Lin Yuan heard the other party say that they were from the Pulan Company, and couldn't help but ask in surprise, "Are you really from the Pulan Company?" ”

The staff member on the other side glanced at Lin Yuan, saw that he was very young, and thought he was Xu Jingcheng's entourage, so he ignored him, and then explained the gyroscope to Xu Jingcheng, Shen Wanqing asked on the side: "Isn't it a company that produces gyroscopes?" Why are you so excited? ”

Lin Yuan said: "This is the Pulan Company, their company's products have changed the history of naval warfare, do you know what to prepare when using naval artillery as the main combat weapon?" ”

Shen Wanqing said: "Of course, if you want the shells to hit the opponent's warship, you must grasp the timing and direction of the cannonball, and let the cannonball fall exactly at the point where the enemy's warship will sail by, if you want to achieve this goal, you must calculate the distance, direction, and speed of the enemy's warship." ”

Lin Yuan said: "Okay, do you know how these data should be measured?" ”

Shen Wanqing stopped talking, Lin Yuan said: "First of all, there are two methods of measuring distance, one is to measure it optically, to put it bluntly, it is to use a telescope and a dial that can indicate the direction, the two are combined, and the distance is calculated by the principle of triangulation, as well as the stereo rangefinder and the combined rangefinder made by using the human visual effect, we will talk about it later." ”

"The optical method is to use the optical band for ranging, and the equipment for ranging using the microwave band is the radar, the time difference between the arrival of electromagnetic waves and the reflected waves, multiplied by the speed of light divided by two, is the distance between the radar and the target, the knowledge of radar ranging is also very deep, and there are many techniques that need to be used, and there is no such technology in this era."

"Under the current optical ranging conditions, distance measurement and azimuth measurement are inseparable, only the azimuth is measured, the distance can be measured, then the speed is left, in the case of radar, we use the relationship between the reflected wave frequency and the speed of the reflector, that is, the Doppler effect, the speed can be easily measured."

"However, in this era, there was no radar, so the determination of the speed of the ship depended on human experience, relying on the waves generated by the bow hitting the water surface to judge the speed of the enemy's warship. But after measuring the distance and speed, the problem comes, the distance you measure is only the distance at the moment when you measure it, and the enemy's warship cannot stand still stupidly, it must be in high-speed motion. ”

"When your warship and the enemy's warship are running in parallel, this distance will not change, but in actual combat, there must be an angle between you and the enemy, so that the distance changes at all times, so how can I determine where I should aim at the next moment according to the data that I already know?"

Shen Wanqing asked blankly, "Yes, where should we aim in this case?" ”

Lin Yuan said: "When human naval warfare was just emerging, there was no need to consider this problem, because the most primitive naval warfare was faced by everyone, you look at the ancient naval warfare weapons: a sharp steel cone was installed on the bow of the ship, which was used to pierce the enemy's ship; Install a slapstick on the ship and hit the enemy's warship like a fly, but the most conventional tactic is to jump on the opponent's warship, and then fight hand-to-hand with a knife. ”

"When artillery skills developed, people began to move artillery to ships, and artillery became the main weapon of naval warfare.

"But in this era, at the end of the 19th century and the beginning of the 20th century, the firing range of artillery has changed dramatically, from less than 1,000 meters to nearly 40,000 meters, so the problem of aiming is extremely prominent, in order to solve the problem of aiming, people have come up with such a solution, if you can find the distance change of the enemy's warship in a unit of time, you can know his position after a certain period of time, so that the artillery can also be accurately aimed."

At this time, Xu Jingcheng looked at Lin Yuan and coughed deliberately, Lin Yuan realized that he thought his voice was too loud, Lin Yuan hurriedly lowered his voice, and then said: "So people continuously observe the distance data of a piece of artillery, and use mathematical methods to solve its distance change in unit time, but it is difficult to do so, because there are a large number of observation errors, and the numbers are very large, and it is not easy to calculate." ”

"So something that changed the history of naval warfare appeared--a fire control system with a mechanical computer as the core, and the mechanical computer is calculated in a mechanical way, such as calculating multiplication 2 times 3, you can use two gears, the transmission ratio can be positioned 3, let one of them rotate twice, and the number of turns of the other is the result."

"The mechanical computer used to calculate the change in distance between warships was first invented by a man named Demerrick in 1902, and later in 1903 there was the Vickers clock, which can integrate the rate of change of distance to calculate the current distance, but because the warship is affected by waves at sea, it often creates errors when measuring distance."

"If the distance is not measured accurately, then the distance change rate can not be accurate, so at this time, Puran appeared, he was originally a lawyer, but later developed a strong interest in the fire control system, and later established the Puran company, the gyroscope was used in the stability of the measurement system, and the previous simple fire control device was integrated and reformed, so as to develop the Puran fire control system."

"After the Puran company figured out this system, the navies of various countries began to pay attention to the fire control system, so in the Battle of Jutland in World War I and several battleship battles in World War II, the combat distance of the main guns of both sides was more than 20,000 meters, and this set of fire control system should have appeared in 1908, but I didn't expect it to be twelve years in advance!"

Lin Yuan made a long speech, and Xu Jingcheng came over and said: "As they said just now, the function of this gyroscope is very magical, it can be used to stabilize things, and this thing can be used to measure how much the ship deviates from the predetermined course in the vast sea, so as to correct the course. ”

Lin Yuan asked, "Did they only talk about the application of this thing on the navigation system?" ”

Xu Jingcheng didn't understand Lin Yuan's question, and couldn't help asking, "What did you say?" ”

Lin Yuan ignored Xu Jingcheng, came to the staff member, and asked, "What is this thing in your company used for?" If it has a wide range of applications, I would like to be able to buy some. ”

The man said, "Our gyroscopes are mainly used for navigation. ”

Lin Yuan took the opportunity to ask: "Mainly used in navigation?" Do you have any gyroscopes that can be used in other applications? ”

The man was stunned for a moment, then replied, "I'm sorry, we can't answer your question." ”

Lin Yuan looked at the nervous appearance of the man, and thought to himself: "I understand, you must have applied the gyroscope to the fire control system, if you want to keep it secret, just tell me if you don't have it?" Isn't this answer that there are no three hundred taels of silver here? ”