes. If the current pace continues, he may have to fulfill this promise in a few years.

But the words have already been said, and it’s not easy to take them back, so I have to say haha:

"It's okay. Even if you retire, you won't miss the treat... Besides, with your qualifications, Lao Shen, you will definitely be rehired after you retire."

The two of them kept talking back and forth, but the work at hand was not delayed at all.

Shen Ruiqi had already called two young testers from behind, and at the same time pulled a form from the side and handed it to them:

"Remember to fill out the form... Can I just use the flat flame burner directly?"

"right."

Lin Chenggang said while immersed in filling out the form:

"Currently, we are only conducting a preliminary test of this system to verify the basic performance and usability of the proportioning plan..." This answer made Shen Ruiqi stunned:

"New system?"

As he spoke, he picked up the sample box with both hands, put it close and looked at it carefully for a moment:

"It seems that I have never seen it before... Why is the solid propellant still in the form of a paste?"

They were all from the same unit, and they originally needed analysis and testing, so there was no need for Lin Chenggang to hide it:

"A portion of lithium aluminum hydride and styrene-based thermoplastic elastomer are added to the paraffin matrix, as well as ammonium perchlorate and..."

Only halfway through speaking, Shen Ruiqi was so frightened that she trembled and almost threw the box in her hand:

"You just brought me here?"

Due to excessive shock and fear, even his voice was distorted.

Extremely active strong reducing agents and strong oxidizing agents are mixed together, and even a slight touch of static electricity can trigger a violent reaction.

Even if the propellant is not explosive and may not blow up the entire test center, there is a high probability that the two closest people will not be able to escape.

“Each component and the entire system is passivated and meets regulatory requirements…”

As he spoke, Lin Chenggang filled in the last item on the form and signed his name at the bottom coolly:

This work is compiled and uploaded by Liujiu Book Bar~~

"I'm not a novice, I won't joke about safety issues."

Shen Ruiqi breathed a sigh of relief, but still handed the box and the test form to the young assistant behind him with extra care:

"Everyone who drowns is someone who knows how to use water. There is nothing wrong with being more careful..."

…

The several basic performance tests requested by Lin Chenggang were not complicated and were basically part of the daily work of the power department, so Shen Ruiqi did not have to do it himself.

All on-duty personnel in the testing center were dispatched and worked continuously for two days and two nights. Finally, on the afternoon of the third day, all 48 sets of samples were tested.

When Shen Ruiqi found Lin Chenggang again, he looked so haggard that he seemed ten years older than a few days ago.

However, the spirit seemed extremely excited:

"Old Lin, your new system is simply amazing..."

He slapped a thick test report on Lin Chenggang's desk and paced back and forth in the office excitedly:

"The regression rate of twelve groups of coarse-crystalline paraffin samples increased by 157% to 216% compared to HTPB, and the other twelve groups of microcrystalline paraffin samples also increased by 78% to 174%, and among them, the group with the fastest recession rate , the total released energy can reach a level of more than 6200J/g..."

"As long as you nod, I will immediately send the results to the Sixth Academy. I think they will be able to see straight through their eyes..."

"After all these years, we finally have a turnaround..."

"By the way, does this new system have a name?"

“…”

There are thousands of numbers in the entire report. Lin Chenggang is not a computer, so it is naturally impossible to remember all the results.

But these most critical ones are enough.

The biggest problem with traditional solid propellants is that the fuel retreat rate is insufficient.

The slightly strange new system in front of us almost perfectly solves this biggest pain point.

And it does not lag far behind common systems such as HTPB in terms of safety and storage durability.

Compared with the retreat rate of about three times, it is a completely acceptable price.

Lin Chenggang had already expected this result, so he just looked at the ecstatic Shen Ruiqi with a calm expression:

"Ahem - Strictly speaking, this should be regarded as the system first proposed by Academician Chang of the Aerospace Power Group. I just implemented it using existing resources..."

The latter's footsteps stopped suddenly, his face full of surprise.

Before Shen Ruiqi could speak again, Lin Chenggang continued:

"It is initially named CT (Super-Propulsion) series propellant, and the first application model should be called CT-1."

"In addition, there is no need to notify the Sixth Academy for the time being... Although Academician Chang will not have any opinions, it can be determined that the creep property of paraffin-based chemical columns is not very good, especially when the temperature is relatively high. The overall structure that can only rely on the wall to support the grain column is difficult to use for ultra-large solid rocket motors with a diameter of more than 850mm. "

Hearing this result, Shen Ruiqi couldn't help but show a somewhat regretful expression.

The Sixth Institute is currently mainly catching big guys with a volume of more than 1 meter. If the situation of this CT series propellant is as Lin Chenggang said, it will not be of much help to them, and their joy will probably be in vain.

However, the feeling of regret only lasted for a moment.

"If it is suitable for small-sized solid motors, there is really a suitable project at the moment, which can be used to verify it for you..."

(End of chapter)