Into Unscientific

"????"

In the warehouse.

He heard the number [15,000 kilometers] coming out of Wang Lao's mouth.

Xu Yun was startled for a moment, and a sense of bewilderment appeared in his eyes.

What's the situation?

To know.

According to Xu Yun and Qian Wushi's previous derivation.

In order for the 'Zhuxianjian' missile to have enough speed to form a waverider or a quasi-shock wave, its fall height was about 8,000 meters higher than Xu Yun originally imagined.

When this number came to Fifth Master Qian's mouth, it became [10,000 meters] and [9,500 meters are also fine].

In the end, it was Wang Lao's turn now.

Instead of lowering the requirement, he raised it to 15,000 meters?

but think about it

Seems pretty normal too.

After all, the four characters of surplus redundancy can be regarded as the basic personality of rabbits in later generations

For example, the famous Moon Rabbit II.

The public design life of this gadget is 3 months, and the international evaluation of it at that time was quite satisfactory.

However, from January 3, 2019 to the present.

This thing is already on the moon

For four full years.

In addition, its actual running time is more than 730 days, with a cumulative driving distance of nearly 1,500 meters, and the scientific data of all levels released to the outside world exceeds 940.1GB.

Probably except the design team, no one knows how many working life the rabbits have preset for it.

etc!

Thinking of Moon Rabbit II, Xu Yun suddenly realized another thing:

The founder of China's aerospace industry is the old Wang in front of him.

in other words.

Could it be the source of all evil that the rabbits later engaged in redundancy in the aerospace field?

Hiss. I seem to have discovered something extraordinary.

at the same time.

On the long table in front of Wang Lao.

Hearing what Wang Lao said.

Except for a very few people such as Zheng Tao and Zhou Shaoping who had prepared in advance, the rest of the members were almost taken aback.

But after recovering.

Everyone didn't make too much fuss, but adjusted their sitting postures one after another, as if they were listening to Mr. Wang's request.

after all

It's not that the parameters they calculated are wrong. Or it's not their ability.

What these young people are afraid of is not to repeat the derivation, but to worry that their group's mistakes will drag the collective back.

After a while.

Zheng Tao, who has always shown a strong leadership style, glanced at his companions, and found no one to speak up, and took the initiative to express his attitude:

"Director Wang, if there is anything that needs to be improved, just tell us directly, as long as it is not a problem with our Immortal Sword Team, we can make any improvements!"

I heard this.

Elder Wang looked around again, and nodded lightly after seeing everyone's firm eyes:

"Very well, since everyone has this awareness, let's talk about business."

So Mr. Wang pulled over the movable blackboard beside him, picked up the chalk, and said:

"We originally calculated the altitude of the airship to be 30,000 to 31,000 meters above the ground, but now it has been increased by 15,000 meters, so the altitude will be 45,000 to 46,000 meters."

"In this way, the first thing we need to calculate is the lift of the airship."

"To put it bluntly, the buoyancy has to be recalculated."

Students who were airships in their previous lives should know this.

Although some airships are equipped with a power system, this system mainly provides power for horizontal movement.

As for the power of the airship to rise, it is mainly completed by buoyancy.

Generally speaking.

There is more than one airbag in the airship, the outer airbag is filled with helium or hydrogen, the inner airbag is air, and the volume is controlled by a blower.

The inner airbag is filled with air, the volume increases, and the volume of helium in the outer airbag decreases, and the buoyancy decreases;

The inner airbag draws out air, and the volume decreases, and the helium volume in the outer airbag increases, and the buoyancy increases.

And in the actual process.

This gas exchange will be affected by the air temperature, so the design will be relatively more complicated.

Of course.

The complexity here is mainly for stupid, ahem, laymen.

For aerospace professionals like Mr. Wang, this kind of gas optimization is not difficult.

So soon.

A boy with a shiny head, who looked like a top-notch man raised his hand:

"Teacher, I have an idea."

Elder Wang nodded to him:

"Yuncheng, tell me."

The bald boy named Yuncheng immediately stood up when he heard the words, walked to Mr. Wang's side in a few steps, picked up the chalk and wrote while talking:

"Teacher, students, everyone should know that the safety range of the pressure difference inside and outside the boat is very limited."

"According to our previous calculations, the pressure difference inside and outside the airship must be maintained between 250Pa-550Pa, and the maximum fluctuation allowed is only 300Pa."

"Based on this basis, we want to increase the lift of the airship, so obviously it can only be done through the inner ring exhaust"

talking.

