Into Unscientific

After more than three hours.

Rumble——

A U2 reconnaissance plane roared and flew over the base without any intention of hiding its existence.

And on the ground.

Factory 221 is still the same as usual, and has made various preparations before the reconnaissance plane flies:

In the living area, the bedding is dried,

The warehouse has lined up a convoy of goods,

Thick black smoke billowed from the chimneys in the production area.

If you look further away.

It can also be seen that several J-5 fighter jets tried to encircle and suppress U2, but were stretched by U2's light height difference, and gave up intercepting helplessly.

Everything seems to be a replica of last time.

This moment.

Fifth Master Qian also stood silently by the window just like Zhou Shaoping who was hiding in the hidden building back then.

His eyes stared motionlessly at U2 above his head.

See this situation.

Xu Yun who was not far away also sighed slightly in understanding.

indeed.

May I ask which self-respecting big country and its citizens would tolerate their own airspace being invaded at will by aircraft from other countries?

This is like a village tyrant who acts arrogantly in a certain village.

Usually, if he has nothing to do, he will stroll around your door, pick some vegetables and fruits you planted, and occasionally swear at others, that's all.

What's outrageous is that when your husband and wife were having a nightlife at night, he rushed into your house while nibbling on an apple, lifted the quilt and looked at the couple lewdly.

It wasn't until after some discussion that he left humming a little tune with his hands behind his back

Who can bear this tmd?

Ni. Your grandson can bear it!

"."

After a long time.

Fifth Master Qian took back his wandering thoughts just now, returned to the two of them, and poured a cup of tea for Xu Yun:

"Comrade Han Li, have some tea."

Xu Yun nodded, because Min took the teacup and fed him to drink - after all, he still can't hold such a heavy object as a teacup now.

After a while.

Fifth Division Qian calmly picked up the pen, and began to discuss the design of the missile with Xu Yun and Yu Min.

None of the three mentioned U2 who had just passed overhead.

after all

Instead of speaking harshly at this time, it is better to save some tongues to solve the missile design problem.

Then another hour passed.

Chai Zhi and the other three groups returned to the classroom on time.

This is an arrangement that was made when the groups were divided. Regardless of whether the group produced any results, they had to return to the classroom at the end of the day—except for special circumstances where there was only a short notice.

After everyone is seated.

Fifth Master Qian still led Xu Yun to the front of the podium.

He pondered for a moment, then said:

"Comrades, five hours have passed, now please report the calculation results of your respective teams."

"Shi Jun, start with you."

Mentioned earlier.

After Xu Yun put forward the idea of ​​making a fool of himself, Fifth Division Qian divided the entire project team into four groups for derivation.

Except Qian Wushi, Xu Yun and Yu Min are responsible for supersonic axisymmetric.

In addition, the calculation of the air-breathing propulsion power by the team led by Chai Zhi,

Luo Shijun is responsible for the two-dimensional inlet configuration,

And Wu Beisheng led the team to consider the close cone design of the fixed plane shape under the condition of viscosity.

Although these three minor items are far inferior to supersonic axisymmetric in terms of difficulty, they are all quite critical links.

These links generally need to be calculated by CDF or PDF in later generations, but in this era, they can only be solved by manpower.

Hearing Qian Wushi call his name.

Luo Shijun, who was sitting in the second row, stood up immediately, with a trace of restraint on his fair face, and said slowly:

"Old Director Qian, according to the calculation results of our team, the two-dimensional inlet configuration of the 'Zhuxianjian' missile is much more special than ordinary missiles."

"It requires the side panels of the missile to be swept back, and the front body to undergo two-stage compression, which looks like an approximate rectangle as a whole."

"The specific parameters are the length of the precursor is 23.5 cm, the area shrinkage ratio is CR0.94, and the L angle distribution is 12.9°-16.5°"

Speaking of the concept of air intake, many people subconsciously think of the direction of application, most of which are fighter jets.

After all, the air intake of the MiG 23 is a very representative topic in the machine circle, even in 2023 it will be a lively and exciting point.

But actually.

The scope of application of the air inlet is still very wide.

For example, launch vehicles.

Another example is various types of missiles.

99.99% of intercontinental missiles up to tens of meters and individual missiles down to tens of centimeters have the structure of air inlets.

After all, the purpose of the intake port is to realize the deceleration and supercharging of the high-speed airflow, and convert the kinetic energy of the airflow into pressure energy.

With the increase of flight speed.

The supercharging effect of the intake port will become greater and greater.

In intercontinental missiles, the pressurization effect of the inlet can even greatly exceed that of the compressor.

For the "Zhuxianjian" missile.

