In a flowing fluid, the greater the velocity, the lower the pressure.

At present, to save trouble, he continued to extend the paper to the wings, still sticking the hat onto the Bernoulli Principle:

"Therefore, if we can in some way provide a large thrust in a short time, we might be able to send the aircraft into the sky."

"If the commoner remembers correctly, there is a technique within the Wind Spirit Moon Shadow sect called the Amplifier."

"This device isn't large, yet it can magnify an ordinary person's voice several times over, and it's not too difficult to replicate."

"If by then, Your Highness rides the aircraft and speaks to the masses through the horn, there's no need to worry about the remaining influence of the deposed emperor."

Upon hearing Xu Yun's words, Xiaozhao's eyes instantly brightened.

Although in the legends of various dynasties, it seems every emperor has some divine anomaly.

For example, Liu Bang cutting the white snake, Gao Huan's red aura and purple ether, etc., as if without some anomaly you couldn't become emperor.

But, frankly.

These so-called anomalies, most of them were rumors that emerged after ascending the throne, their authenticity is doubtful.

The truly divine appearances in the public eye have always been rare, even if there are any, they're most likely just coincidences.

But if one were to fly high into the sky during the enthronement ceremony, speaking 'Thunder Sound', it would truly be an anomaly in the open!

The effect would far surpass any general amnesty, a game-like morale +40 bug effect!

Thinking of this.

Xiaozhao couldn't sit still, and hurriedly asked Xu Yun:

"Mr. Wang, I wonder how much material the aircraft requires, and how long it would take to build?"

Upon hearing this, Xu Yun immediately assumed a thoughtful pose.

To be honest.

Though he's an old hand in the DIY circle, crafting an aircraft by hand in ancient settings is still challenging.

Just according to the halo tips.

The heaviest task is related to scoring and technical difficulty; hence, he had to propose the concept of an aircraft; otherwise, he could have just made a hot air balloon.

Speaking of aircraft, the type must be mentioned first.

Structurally, aircraft are mainly divided into jet planes and propeller planes.

The propeller plane is the most primitive powered aircraft, like those seen in old movies and documentaries.

It mainly uses the rotation of the propeller to push air behind, using its reaction force to move the plane forward.

Specifically, depending on the power, it can be divided into piston planes, turboprop planes, etc.

However, some aviation enthusiasts separate piston planes as a third kind of independent aircraft definition — this is a niche group.

Of course.

Though propeller planes have a long history, they haven't completely retired from the aviation stage, and currently account for about twenty percent.

Jet planes are now the mainstream model, like the civil airliners we take are mostly jet planes.

Compared to propeller planes, jet planes have more complex classifications.

For instance, they can be divided into turbojets, turbofans, turbo-propellers, and turbo-shafts, amongst others.

But don't look at the planes as high and lofty; a few types are quite easy to handcraft if you don't consider scoring.

For instance, the very simple pulsejet engine.

This thing is called Pulsejet in English, used in WWII specifically to launch the V1 missiles, targeted solely at John Bull.

Although from a modern perspective.

The Pulsejet has low power, large vibration, and noise, it's unstable, has a short and uncontrollable lifespan, and a narrow range of power output control.

But from a technical standpoint, the pulsejet engine is incredibly simple:

The main component is a tube, not even necessarily a seamless steel tube.

The front of the tube is blocked with a one-way valve to let air in, then insert a fuel pump and ignition, and it's ready to go.

At startup, compressed air is used to blow the front valve, combined with ignition, and it can start instantly.

Xu Yun handcrafted three to four simple pulsejets in his past life, achieving a thrust-to-weight ratio of over 500+.

However, given the lack of technical content in the design, the score would probably not be high, likely just a bit better than a hot air balloon.

Thus, after much hesitation, Xu Yun made a bold decision:

To design his own engine!

To be honest.

This is undoubtedly quite a challenging approach.

Although Xu Yun is familiar with combustion, having been responsible for relevant research at Chengfei after graduating in his past life.

Yet, this is the Song Dynasty after all.

Without supercomputers, or sophisticated production equipment, the conditions are vastly different from those of later generations.

Moreover.

Flow field analysis, compressors, turbines, rotor synchronization, clearance control, fuel lubrication, bearings, even the shape of the combustion chamber, all require absolute precision.

Conversely, blade processing, difficult in later generations, could be a bit easier since it's only about temporarily dealing with the enthronement ceremony.

Given the current technical level of the Great Song, it's relatively easy to use resources to produce blades with a lifespan of 60 hours.

But difficult as it is, Xu Yun has a vague premonition:

The rating of this task is crucial, the higher the better, it absolutely can't be done perfunctorily.

This premonition weighs on him deeply as if...

The beneficiary wouldn't be just him.

Thinking of this.

He couldn't help but look up, saying to Xiaozhao:

"Your Highness, in order to manufacture the aircraft, this humble one might require a lot of manpower and resources."

Xiaozhao generously waved his hand; he was never one for dithering:

"Mr. Wang, just say what you need!"

After a moment's thought, Xu Yun said:

"Firstly, a large quantity of iron ore, craftsmen of basic techniques, and an appropriate preparation site."

"Secondly, some rare resources, such as... meteorite, the more, the better."

The so-called meteorite refers to meteors.

Besides iron and nickel, meteors might also contain some rare metals.

Although these metals might not be particularly abundant.

However, the Great Song National Treasury's accumulation of meteors should be considerable, theoretically likely yielding some special resources.

As Zhao Ji's direct brother, Xiaozhao knew a bit about the palace's storages, thus he readily agreed:

"There are about a hundred meteorites in the palace, the small ones are the size of fruit kernels, the large ones as big as water tanks."

"If it's still not enough, I can contact the noble families across the country to meet Mr. Wang's needs!"

Xu Yun nodded in satisfaction, continuing:

"Additionally, a large number of mathematicians, like Mr. Tongyu, is also needed, the more the better."

"As for time... it would take at least six to seven months."

"Six to seven months..."

Xiaozhao repeated the timeframe, turning to Old Su.

Old Su thought for a moment, and said:

"Your Highness can temporarily preside over state affairs as a regent, not just half a year, but even a year wouldn't be a problem."

Xu Yun slightly nodded, this answer was within his expectations.

After all, Xiaozhao also needs time to subdue Zhao Ji's remaining forces, which isn't that easy.

Even the rightful Zhao Ji in history took over half a year to settle everything.

Suddenly, Xu Yun thought of something and added:

"Oh, there's one more thing that needs to be prepared."

"What is it?"

"The donkey at the Su Mansion."

........

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