The boy wrote down a few equations on the blackboard:

α=1ρa(h)/ρ(h)

M=ρ(h)V (1α)

α in the first equation is air density rate, ρ(h) is atmospheric density, ρa(h) is atmospheric pressure

M in the second equation is the mass of the airship, which means it is a mass equation.

Then Yuncheng continued to write several equations.

ρ(h)=ρ(0) T(h)T(0)^4.25588T

(h)=T(0)+dT h, 0≤h≤11000mρ(11000)e1.5776×104(h11000)

T(h)= 216.65K

ρ(0)= 1.225kg/m;

ρ(11000)= 0.36391kg/m;

T(0)=288.15K;

dT =0.0065K

See here.

A look of enlightenment appeared in the eyes of many people at the scene.

as expected.

Yuncheng quickly wrote down a final form:

mHe, out(t)+˙mair, out(t)=uΔP(t), eΔP(t)\u0026amp;amp;amp;amp;amp;gt; 0˙mHe, out(t)+˙mair, out( t)=0, eΔP(t)≤0

Then Yuncheng put down the chalk and said to Mr. Wang:

"Teacher, please take a look."

Wang Lao didn't take his eyes off the moment he wrote in Yuncheng, and even halfway through the writing, he had already fully understood his student's thoughts.

So after Yuncheng spoke.

Wang Laodang even nodded:

"That's right, there is no problem with the derived formula, and it is mathematically clear."

Hearing his teacher's praise, Yuncheng couldn't help laughing and scratching his hair.

The formula he wrote is not difficult to understand, and it is essentially a special atmospheric environment model.

Among them, the module of atmospheric pressure has not been written in Yuncheng, but it can be obtained by relying on the equation of state of an ideal gas.

Then Wang Lao looked at Yuncheng again and asked him:

"Yuncheng, continue talking."

Yuncheng nodded vigorously, and continued to draw a more intuitive diagram on the blackboard:

"Teacher, comrades, so my thoughts are like this."

"We can change the shape of the hull to be similar to an ellipsoid, and the slenderness ratio of the low-drag airship is about 4."

"The air exchange port is paved on the lower surface of the airship with the largest diameter—in this way, its shape can be considered to be approximately equivalent to a cylindrical shape."

"At the same time, the horizontal flow of the stratospheric airflow is relatively stable, and the vertical movement is suppressed. Assuming that the airship is running on the local horizontal plane, the hull of the airship is kept parallel to the ground, and the head of the airship is pointing due east. At this time, U2"

Looking at the big bald head who talked eloquently in front of him.

A strange sense of déjà vu suddenly appeared in Xu Yun's heart.

He seems to have heard this line of thought somewhere

But when he thought about it carefully, he couldn't get anything.

Could this Yuncheng be one of the judges of the later airship design competition?

No no no, not likely.

Yuncheng's face looks like he might be in his early thirties, and fifty years later, he will be in his eighties at least. The academicians Xu Yun met back then were all around sixty.

It's not an airship race, where would it be?

Just when Xu Yun was racking his brains to recall frantically, Yuncheng had already introduced his thoughts:

"Teacher, that's about it."

Upon seeing this, Mr. Wang patted Yuncheng on the shoulder approvingly, and then looked at the audience:

"Comrades, does anyone have any other views on Yuncheng's ideas?"

Everyone in the audience shook their heads.

They are not polite, but really have no opinion.

After all, Yuncheng had thought of ideas both in terms of formulas and ideas, and it would be a bit foolish to express objection at this time.

Then Elder Wang suddenly thought of something, and turned to look at Xu Yun:

"Comrade Han Li, do you have anything to add?"

"Huh? Me?"

Xu Yun was slightly taken aback, and realized that Mr. Wang was indeed asking himself, and quickly shook his head:

"No."

Seeing this, Elder Wang sighed in disappointment, shook his head and said:

"Then what are you doing here? I thought you had some new ideas."

Xu Yun:

"."

Boss, I'm a human, not Doraemon

Of course.

Wang Lao's words were mainly for ridicule. It is impossible for a person like him to pin all his hopes on someone—not even himself.

So soon.

Then they started discussing the next question with everyone.

"Next we discuss the downward response structure of the airship"

Just as the entire Killing Sword team was discussing the structure of the airship.

Several other project teams in the base are also steadily moving forward.

For example, Sun Junren is responsible for the ultra-wideband proximity fuze.

If Xu Yun has the perspective of God at this time, he will find that their derivation process has reached the final moment of technology placement.

Only after two or three difficulties are broken, the final production can be carried out.

Another example is the airship capsule that Liu Youcheng is in charge of.