Its volume itself is very small, and now it needs to increase the altitude, that is, the angle of attack will change from a normal angle of attack to a large angle of attack.

In this situation.

The inhomogeneity of the flow field around the inlet will increase, so how to deal with the configuration of the two-dimensional inlet during the research and development period is very important.

Then Luo Shijun reported each parameter.

Fifth Master Qian quickly drew the corresponding lines on the blackboard just like he had drawn the design drawings himself before.

five minutes later.

Luo Shijun finished his report.

"."

Fifth Master Qian glanced at the parameters on the blackboard, crossed his arms around his chest, and began to check.

After a while.

He suddenly stretched out his index finger and thumb, gestured the length of a vertical line in the middle, and compared it with a horizontal line on the other side.

soon.

Fifth Master Qian raised his brows, and wiped away the parameters of the horizontal lines—a L/H ratio of 6.9.

Then he put the chalk into the chalk slot, turned around and said to Luo Shijun:

"Shi Jun, when you calculated the ratio of the expansion surface, did you use the height of the isolation section of the outer cover as the divisor?"

Luo Shijun was taken aback for a moment, and subconsciously replied:

"That's right."

Fifth Master Qian revealed a trace of such an expression, shook his head lightly, and said to Luo Shijun:

"Shi Jun, you are wrong."

"If you think about it carefully, due to the volume problem, our Jade Sword missile casing can only allow the existence of a first-order compression angle."

"So the separation of the lip shock wave must use the non-isolated section as a reference, otherwise there will be blockage in the inner channel-if you don't believe me, you can use the equation of the blockage state to find a solution, yes, do it now."

"."

Luo Shijun looked at the rare and serious teacher, so he had to obey obediently.

The situation that Qian Wushi said is not complicated, and the results can be easily calculated without the aid of CFD.

So soon.

A number appeared in front of Luo Shijun:

1.22.

This number is a load ratio, and the specific concept is not important, as long as it is lower than 1, it means that there will be no blockage.

But if it is equal to or greater than 1, it means

The inner channel is clogged.

Once the inner channel of the missile is silted up, the flow field of the outer channel will change drastically.

Then the missile will

Think here.

Swish——

On the foreheads of Luo Shijun and other team members, a row of fine cold sweat suddenly broke out.

A few seconds passed.

Gollum—

Luo Shijun swallowed heavily, stood up quickly from his seat, and said to Fifth Master Qian:

"Director Qian, I'm reviewing, our team ignored the situation of the first-level compression angle!"

"Why don't you punish me? I don't mind salary deduction, notification, or even imprisonment!"

"Well Shi Jun, you don't have to be so nervous."

Fifth Master Qian waved his hand when he heard the words, and after pointing out the problem, he seemed to become that kind mentor again:

"Recognizing mistakes is a good thing, as for any punishment, there is no need for it - if you report and criticize because of some calculation problems, who will dare to take the task in the future?"

"Let's not talk about you and other comrades, even me, Comrade Yaoping next door, and Lao Guo from the base, who hasn't made similar mistakes?"

"The key is not to make mistakes under self-warning, and don't think too much about other things-the missile design will definitely go through at least one round of review after landing, and the error of the first-level compression angle is impossible to actually appear on the missile. "

"."

Hearing Fifth Master Qian's words.

The corner of Luo Shijun's mouth muttered a few times before he sat back in his seat without a word, looking a little depressed with his head down.

See this situation.

Xu Yun at the side was slightly taken aback, and a question mark appeared in his heart:

What's the situation?

Of course.

What makes Xu Yun puzzled is not that Fifth Division Qian did not punish Luo Shijun, but because

According to the original history.

This conversation should have happened fifteen years later.

Mentioned earlier.

Luo Shijun was the teacher of Yang Wei, the chief designer of the J-20. Mr. Yang Wei once mentioned an embarrassing thing about his teacher in an interview:

It was the late 1970s, when Luo Shijun led a team to solve the convergence problem of nonlinear aerodynamic calculations at high angles of attack.

Among them, Luo Shijun made a wrong calculation in the calculation of the aerodynamic angle, which was pointed out by Qian Wushi.

The content of the conversation between the two at that time was similar to the situation above.

Is this pure coincidence?

still

Because of the appearance of the "little butterfly" Xu Yun, some "parameters" in the chaotic system have changed?

"."

Then Xu Yun shook his head, temporarily putting this thought behind him.

Maybe it's just the inertia of history.

Now that this little butterfly doesn't exert its strength, it's impossible to really stir up some big storm, right?

Impossible, absolutely impossible!

After Luo Shijun sat back in his seat.

It was the turn of Chai Zhi, the deputy leader of the theory group, to stand up and start reporting the results of his group.

