Only a stopwatch, a wind speed meter, and a tachometer are placed on the console, and the ignition method is infinitely similar to the car's starting mode.

The equipment is simple, and the height is limited.

The practical operation is naturally much easier.

Friends who have passed the private airplane license test should know this.

In China, it usually takes three to six months to obtain a private pilot license through full-time study, and the actual hands-on time is even less.

The standard is 40 hours of flight training + 20 hours of accompanied flying.

Then add a few hours of transition, night flights, and instruments.

Finally, it's 10 hours of solo flying.

Some places might need more time, some less, but overall, this is about the number.

Not to mention the performance of the Wave 2 aircraft itself.....

Back then, a group of female pilots flew this aircraft to harass the German Army every night, directly creating a bunch of super female pilots with over 1000 combat missions...

Therefore, after simplifying the operation process.

Parachute training instead becomes the most difficult part.

Of course.

Simple as it might be, Wang Bing and Wang Yue were able to stand out from the candidate soldiers, so they must have talent.

It's worth noting that among the candidates, there's Zhang Shuye, the prototype of Lin Chong.

After getting off the plane.

Wang Bing and his buddy quickly walked over to the group and solemnly saluted Xiaozhao:

"Deputy General Wang Bing (Wang Yue), pay respects to the Prince!"

Xiaozhao hurriedly made a gesture to help them up, visibly not fully accustomed to the emperor's role, and then curiously asked:

"Captain Wang, I wonder if the plane is stable?"

Wang Bing had just gotten off the plane, his face still flushed, and upon hearing this, he quickly nodded and said:

"To the Prince, we have conducted six test flights successively without any anomalies!"

Old Su, observing the situation, couldn't resist but asking:

"Zheng Ru, can we see the ground scene from the air?"

A hint of shock flashed in Wang Bing's eyes, and he exclaimed:

"Indeed, it is magnificent beyond words; from the horizon, the earth and everything look as insignificant as sand and stone."

"From the plane, one can see infinitely far, all the beautiful landscapes!"

Upon hearing this, Old Su's face immediately showed envy.

Then he looked at Xu Yun and tentatively asked:

"Xiaowang, can the old man..."

But before he finished, Xu Yun shook his head and said:

"Old man, please be patient for a few more days, and wait until everything is debugged before you go up."

"...."

Old Su sighed gently, murmuring childishly:

"...Still not my turn....."

Xu Yun slightly shook his head inwardly.

In fact.

He had finished debugging all of Wave 2's data more than two weeks ago.

After all, there was a template from the future regarding the aircraft body, and there weren't many parameters needing adjustment. Siegfried's craftsmanship was also reliable.

Even the first flight of Wave 2 was completed solo by him.

If not, he wouldn't have let Wang Bing and Wang Yue do the test drive — sending two national heroes to conduct high-risk experiments would be spine-breaking, wouldn't it?

There's only one reason Xu Yun stopped Old Su from boarding:

He feared that once Old Su enjoyed the flight, the task would be settled on the spot.

This is not just his wild guess.

Back when the 1665 dungeon settled, he still vividly remembered Little Niu Yagen's leafy meal.

If that's the case.

He might miss Xiaozhao's coronation ceremony.

Having done so much in this era, if he returned to reality without witnessing Xiaozhao's coronation, even if the halo conducted simulations to compensate, something would feel missing inside.

Therefore, he dared not gamble on the halo's temperament but chose to delay Old Su's boarding.

Then Xu Yun thought of something and adjusted his expression before asking Wang Bing:

"Captain Wang, is the equipment debugging normal?"

Upon hearing this, Wang Bing remembered his task and quickly said:

"Everything is going smoothly; Zheng Chen and I conducted operations as you instructed, and the amplifier successfully amplified the sound several times over."

"Amplifier?"

Upon hearing this word, Xiaozhao suddenly thought of something and asked Xu Yun:

"Mr. Wang, is this the device you mentioned earlier, capable of amplifying my voice several times?"

Xu Yun nodded gently, affirming:

"Correct."

In his earlier plan.

Besides 'Flying in the Sky,' Xiaozhao will perform another 'Immortal Technique' at the coronation:

Spring Thunder Bursting from the Tongue.

To achieve this, the amplifier, or rather, a loudspeaker, must be used.

The amplifier, simple as it might sound, can also be complicated.

It first converts the human voice signal into an electrical signal, complete within the microphone.

But on the other hand.

A microphone generally doesn't have an external power source.

Meaning the energy of the output electrical signal is fully converted from the received air vibration energy.

This energy is usually very limited, so the electrical signal output by the microphone is feeble.

That's when a device needs to be used for amplification, the soul of the amplifier:

Transistor.

When mentioning a transistor, one must talk about a diode, also known as a vacuum tube.

Inside a diode is typically a filament, which emits some electrons when heated.

These electrons vary in speed, and a metal plate as the "anode" is placed far from the filament.

Clearly, when an electric field is created between the filament and the anode, this electric field can accelerate or decelerate electrons emitted from the filament:

Macroscopically, applying reverse voltage sends electrons back to the filament via the electric field.

Thus, there is no current between the filament and the anode, equivalent to an open circuit state.

With forward voltage applied.

Electrons are accelerated by the electric field and can reach the anode more smoothly.

This is an "electronic vacuum tube."

Building on the electronic vacuum tube, add a metal grid between the "filament" and "anode" and apply voltage between the filament and the grid.

Then, when the electric field established by this voltage weakens electron kinetic energy, the anode receives no current.

When this electric field accelerates electrons, more electrons reach the anode.

Because the filament and the grid are closer, the electric field intensity produced by the same voltage is higher.

Thus, a slight voltage change between the two greatly influences anode current, the amplification principle of electronic transistors.

Simple.jpg.

Of course.

The real challenge with a transistor:

It requires pulling semiconductor materials into "single-crystal" materials to be manufactured.

The PN junction inside a transistor uses a special process called molecular diffusion, impossible to produce manually.

But as said.

Xu Yun didn't need to consider mass production this time, only short-term efficacy.

So, he added a simple control between the diode's electrodes.

The grid construction is simple, using nickel via precision pressure in a glass stress feedback annealing furnace, an element he mentioned when demonstrating a dagger to Old Zhong.

As for the light pulling needed for the annealing furnace....

It was naturally supplied by Brother Lv.

Nichrome wire, after hydrogen treatment from electrolytic hydrogen production, got covered with barium carbonate on the outer layer—Don't ask where this came from, Xu Yun created barium chloride from heavy poison stone while producing sodium chloride, and barium carbonate naturally came easily (see Chapter 123, latter half).

This process formed a temporary material called 'oxide cathode.'

Wrapping it around copper wire serves transistor effects for a short time.

This type of transistor can probably be used for one hour, and swapping out repeatedly can last three to five hours easily.

Once confirming the amplifier's effectiveness, only one thing remains in the entire process:

Waiting for the coronation ceremony to begin.

Thus, in the subsequent period, the pressure on Xu Yun's shoulders lightened considerably.

Every day he had time for leisure walks, checking out ball games, and visiting the pricey greens...the leafy vegetables in the Fan Building, etc.

Just like that.

A month passed in a flash.

The time finally arrived....

The day of Xiaozhao's coronation.

........

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