"Miss Symen, gentlemen," Captain Radley Victor introduced to them, "This is the control center of the Flying White Elephant, where you can control all the movements of the airship, whether it is takeoff, landing or changing direction."

"The most important thing is these instruments, Miss Symen, most of the time during the airship journey, whether day or night, we were on the sea, and we could not distinguish directions and routes based on the ground, so we had to rely on this instrument." Captain Victor explained to them.

Jing Yu looked at the instruments on these consoles close to him, and he could recognize some of them, such as temperature meters, air pressure meters, etc., and of course a series of instruments such as compass that display directions. He even saw several navigation clocks placed in dark red wood boxes specifically for precision timing.

"Are these instruments similar to navigation?" Jing Yu asked curiously.

Captain Victor immediately glanced at Jing Yu, then turned his head curiously to look at Scarlett Saimen, and found that she had no reaction. So on the one hand, she was a little surprised by Jing Yu's identity, and on the other hand, she explained: "Yes, this gentleman, as you can see, many of the instruments on this airship are similar to those on the sea, such as this temperature meter, we can understand the temperature outside the airship, the temperature and air pressure meter inside the airship, and let us know the current air pressure outside."

"So how do you measure the height? Is it also air pressure?" Jing Yu continued to ask.

"No, sir, we usually use ropes." The captain looked at Jing Yu with an idiot's eyes. There was a special rope on the airship. As long as it was put down and almost approached, you could get the current relative height from the ground when you looked at the ruler on the rope. Anyway, the flight height of the airship in this era was not very high, so there was a rope long enough to measure.

Jing Yu felt that he was a little too complicated to think about such a simple solution. After all, this airship is different from an airplane. There is no GPS or standard ground pressure to inform you, so the altitude can only be obtained in the most primitive method.

"Then you don't need the air pressure on the ground?" Jing Yu asked embarrassedly.

"Yes, sir, most of the time, it's not necessary. Of course, if I want to raise the airship to a higher height, if the rope is estimated to be insufficient, we will use the air pressure difference method you mentioned to calculate, but it's more troublesome to use it." Captain Victor felt that Jing Yu seemed to know a little about these instruments, so he explained a few more words.

Only then did Jing Yu realize that there was a way to calculate the altitude on the airship, that is, first use a rope to record the current altitude, and then record the air pressure value displayed by the barometer at this altitude at the same time, and then calculate how many meters it has risen by the pressure difference of the airship continuing to climb the altitude, and add the original altitude to calculate the new flight altitude.

Although the accuracy is not very high in this way, it is enough for airships with slow flight speed.

"So how do you know where we are?" Scarlett Saimon also asked when he heard Jing Yu and Captain Victor chatting about this.

"If it is latitude, it is very simple. Miss Symen, you can get it by measuring the angle of the sun at noon or the angle of the North Star at night, but the longitude is a bit difficult. We must rely on these navigation clocks. They adjust the time to the local time before each departure. Then, when you need to know the longitude, calculate the difference between the sun time and the navigation clock time of the current location, and you can get the longitude." Captain Victor explained in detail about Scarlett Symen's problem.

"In addition, we have a storm bottle, which can predict the weather based on its prompts. Of course, we will also record changes in the barometer every hour. When the air pressure drops significantly, we know that there may be a heavy rain." Captain Victor continued to explain.

"So, what are these pipes?"

"There are such pipes here, mainly leading to some airbags. If we want to release some gas or replenish gas, we can operate through the valves on these pipes." Captain Victor pointed to a bunch of pipes and the valves on it and said, "Of course, most of the time we don't need to operate this way. After all, gas is very precious. We will only actively release some hydrogen and lower the altitude when landing. As for takeoff, we will abandon the ballast to raise the airship." Captain Victor continued to explain.

"Miss Symen, when we fly to New York, you can see how we landed at the observation deck, and also see the scenery of New York."

"Thank you for your reminder, Mr. Captain, I'm looking forward to that moment." Scarlett Symon nodded.

"In addition to the control cabin here, there is also a power cabin behind the airship, but it is dirty and hot there, and there is coal and steam engine inside. Is it really a good identity with you? So I won't take you there." The captain explained.

"Okay, Mr. Captain", Scarlett Symen expressed his gratitude to the captain on behalf of everyone.

"For the rest of the time, you are welcome to take a walk here as long as it does not affect our work." The captain said that he had completed the explanation and they could take a walk at will for the rest of the time.

Jing Yu naturally got the captain's permission and prepared to look around. He was curious about the control of the airship and these facilities full of rough industrial beauty. It was a pity that it was not convenient to take out the camera in his hand to take a few photos at this time, which made him feel a little regretful.

"Dear sir, you seem to be very curious about the airship?" Just as Jing Yu was concentrating on studying the airship's control machinery, Captain Victor appeared beside him. He probably had already exchanged greetings with Scarlett Saimen again, and he came to Jing Yu if he didn't know where.

"Yes, Mr. Captain, I am extremely shocked that such a huge machine can fly in the air." Jing Yu answered the captain's question, "I will introduce it, I am Yi'an Jing."

"Mr. jing?" asked the captain.

"Yes, Mr. Captain."

"I'm unreasonable, Mr. Jing, I'm curious that you seem to be unfamiliar with these instruments on the airship. Have you ever operated the airship before?" asked Captain Victor.

"No, Mr. Captain, I have never operated any of them, whether it is an airship or a ship at sea. It's just that I'm curious about these machines, so I'm very willing to understand their working principles so that they can be used in my writing." Jing Yu explained directly.

"Writing?" asked Captain Victor.

"Yes, Mr. Captain, I have written some works before, but I guess you may not have heard of them." Jing Yu replied modestly.

"Mr. Captain", Scarlett Saimen also came to participate in their discussion, "Mr. Jing recently has a novel called "Twenty Thousand Miles Under the Sea"..."

"You mean "Twenty Thousand Miles Under the Sea" was written by you?" Captain Victor, who was covered in gray-bearded face, seemed to be surprised by Scarlett Saimen's statement and asked in disbelief.

"Great, Mr. Jing, I'm reading this novel, and I never thought I could meet you here. No wonder you know all about these things. The novel about the ship sailing under the sea is so amazing. How did you come up with such a ship sailing underwater..."

Jing Yu didn't expect to meet himself or Verne's readers here, and suddenly he didn't react.
Chapter completed!