Chai Zhi is responsible for the process of calculating the air-breathing propulsion power. After all, although the Zhuxianjian missile uses the waverider principle, it is still different from that kind of intercontinental ballistic missile:

Although the missile can also turn vertically to horizontally by floating on water, the final sprint cannot be separated from the engine anyway.

And since it is an engine.

Then thrust is a problem that must be considered.

Of course.

Without Xu Yun's participation, Chai Zhi's team naturally couldn't come up with a scramjet engine with an integrated airframe-propulsion design.

The engine they developed is still a crankshaft-shaped through-pipe propulsion mode, which is relatively mature in technology.

In addition, Chai Zhi is the oldest and most experienced member of the whole group except the Fifth Division Qian, and has participated in many researches on key projects.

So soon.

Chai Zhi's report was not too problematic, and he quickly passed the initial evaluation by Qian Wushi and Yu Min.

Immediately afterwards.

Fifth Master Qian turned his attention to the last person, Wu Beisheng who was sitting in the corner.

The project that Wu Beisheng is in charge of is the close cone design of the fixed plane shape under the consideration of viscosity, which is also a very important part of the theoretical link.

Students who have participated in the development of DF-17 should know it.

There are actually many types of waverider models in waverider technology:

For example, a wedge-guided waverider.

As the name implies, the wedge-guided waverider is a wedge that generates the reference flow field of this waverider.

The characteristics of the waverider in this configuration are obvious, the shock wave is a two-dimensional plane shock wave, and the flow field is highly uniform, which is convenient for parametric expression and subsequent optimization design.

At the same time, the geometric configuration is simple and easy to design, the aerodynamic parameters are easy to solve, etc., these are its characteristics or advantages.

As for the disadvantage, it requires a three-dimensional reference flow field, which is more difficult.

Another example is the cone-guiding waverider.

The cone-guiding wave-rider means that the reference flow field is a conical shock wave flow field, which can be understood as an ordinary cone with a straight generatrix.

Its disadvantage is also that the shock wave configuration is three-dimensional, and the uniformity of the compressed airflow is poor.

However, the resulting advantage is that the volume ratio of the waverider will be increased.

Other than that.

Waveriders also include blunt cone waveriders, elliptical cone waveriders generated by asymmetric conical flow fields, and .

Kiss cut cone waverider.

The snout-cut cone waverider sounds similar to snakes such as Agkistrodon at first glance, but it is actually a waverider designed according to the theory of close cones.

This kind of waverider should be designed according to the way of slicing, angle by angle, which is very detailed and complicated.

The advantages and disadvantages of this configuration should be a combination of the two-dimensional (wedge) and three-dimensional (cone) waveriders mentioned above.

That is to say, the uniformity of the flow field in the middle area can be improved, and the volume ratio is also increased.

The disadvantage, of course, is that it is more difficult to design.

all in all.

At this point.

If Wu Beisheng's design structure is okay.

Then the entire missile design can enter the final demonstration link, and the production of the entity is just around the corner.

But if there is an error in Wu Beisheng's design.

Then it is more complicated.

Because in theory.

Once Wu Beisheng and the others fail, it is basically unlikely to be due to calculations, but to the original thinking—that is, the problem of Xu Yun's original thinking.

And while Wu Beisheng was reporting the results of his group.

The main factory office is about one kilometer away from this room.

Lao Guo also hurried into Li Jue's office:

"Lao Li, what do you want from me?"

"Oh, Lao Guo is here."

Seeing this, Li Jue stood up from behind the desk and motioned Lao Guo to sit down:

"Come on, sit down first."

After Lao Guo took his seat.

Li Jue poured him a glass of water, then put the glass in front of him, and asked:

"Old Guo, how is the Zhuxian project going these days?"

Although Li Jue is the general manager of the 221 base in terms of position, the Zhuxian project is also headed by him on the surface.

However, considering that the "Four Swords" of the Zhuxian project involves a lot of professional knowledge in the organization, Li Jue, a big boss, is not very good at handling detailed information.

Therefore, the task of information scheduling and summarization of the entire project is still handed over to Lao Guo, which is equivalent to supervising the army.

Lao Guo glanced at Li Jue, knowing that the capital was probably asking about the progress of the project, so he introduced:

"Overall, everything is going well. Among them, the Absolute Immortal Sword Group, which is the research and development of the capsule under the charge of Director Liu Youcheng, has the fastest progress. Now the base has no hairy donkeys."

"The second place in progress is the ultra-wideband proximity fuze research by Comrade Sun Junren and the others,"

"As far as I know, their team's theoretical derivation has ended, and the physical trial may begin tomorrow or the day after tomorrow."