Now more than 200 donkeys in the base have begun to grind under the sun, and fresh apical secretions are constantly produced.

However, everything in the world always pays attention to some delicate balances, and there are gains and losses.

Therefore, when several groups at the base went hand in hand.

Thousands of kilometers away in the Second Machinery Department, Liu Bosheng received a bad news.

This moment.

Liu Bosheng was looking at a young man in front of him with a serious face, his brows were tightly knit together:

"Xiao Liu, what are you talking about? The granary in Suicheng caught fire?"

The young man named Xiao Liu is quite tall, but at this moment, his back is bowed and his head is bowed, and his mood is also very low:

"Yes, Department Liu, and the fire is very serious. According to the relevant statistics of the fire scene, the food burn rate exceeds 90%."

Snapped!

Hear the number 80%.

Finally, Liu Bosheng couldn't bear it any longer, and slapped the table heavily:

"Where's the enemy agent? Did the enemy agent catch it?"

Liu Bosheng did not ask whether it was an accidental fire or arson, but directly asked about the whereabouts of the enemy agents.

After all, he was very clear about the layout of the Suicheng granary. The interior was divided into five sub-warehouses, and the distance between each sub-warehouse exceeded 20 meters.

Not to mention the possibility of a fire,

Even if it catches fire, the burning rate cannot reach 90%.

Little Liu Wenyan, who was opposite Liu Bosheng, was silent for a moment before continuing:

"Department Liu, according to the news from Comrade Wang Rong, there are a total of 9 enemy agents who set the fire."

"Three of them were killed on the spot, four were arrested and two are at large."

"This was a very organized and aggressive attack by enemy agents. Although there were no casualties, they were obviously targeting supplies."

"."

Liu Bosheng raised his hand again after hearing the words, but after hovering in the air for a while, he put it down weakly:

"Why"

As an important transit station for the rabbits in the northwest region, Suicheng Granary is the core node of the Northwest Industrial Line.

Especially after Mao Xiong assisted Huaxia Industrial Project.

The importance of the Suicheng granary has once again increased a lot.

At the same time it is very important.

This time, the food in the Suicheng granary is the winter food prepared by the organization for the 221 base!

After all, it is already August now, and winter will enter in two or three months.

Therefore, it is not too early to organize food for the winter in advance.

What made Liu Bosheng even more worried was that.

The food prepared by the organization this time can fully support the expenses of the 221 base for a full four months, ensuring that all members of the base can fully devote themselves to the project research.

As a result, with the emergence of the granary fire.

The incineration rate of this batch of grain has reached 90%, which will be fatal.

And when there is no food.

Liu Bosheng has no doubts about the consciousness of comrades at the base, but no matter how high the consciousness is, if the body is not healthy, the efficiency of research will inevitably be affected.

Suddenly.

Liu Bosheng realized another thing:

The Xiao Liu in front of him with the same surname is a member of the confidential department, not his direct subordinate.

So before he came to inform himself, he must have reported the news to the chief.

Think here.

Liu Bosheng took a deep breath and asked Xiao Liu:

"Xiao Liu, what does the organization say?"

Hear these three words on the organization.

Xiao Liu immediately took out a letter from his body and handed it to Liu Bosheng:

"Department Liu, this is the letter that the chief asked me to forward to you."

Liu Bosheng quickly took the letter and tore it up in front of Xiao Liu.

After all, as one of the persons in charge of the confidential department, Xiao Liu's secret level is even higher than that of Liu Bosheng.

Xiao Liu probably knows what Liu Bosheng knows, but Liu Bosheng may not know what Xiao Liu knows.

Tear--

There was a tearing sound from the letter, and Liu Bosheng took out a very flimsy letter from it.

Then Liu Bosheng shook the letter and spread it out gently.

Only at this moment.

A line of words was written on it:

[There is already a solution at home. If necessary, you can second the food emergency at xx. Don’t be alarmed. However, this solution is the last resort and will not be used easily. Before that, Guo Youlai, Qian Wushi, and Wang Yaoping could be invited to come together for an interview to test someone's personality, or there may be surprises - this matter can be asked after U2 is shot down, and so-and-so writes. 】

Note:

I suffered from heatstroke today, and I feel a little uncomfortable. I need to update less. I had a scrape and took Huoxiangzhengqi pills. I hope tomorrow will be better.

Although the condition is poor, it is possible to have more sizes, but the quality of the multi-size is very poor, and it is a scam if it is sent out.

Ask for a monthly ticket. It’s been 3,000 tickets in two days. If I get 6,000 tickets, I can be a donkey!