The first cosmic speed is a threshold. If you want a satellite to launch into the sky and orbit the planet instead of falling, you must let the satellite have enough speed. This speed is the first cosmic speed, which is smaller than this speed. , It's like a cannon firing a cannonball, no matter how far it flies, it will eventually fall.

Now, Dr. Bull says that this cannon has reached the first cosmic speed. Of course, it shocked Qin Guan. If this is the case, it means that it is really possible to launch satellites with this thing?

"So, when you exit the muzzle, can you reach this speed?" Qin Guan continued to ask. If you can reach this speed when you exit the muzzle, you need to continue to slow down when you leave the atmosphere, and you may go out. If the speed is not enough, you have to fall down.

Dr. Bull shook his head: "At the time of the muzzle, the speed was still a little slower, so what we wanted to launch was a rocket booster. Finally, with the help of the rocket, the projectile was pushed to the first cosmic speed, just when it was out of space. "

Qin nodded his head. It was almost the same. Rocket-assisted projectiles are a common type of ammunition for large-caliber artillery. In order to increase the range, the warhead is boosted by rockets. The range of this projectile can be increased by about half the distance.

"If this experiment is successful, we hope to build a cannon with a caliber of more than one meter. After all, the caliber of the current cannon is still relatively small. If you want to launch a satellite, the size of the satellite is greatly restricted." The doctor said. Now, their cannon is long enough, but the caliber is not enough. With a caliber of 400 millimeters, what kind of satellites can be launched? The diameter of a satellite must be at least one meter in diameter, that is of practical value, right? Moreover, if the caliber of the cannon reaches one meter, and enough propellant is added, the projectile that can be propelled will weigh about two tons. A two-ton satellite is already a large piece of satellites, which has full practical value. .

"So now, what are the shells we fired?" Qin Guan did not answer Dr. Bull's words. After all, the investment is acceptable if we use the naval guns of the abandoned battleships to rebuild. If we continue to build new cannons, the investment will be very high. Well, if there are results, but if there are no results, just to satisfy the personal hobby of this artillery genius, to invest a lot of money in building a big toy for him, it is definitely not worth the loss.

Of course Qin Guan knows that ordinary Iowa-class battleships use MK8 APC shells. These shells are quite large, weighing 1224.7 kilograms, and a ton of shells. If a shell goes down, a basketball court will change. It becomes a terrible crater, and people nearby will be shaken to death. It is so powerful. The terrible power of this artillery is also the favorite thing for some war madmen. Just longer than the length, a warhead is 182 cm long, and a high The height is the same, if you count the propellant, it will exceed the height of two people!

Now, what will happen if satellites are launched? What about this warhead?

"According to our calculations, if we want to use this cannon to launch a cannonball and reach the first cosmic speed, the weight of the cannonball cannot exceed one hundred kilograms." Dr. Bull said: "So, we made a simple warhead specially. The outside is a thick metal layer, and there are only simple instruments inside. After going up to the sky, a broadcast will be sent to the world."

Speaking of this, Qin Guan suddenly remembered the first man-made satellite in the Han country. This man-made satellite was broadcast. Now Dr. Buhl is only a researcher of artillery, and he is definitely an outsider in researching satellites. It is enough that the satellite can broadcast after it is in the sky.

"What is broadcasting?" Qin Guan asked.

"Super cannon, launch satellites, Dr. Bull, dreams come true." Dr. Bull said seriously.

Suddenly, everyone present suffocated hard to prevent themselves from laughing. This is the Western way of thinking. In China, the ancient culture makes people learn to be humble, while in the West, they are all arrogant and arrogant. At this time, Dr. Bull certainly wanted to show his credit.

Qin nodded his head in view: "Well, that's it."

The country didn't pay much attention to this project, and it didn't take it seriously. It was Qin Guan's own work. Now, Dr. Bull wants to use this cannon to launch satellites to make him famous.

"However, do you need the help of our Aerospace Measurement and Control Network?" Qin Guan asked.

In that parallel time and space, the North Kimchi Nation is quite arrogant. From time to time, it conducts nuclear tests, launches missiles, etc., especially in the name of launching satellites to conduct missile experiments. However, although they can launch, they Without the ability to measure and control, of course, they don’t have to worry. As long as the launch is successful, the Eagle Country’s survey ship will soon be measured. Just launching but not monitoring is not perfect space technology.

Now, Dr. Bull is about to launch satellites too. Does it need to be monitored?

Dr. Bull shook his head: "No need, our shells don't need any control."

This is the launching of shells, not rockets. The process of rockets is cumbersome. Several stages of rockets fall off one after another, and they are fired in the air again. The giant cannon is used to launch satellites. That’s one thing. Simple, after firing the cannonball, even if the mission is completed, there is no need to control it, so there is no need to bother with the space survey ship, but if the space agency can monitor it, so much the better.

"So, what if it fails to launch? Will it fall down?" Qin Guan asked, if it doesn't reach the speed, it will definitely fall. If it falls, where will it fall?

"We will not fail, I'm sure." Dr. Bull is very confident. For him, there is nothing beyond his consideration. He has been waiting for this day for a long time.

"Let's design the direction of the launch carefully." Qin Guan said: "If you launch directly eastward, if you fall into the capital or a nearby population gathering area, then the trouble will be big."

Even if the shells were less than 100 kilograms, the impact would be catastrophic if they fell. Therefore, this test firing was definitely not a trifle. In the event of an accident, Qin Guan could not bear the responsibility.

"Yes, if our artillery can be moved to the coast, once the launch fails, the cannonball will fall to the peaceful ocean, then it will be much safer." Xiucai also said.

It is now in the west and launching towards the east. The danger is too great. However, the planet's rotation is from west to east. Therefore, most rocket launches are also from west to east, making full use of the linear velocity brought about by rotation.

The cannon is impossible to move, and after it has been welded into such a monster, it can only stay here.