Chapter 2452: Success and failure

When artillery appeared in human history, various officers and heads of state became particularly obsessed with artillery. The scene of this artillery firing was enough to shock people beyond any level.
On the ground, the largest caliber is a 155mm artillery, and the movement of shooting is shaking the sky and the earth. This kind of 406mm heavy artillery fired on the ground, it is simply a landslide, and the sun and the moon are dark!
Qin Guan felt it for the first time. Although he had seen battleships fire on the TV screen before, it was still a picture. Although it is also a picture now, the ground under his feet is shaking, the picture on the wall is shaking, and that in his ears is that. The unacceptable roar, this kind of feeling, you can't know just by watching TV.
Even Dr. Bull's expression changed. Unexpectedly, the propellant developed with modern technology by lengthening the barrel would be so powerful!
If he didn't come in, I'm afraid he would have been injured outside now. This kind of huge shock wave could damage the internal organs. Isn't this terrible?
The whole ground is covered in smoke, part of the smoke is from the muzzle, and part of the smoke from the gun port blows up the surrounding smoke and dust. In short, nothing can be seen. The scene is a mess, even Dr. Bull has a kind of Illusion, it's not your own cannon that exploded, right? So heroic?
Fortunately, the sharp north wind quickly dissipated the smoke, and the outline of the super cannon appeared in front of him again. Nothing changed, it was still so majestic, still his cannon.
Dr. Bull suddenly turned his head and ran outside in strides. He couldn't wait to see what the cannon looked like after it was fired.
The firing of the cannon is quite spectacular, and after the firing, there will be another extremely important task, wiping the bore of the gun. If it is not cleaned, it may explode the next time it is launched. This kind of barrel is more than 100 meters long. It’s very difficult to wipe the cannon once. Fortunately, the barrel is thick enough to allow a thin man to get in and wipe it. Let the gun rise a little and drill in from the muzzle, and wipe it back all the way.
Dr. Bull expects a cannon with a one-meter thick barrel. It is also considered from many angles. After it is thick, it will be easier to wipe the barrel. Moreover, if the new cannon is cast, it can also be made into a smoothbore gun without rifling. It's easier to get up.
Qin Guan didn't immediately follow him, and just after the shell was fired, the tracking data in the later stage began.
The ground measurement and control network discovered this high-speed flying object. After taking off from the ground, it immediately reached a speed of seven kilometers per second. During the flight, it continued to accelerate and accelerate, and the rocket engine at its tail kept on moving. Pushing it, continue to increase speed, increase altitude, increase speed, and the ballistic trajectory also begins to bend. When it reaches the highest point, if the speed is appropriate, it is an artificial satellite. If it is not appropriate, then the shell will fall again.
Is it possible to launch satellites with cannons? If experiments that cost a lot of money always fail, it will inevitably attract criticism, especially in the aerospace system, there are some old comrades whose thinking cannot be changed.
This has been known since the development of the hydrogen-oxygen engine. Some veteran comrades were afraid of failure and obstructed this project. After the first launch failed, the voice became even more. Fortunately, Qin Guan’s support gave the designers confidence. Successive successes made this doubt disappear.
Now, they want to use cannons to launch satellites. That is to grab the jobs of rocket experts. Everyone knows that rockets are complicated in structure and costly, and the cost of launching is very high. For artillery, launching once is very simple. It is definitely a low-cost space launch method. Once successful, it will cause an earthquake in the entire industry.
Therefore, the rocket experts are all suspicious. If this experiment fails, their opposition will definitely be stronger. Qin Guan looked forward to further progress.
"The data looks pretty good so far." Qin Guan said. He didn't understand anything else. Just look at the degree of agreement between the observed curve on the screen and the predicted theoretical curve. Now the screen has been switched to this screen.
"Yes, it seems to be successful."
If it’s an ordinary cannonball, its velocity will decrease after it exits the muzzle. The velocity of the muzzle must be greater than eight kilometers per second to reach the first cosmic velocity after going up to the sky. However, the current The projectile is a rocket-assisted projectile. After going out, it can continue to accelerate. On the other hand, the mass of the rocket-assisted section is continuously reduced during the ignition process. According to the most basic kinetic energy formula, you can know its speed. Improve, now, under these effects, the cannonball continues to fly into the sky, flying.
"The predetermined speed has been reached, the launch was successful!" Xiucai watched the image nervously at the side, and finally shouted, success! Even laymen can tell that this launch was a success!
"Quickly, find a radio and listen to his broadcast." Qin Guan said.
This kind of launch is a near-Earth satellite, orbiting the planet in only eighty-four minutes, so when it orbits on top of your own head, you should be able to hear the sound of the broadcast, right? The first man-made satellite in Han was like this.
"Wait, look, the data seems to be wrong, right?" Xiucai asked.
There are no space experts present, and Dr. Bull has already ran out to see the cannon. It seems to him that the cannon is more important than whether the satellite is in orbit. As long as the cannon is intact, he can continue the experiment.
Now, the above keeps returning wrong information, what does it mean?
"Well, take me to the measurement and control center." Qin Guan said: "Ask them about the situation there."
Although it was all in the wilderness, the communications were already laid out. The Xiucai quickly called. When she understood the situation, her face was unsightly. Xiang Qin Guan said: "The measurement and control center did not detect this satellite. Any signal that it may have been scrapped."
The launch was successful, but after it went up, it couldn't work. It was just a piece of space junk.
Qin Guan heard loudly for a while, using a cannon to launch satellites, in principle, there is a fatal factor. The initial acceleration is too large, and the human body can't even think about it. Even if it is an electronic device, under that acceleration, All may fail. To use an inappropriate analogy, the current inside is formed by the flow of electrons. Under this acceleration, the direction of electron flow inside may change under inertia. In this way, the circuit naturally fails. .
"Go, go to Dr. Bull and talk about this issue." Qin Guan said. When Dr. Bull said that the artillery-launched missile was fine, Qin Guan agreed. Now think about it, although the principle is the same, the quantity value is different. This is super The acceleration inside the cannon is much greater than the acceleration of the missile launched by a tank gun.