Neverwinter, on the outskirts of the West Wall.
The huge roar attracted many people to climb the city wall and look around. The First Army has blocked the entrance to the Hidden Forest to prevent anyone from breaking into the test site.
Although the location is far from the city wall, if you use the observation glass, you can clearly see what happened here. It seems that we will have to find a remote place as a dedicated arms test base in the future, Roland thought.
"Your Majesty, the second round of launch is ready!" The artillery soldier reported.
"Everyone, go into the bunker," he beckoned. "The countdown after confirming that no one is there."
At the same time that the 152mm howitzer is being tested to study the magic stone sigil, Roland has not put down the improvement in thermal weapons. Now that Tifeko has been destroyed, the North has declared his surrender, and the situation in Greycastle is very good. He also has the time to calm down and make a new round of improvements to the cannonball.
But I have to say that the technical difficulty of howitzers with trigger fuzes is several stages higher than that of solid bullets. Anna will handcraft four shells for testing every day, but after three consecutive days, none of the shells exploded successfully. Even during the test on the second day, one of the shells exploded right out of the chamber, causing the tubes of the new artillery used for the test to be crooked in half. Fortunately, Roland was prepared and dug a few trenches around the test site to prevent accidents, so that no casualties were caused. As for the soldiers closest to the artillery, their eardrums were broken, and Nana was cured in time.
"Can this thing really explode when it hits the enemy, as you said?" Agatha couldn't help but step on her feet to visit in the ditch, "I asked Anna, it's just made of a few pieces of metal, it's not life. body, how can you tell if the opponent is an enemy?"
She is one of the most active witches in the alliance for weapons testing. After learning about this, she even put aside the production of the chemical factory for a while, and made a special trip to watch the research progress of the new cannonball.
"It will not explode when it hits the enemy, but when it falls into the enemy's position," Roland corrected. "This is also a requirement that a howitzer must meet. If there is no insurance to ensure this, the shell may go off at any time. Too dangerous."
Trigger insurance is the core technology of the new shell, and it is also the focus of the test.
In order to avoid collisions and accidental explosions caused by falling off, he painstakingly set up a total of three insurances.
First, the fuze is stored and transported separately from the shell. The fuze is shaped like a cone with a handle, about the size of a fist, and its tail is threaded. When installing, it can be screwed into the notch at the top of the shell, which is fast and convenient. convenient. Since the shells are loaded with double-base chemical gunpowder, it is difficult to detonate without a detonator, which fundamentally ensures the safety of logistics.
Then there is the inertia insurance in the fuze.
It is similar to a door lock. Under normal conditions, it is held up by a hard and straight spring and cannot move. When the projectile is fired, the huge inertia will make the lock cylinder recoil, so as to overcome the resistance of the spring to pull the card teeth and release the second insurance.
The principle is very simple, but it is not easy to achieve. The first two days are basically spent on this. If the spring is too hard, the lock cylinder cannot sit back enough distance, and the spring is too soft and not safe enough. This can only be done by Anna. The test firing conditions were adjusted slowly, and a more reliable spring compression data was obtained after six rounds of testing.
The last insurance is the centrifugal detonator device.
It is also the most technical thing in the fuze. In short, the detonator is embedded in a semi-circular iron plate the size of a coin, which is usually inclined in the center of the fuze and fixed by a spring. At this moment, the firing pin, detonator, and activator are not in a straight line. Even if the shell falls from a height, the firing pin will not touch the detonator, avoiding the risk of fire. The iron plate is in a movable state only after the teeth of the second insurance are released from the locking position.
Due to the action of the barrel rifling, the grenade will spin at a very high speed after being ejected from the barrel. Under the action of centrifugal force, the inclined detonator will gradually return to positive, similar to the rotating top, the center of gravity will move closer to the central axis. This process is completed within about two or three hundred meters after the gun is fired. In this way, even if the muzzle is blocked, or there is a branch on the top of the head, the warhead will not explode in advance.
When the detonator is completely backed up, it forms a straight line with the firing pin and the activator. At this time, once the fuze touches the ground, the firing pin will plunge into the detonator, and then the high-heat gunpowder jet will be accustomed to the warhead of the warhead by the activator. , tear the surrounding enemies to shreds.
The advantage of centrifugal insurance is that if the projectile misfires, the detonator that loses centrifugal force will be pushed back to its original position by the spring and become inclined again, so the recovery work is much safer.
In addition, if the whole grenade is captured by the enemy or accidentally found, it can only be used as a solid shell if it is launched by conventional methods and cannot obtain sufficient centrifugal force. As for dismantling the imitation, it is even more impossible.
"Prepare to launch, count down five times!"
Observers issue orders.
The fuse, which had been lengthened several times, slowly tightened, and the gunner who was hiding in the trench retrieved the rope little by little.
"Fire!"
As the soldier pulled hard, the ground trembled instantly.
The violent muzzle wind swept over the heads of everyone at the scene with the roar, and Roland felt that many small particles of soil rolled into his collar. Even if I blocked my ears, I could feel the tremors coming from the soles of my feet.
"Drop point observed, no explosion, repeat, no explosion."
The sound of lightning quickly came from the Listening Sigil in Nightingale's hand.
"Understood, we'll go over immediately." She took out another magic stone and replied.
"...Failed again?" Agatha couldn't help but feel a little frustrated.
"It's normal to fail when you're fumbling around," Anna comforted. "Once we find the right direction, we can make sure we don't fail again during mass production."
"That's right," Roland patted her head approvingly, "and now with the assistance of Axia and Sylvie, this research and development progress has been amazingly fast."
In the future, it is not a big deal to test the shape of the grenade with thousands of rounds. It is nothing short of fantasy to find out the problem within two or three rounds.
When she came to the location where the warhead landed, Anna cut off the fuse with black fire to ensure the safety of the warhead. Then the soldiers took away the waste bomb, whether it was gunpowder or metal bullet, which could be reused, so naturally it couldn't be wasted.
"A-Xia, it's your turn." Roland gestured to her.
"Yes, Your Majesty," she nodded, displaying the ability to replay, and instantly a phantom of a projectile that was about to fall to the ground appeared in front of everyone.
A-Xia's magic level is still low, and after months of training, she can only support four playbacks, but through precise control of magic, she is now able to freeze the replayed scene at a certain moment.
And this playback is a perfect reproduction of the scene, in other words, Sylvie's perspective can see that the inside of the illusion is no different from the real scene except that it cannot be touched.
This is what Roland relies on to solve the spring strength problem with only eight rounds of shooting. (., Your support is my biggest motivation.) 17-02-04 05:29:32