No wonder Eric Gable was so shocked, because it was a shell with a speed of Mach 10!

What is the concept of speeds over Mach 10?

That means that Huaguo has mastered the technology of electromagnetic railguns!

Yes, Eric Gable is well aware that once the velocity of an artillery shell exceeds Mach 10, it can only be fired by an electromagnetic railgun, because the firing speed of ordinary gunpowder shells has innate constraints in two aspects, making it impossible to reach such a high speed.

The first constraint is the tactical limitation of weapons.

Because the projectile of an ordinary gun is driven by the high-temperature and high-pressure gas produced by the combustion of gunpowder, the projectile is driven by the gunpowder gas to accelerate along the barrel during the firing process, so theoretically speaking, the longer the barrel, the higher the speed when it leaves the muzzle.

But as the projectile accelerates, the pressure of the gunpowder gas that pushes it decreases due to the expansion of the volume, and when the pressure drops to the sum of the friction between the projectile and the barrel and the air resistance in front of the projectile, the acceleration of the projectile stops.

Of course, in order to delay this moment, one could increase the charge to increase the initial pressure of the gunpowder gas in the chamber, but this would inevitably require a longer and stronger barrel, and the end result was that although the velocity of the projectile may have increased, the long, dumb guy was so maneuverable that he could not be used as a weapon.

The second constraint is the inherent limitation of the principle of driving gunpowder shells.

As we all know, the ****** of modern artillery (guns) is smokeless gunpowder with nitrocellulose or nitrocellulose ******** as its main component, which contains carbon, hydrogen, oxygen, nitrogen and other elements.

When gunpowder is burned, a gaseous product consisting of these elements is produced, which has an average molecular weight similar to that of air. Since the speed of sound is directly proportional to the square root of the temperature of the gas and inversely proportional to the square root of the average molecular weight of the gas, the sound velocity of gunpowder gas is not very high.

We also know that when the gunpowder gas accelerates the projectile, it undergoes a process in the barrel of the gun (gun) called "one-dimensional unsteady expansion" in aerodynamics. In this process, the driving gas expands and accelerates, but its velocity does not increase indefinitely, but has a limit.

This ultimate expansion velocity is 3 to 10 times the speed of sound before expansion under the conditions of infinite length of the gun chamber, ideal gas without heat transfer and friction, and expansion into a vacuum.

This velocity is the idealized ultimate velocity of expansion, which is equivalent to the conversion of all the energy of the fluid into the kinetic energy of the flow - which is of course impossible, and therefore the actual ultimate velocity of expansion is much lower than this value.

When the expansion rate of the driving gas reaches the limit, the velocity of the projectile also reaches the limit. It is this ultimate expansion rate that becomes an inherent limitation in the driving principle of increasing the speed of ordinary artillery (gun) projectiles.

To sum up, in real life, it is simply impossible to bring the speed of gunpowder shells to more than Mach 10!

In addition to gunpowder shells, the only other weapons that can make shells reach such a rapid speed are electromagnetic acceleration weapons!

……

"How is this possible, how is it possible......"

Eric Gable muttered to himself with a grim face, and after a while, he suddenly came back to his senses and yelled at the communicator: "Immediately, immediately connect me to the Pacific Fleet!" ”

"Yes!"

The correspondent was taken aback by the sudden outburst of anger Eric Gable, but immediately carried out his order, and soon the call was answered.

"Colonel Eric, is there anything wrong with you?"

Scott Swift, commander-in-chief of the Pacific Fleet, did not speak very well, and Scott Swift's performance at the press conference a few days ago made Scott Swift very dissatisfied, and he believed that Eric Gable did not have the domineering attitude that the American military should have, and was not worthy of being an American soldier.

Eric Gable naturally knew that he was not popular with Scott, but he still reported truthfully: "Yes, Your Excellency, Commander, we have just discovered a very important matter in the vicinity of the Chinese military exercise in the South China Sea. ”

"What's the matter?"

Scott's brow furrowed when he heard this, and although he thought Eric Gable was very weak, he still took Eric Gable's opinion very seriously.

"We ...... It was discovered that the Chinese military may have mastered the technology of electromagnetic railguns and applied them to existing warships! ”

Eric Gable took a deep breath and said slowly.

"Electromagnetic railgun?"

However, after hearing Eric's report, Scott let out a sneer: "Colonel Eric, now is not the time to joke!" ”

"No, Your Excellency Commander, I'm not going to joke with this kind of thing, in fact I have already sent you the information I monitored, and you will receive it soon!"

Eric wasn't annoyed, because he was shocked even when he saw the report in person, let alone Scott, who was thousands of miles away.

"Well, Colonel Eric, I want you to know exactly what awaits you if you make a mistake in this matter!"

Scott snorted coldly, then hung up.

Hearing the busy tone on the phone, Eric smiled bitterly and muttered in a low voice: "I said a long time ago that I don't want to come to Nanhai." ”

And at this moment, the communicator again loudly reported: "Your Excellency, Colonel, another report of shells with a speed of more than Mach 10 has been found!" ”

"Coming back?"

Hearing the report, Eric only felt his heart beat hard, took a deep breath to stabilize his mind, and said in a deep voice: "Send the information directly to the Pacific Fleet Command." ”

"Yes!"

The correspondent immediately replied with a salute.

Looking at the figure of the messenger leaving, Eric slowly sat down in his chair, and a worried look appeared on his face: "Submarine...... Electromagnetic railgun...... The Chinese military, how many methods are you hiding? ”

At that moment, his phone rang suddenly.

"Your Excellency ...... Commander"

After answering the phone, Eric was interrupted by Scott Swift as soon as he shouted: "Colonel Eric, I order you to immediately send the 'Hawkeye' early warning aircraft to the sea area for reconnaissance!" ”

"But Your Excellency Commander, this is the area of Huaguo's military exercises, if we send an early warning aircraft, once it is discovered by Huaguo, it will lead to very serious consequences!"

Slick was taken aback when he heard this order, Huaguo has ghostly submarines underwater, and there are electromagnetic railguns on the surface that cannot be intercepted at all by extremely fast speeds, who knows if Huaguo has always hidden some unknown means in the air?

"Colonel Eric, you have to remember that in the field of the Air Force, we in the United States are number one in the world!"

Scott said proudly: "The Chinese will not find out about us no matter what!" ”

"Your Excellency, I think it's still ......."

Eric Gable still felt a little unreliable, but before he could finish his sentence, he was rudely interrupted by Scott: "Listen, Colonel Eric, I'm not talking to you again, this is an order!" ”

“…… All right! ”

Eric Gable was silent for a long time, and finally agreed, but still added: "But Your Excellency, Commander, I will truthfully report this matter to the Pacific Command and the Department of Defense!" ”

"Whatever you want!"

Scott sneered and hung up the phone, in his opinion, Eric Gable had been frightened by Hua Guo: "Hmph, if you want to find our 'Hawkeye' early warning aircraft, Hua Guo is still far away!" (To be continued.) )