"What is this?" Qianyu was not tall enough, so he could only observe the particles from the thick bottom of the cup. "It doesn't look like fragments of aircraft parts." (Generally speaking, the fragments are long and narrow fragments.

, otherwise it is basically impossible to break it.)

"Pebbles?" the captain asked uncertainly. "But even if it's a pebble, isn't it a little too small?"

"Rock?" Conan was also unsure.

"Not entirely accurate," the boy glanced at Conan and Qianyu, smiled and lowered the cup to a height where they could look at each other. "I think the most correct term is - volcanic rock."

"Ah?" Qianyu was stunned.

"Volcanic rock?" the first officer was surprised.

"You mean..." Conan probably had the answer in his mind.

"We have limited time, so do as I say first," the boy motioned the captain and co-pilot to return to their seats. "Descend immediately until the current situation of particles hitting the cockpit glass ends."

"If it goes down, we will make an emergency landing on the sea faster!" The captain frowned, but still sat on the seat with the co-pilot. "I'll give you a minute to convince me."

"We are flying in volcanic ash," the boy sighed and explained. "The dust in the volcanic ash was inhaled by the engine, causing the entire engine to be blocked! As for the evidence, there is no reaction on the weather radar."

"What's the reason?" Although the captain was deep in thought, the first officer didn't buy it.

"Weather radar," the boy tapped the radar screen. "Its detection principle is to detect water droplets in the clouds to mark the height and position of the clouds. But if there are no water droplets in the clouds, then it can't do anything. For example

Say, the volcanic ash cloud I just mentioned contains calcium oxide, which can react with water to produce hydrated lime, so there will never be a trace of moisture in this kind of cloud."

"First officer, descend." After hearing this, the captain expressed his attitude with his own instructions.

"Captain!" the first officer quickly tried to dissuade him.

"I'm afraid he's right," the captain shook his head. "Do you remember that those stupid Indian pigs couldn't understand what we said? This is all because the volcanic ash rubbed past our plane and generated static electricity.

- that is, the flash on the engine - this interferes with our communication system. But, little guy, what about the motivation? Even if we can leave this volcanic ash cloud, we don't have enough savings to return to the 6th place."

"So when there are no more rocks hitting our windows, that is, when we leave the volcanic ash cloud, we will proceed to the next step. Now we descend first, and the motive... leave him alone until we leave the volcanic ash cloud.

.”

"Tell us what we should do first," the captain said helplessly. "If we give the order after escaping, we may not have enough time."

"What's our speed?" The boy looked at the captain's empty watch. "33o miles?"

"33o miles?" The first officer was stunned, and then looked at his empty watch. "My speed here is 28o miles!"

"What?" The young man quickly came to the first officer's empty watch, and sure enough he saw that the pilot's and first officer's empty watches differed by as much as 50 miles. "This is troublesome..."

"Yes," the captain said solemnly. "We are in big trouble."

"Excuse me," Conan was a little confused. "What happened?"

"As a large passenger aircraft, the engine can only be successfully started when the speed is within a very small range," the boy replied. "The starting speed of this aircraft is 25o miles to 27o miles. The trouble is, it is impossible to confirm which empty meter is right now.

It’s in perfect condition, so I can’t confirm its accuracy.”

"Let's not talk about this problem for now," Qianyu suddenly thought of something. "Since the motive has been blocked, we can't move the damaged motive even if we leave the volcanic ash cloud!"

"Yes," the boy smiled. "The reason why the engine will be blocked is because the temperature of the engine is as high as two thousand degrees, which will melt the volcanic ash and flow into the engine. Once the volcanic ash is not heated by the heat part of the engine, it will regenerate.

It solidifies into a relatively viscous form between solid and liquid, blocking the engine. When it is halfway clogged, the backfire we saw before will appear, and when it is completely clogged, it will shut down."

"However, if the volcanic ash completely solidifies into a solid state, most of the volcanic ash will naturally fall off due to various forces and break away from the motor, and the motor will be able to operate."

"So, we are cooling the volcanic ash now?" Conan raised an eyebrow.

"No, no, no," the young man shook his head. "The cooling process is not as slow as you think, especially since our plane is so fast, it will be cooled to the level we need very quickly. My plan now is to confirm

Which empty list is correct?"

"How can we determine this?" the captain asked. "Don't we have any other measuring instruments?"

"The law of conservation of energy," the boy shrugged. "The change in kinetic energy = the change in potential energy - the work done by air resistance. The rest is almost negligible. Pull the nose down five degrees and pull the ailerons up fully. I need three

Answer in ten seconds."

So, in the next few dozen seconds, the captain pulled the nose of the plane to the angle requested by the boy, and the boy stood behind the captain, silently looking at the altimeter.

"Just as I guessed," the young man suddenly showed a relieved expression. "The captain's watch should be more accurate."

"That's what you guessed?" the technician was surprised. "I also feel that the captain's watch is correct, but how did you guess it?"

"If the speed is really as slow as 28o miles, when I came in just now, the plane's speed would never have passed 29o miles, and the length of the backfire flame would definitely not be that long. The length of the backfire just now was probably 3o yards.

above."

"We're out," following the captain's reminder, several people discovered that the plane had left the coverage of the volcanic ash cloud. "What should we do next? Reduce it?"

"Keep it at this altitude," the young man said decisively. "Don't slow down, fly level, and let the speed drop naturally. Now you can start preparing to restart the engine. The startup procedure stipulated in the regulations is three minutes, and you have six or seven chances.

Look, otherwise we will feed the fish."

"The current speed is 330 miles, do you want to start now?" The captain was stunned.

"I didn't say that your watch must be accurate," the young man said speechlessly. "It's just that the first officer's speed is obviously too slow, so we have to try it slowly."
Chapter completed!