"However, Comrade Wang Yaoping and Comrade Qian Wushi may not be so fast-especially Comrade Qian Wushi, the research and development of missiles has always been very complicated and difficult."

Hearing what Lao Guo said.

Li Jue nodded thoughtfully.

Then he pondered for a moment, and continued to ask:

"Old Guo, in terms of time, how long will it take for the Zhuxian platform to land?"

"."

Lao Guo looked up at Li Jue, and this time he didn't give a direct answer, but frowned and asked:

"Old Li, is something wrong?"

Hearing this, Li Jue tapped his fingers on the table a few times, then motioned Lao Guo to come closer, and said a few words in a low voice:

"Europe.British Gaul"

As Lao Guo listened, his pupils shrank suddenly.

After a while.

Lao Guo took a deep breath, calmed down the shock in his heart, and said in a deep voice:

"Lao Li, judging from the current progress, it will take more than three weeks for the Zhuxian Sword to be officially in place." Let me explain in advance, it will explode in two days)

"But now that such a situation has happened, I will try my best to do the mobilization work of comrades, and try to shorten the time."

Li Jue nodded:

"Then it's hard work for you."

finished.

Li Jue thought of something again, with a trace of concern in his eyes, and asked Lao Guo:

"Old Guo, how are your lungs doing recently?"

"Lungs? It's still the same."

Old Guo Youyou sighed, leaned back on the chair, shook his head and said:

"I recently took a few tablets of tetracycline hydrochloride given by the organization, and the effect is the same. I still have to cough up blood."

"I think there is probably no possibility of saving this lung. I can only make more contributions to our country before I die. If I can live to the day when the atomic bomb explodes, I will die in peace."

The relationship between Lao Guo and Li Jue is very good, and the two have known each other long before the establishment of the nuclear weapons project.

Therefore, facing Li Jue, Lao Guo did not hide the fact that he was coughing up blood.

Of course.

No cover up is no cover up.

If Li Jue asked Lao Guo to suspend his scientific research tasks in this way, Lao Guo would not obey what he said.

"."

See this situation.

Li Jue was silent for a moment, instead of comforting Lao Guo, he took out a box from the drawer.

This box is small in size, similar to the ring boxes of later generations. It is made of wood with a clasp on the edge.

Then Li Jue pushed the small box in front of Lao Guo and said:

"Old Guo, this is something that Comrade Qian Fifth Division brought from the capital, and the recipient is you."

"Its confidentiality level is very high, and the organization specifically explained that it must be handed over to you by me. Now you can open it and have a look."

Old Guo Wenyan blinked, with some surprise on his face:

"Something from the capital? Such a small thing?"

To know.

Not to mention that Lao Guo's wife, Li Pei, is working as an English teacher in the foreign language teaching and research section of the University of Science and Technology of China in Luzhou at this time, and she is not in the capital at all.

It's not normal for such a small box to be handed over in such a high-standard way.

At the same time in theory.

It seems that the only things that can be packed into this small box are .

letter?

Could it be a letter written by a friend of a special front or a leader of the capital?

Think here.

Lao Guo couldn't help but flick the clasp up, and lifted the lid of the small box.

The result is when you see the situation in the box.

Lao Guo was taken aback subconsciously:

Only at this moment.

In this palm-sized box, lying impressively

Three small white pills.

At the same time, only one of the three tablets was relatively well preserved.

The edges of the remaining two pieces were scorched black, and the size was so damaged that only about half of them were left, as if they were picked out from the fire.

See this situation.

Lao Guo couldn't help but raised his head and looked at Li Jue:

"Old Li, this is."

Li Jue immediately shook his head and said:

"Don't ask me, I don't know the specific situation-didn't I say that they have a high level of confidentiality."

"Ministry Liu just called me not long ago, saying that this is a special medicine specially sent by the chief to give you, you can take half of it first and see."

"If there are no accidents, your lung condition should improve temporarily."

Lao Guo:

"?!"

Just when Lao Guo swallowed the first pill in a daze.

In the classroom where the project team is located.

Fifth Master Qian also nodded slightly to Wu Beisheng:

"Comrade Youxun, thank you for your hard work."

"The design and structure of your team is quite good, if nothing else."

"The Immortal Sword of our team will appear in the world soon."

Note:

The kiss-cut cone waverider involves a lot of data, even if I edited it myself, because there is no channel to verify whether I edited it or wrote the real parameters (small beep beep: I really don't have the ability to get the real parameters Yes.), so Wu Beisheng’s report was directly cut in half, and this matter can’t be blamed on the review, it’s to avoid suspicion.