"Yes, Your Majesty!"
After Xu Guangqi saluted Chongzhen, he pointed at the twenty simple grenades in front of him.
"Your Majesty, there are twenty-four here in total, six each of half a catty, one catty, one and a half catties, and two catties.
Each kind of appearance is wrapped with hemp rope, cotton cloth, and fur, two of each.
Ten lead pieces were added to each one. Time was short, so we only made so much! "
"In terms of appearance, it won't be easy to change for a while, so it hasn't changed."
"But we made adjustments to the fuse. According to Commander Cao, one pound can be thrown twenty to thirty feet away. After discussion, we changed the fuse to a burning length of about three breaths."
"Three breaths?"
Chongzhen whispered, thinking quickly in his mind.
The grenade is thrown in a parabola, with two directions: free landing and forward. According to the distance mentioned by Cao Bianjiao, the hand grenade's hand speed is thirty to thirty-five meters per second.
It takes three to four seconds from throwing to landing, plus ignition, reaction and other processes, the whole process takes five to six seconds.
Three breaths of the fuse last for about nine seconds. If you include the factors that accelerate the burning of the grenade when it is flying in the air, it may only be about seven seconds.
It exploded one second after landing, which was a very reasonable arrangement.
Although it is unlikely that Xu Guangqi and others know the concepts of free fall, air resistance, initial velocity, etc., their estimates are already very good.
"Now that you're ready, let's start testing!"
Listening to the emperor's order, Xu Guangqi raised his hand, and more than a dozen sergeants poured into the valley and walked towards the house on one side.
Then, everyone took out scarecrows one by one and arranged them into circles.
"This is?"
"Your Majesty, this is a scarecrow for testing. The inside is made of iron bars and wood as a frame, and the outside is wrapped in straw.
Then put on cotton armor, leather armor, fish scale armor, leather armor, etc. The weight is about the same as a real person.
It is mainly used to test the penetration of firecrackers, etc. Now it is used to test the explosion range and the penetration force produced by the explosive lead. It is just right! "
"And this thing?"
"It really weighs about the same as a real person and is about the same height!"
"Well, the quality of the cotton armor is very good!"
…
Cao Bianjiao and others came forward, touched the armor they were wearing, and held it to test the weight. There was a lot of discussion.
"Dean Xu, this is really good!"
Chongzhen also stepped forward to take a look, his eyes full of approval.
"Your Majesty, this is all Mr. Bi's idea! Mr. Bi said that it's just a shooting target that doesn't feel good. This kind of scarecrow is more visual.
If the sergeant often uses this training, he will feel better psychologically on the battlefield in the future. "
"Okay! This idea is very good and must be rewarded. Your Firearms Research Institute will reward you according to the reward rules.
Don't be embarrassed to reward just because you are a senior member of the institute. What's yours is yours! "
"I understand!"
"Okay, let's test it!"
After Chongzhen gave the order, Cao Bianjiao naturally lifted a half-kilogram simple grenade.
"Cao Bianjiao, what are you doing?"
"Xiao Cao, put it down!"
"Commander Cao, please wait!"
As soon as Cao Bianjiao took the grenade in his hand, the voices of Zhou Yuji, Huang Degong, and Sun Chuanting rang out at the same time, and then they stepped forward and grabbed Cao Bianjiao.
Regarding the three people's reactions, Cao Bianjiao asked doubtfully, "What are you doing?"
"What are you doing? What did you say you were doing? You just threw two of them, now it's time for us!"
"That's right, you are a solitary eater, and your behavior is unacceptable!"
"Stay there and let us feel it!"
At this moment, Cao Bianjiao finally came to his senses and looked at everyone sideways: "This kind of thing naturally needs to be tested by experienced people.
Among so many people, I am the only one who has thrown it, so I am the most suitable! "
"Xiao Cao, I noticed that you went crazy this time. If you throw something away, wouldn't we throw it away?"
"Xiao Cao, your uncle Cao Wenzhao is here, how dare you say that?"
…
"Everyone, please listen to what this dean has to say!"
Seeing everyone arguing, Xu Guangqi said: "This is about twenty feet away from the circle surrounded by scarecrows. Are you sure you can throw it into the middle?"
"this……"
Everyone was speechless.
Throwing it twenty feet away was not a big problem for everyone, but if they wanted to throw it twenty feet away into a circle with a radius of one foot, they were not sure.
If there are enough, everyone can practice more, but now there are only two of each kind, how to practice?
"Come on, stop fighting, we don't have a share!"
Sun Chuanting smiled bitterly, and then looked at Xu Guangqi: "Dean Xu, how do you test it?"
"Put it directly in the middle, and you can just light it and run away! After all, it is just to test the explosion range and lethality, not to measure the accuracy!"
Everyone was stunned and smiled, but the simplest truth was ignored.
"Commander Cao, you are young and can run fast, so you better go!"
"good!"
Cao Bianjiao did not hesitate at all to Xu Guangqi's proposal.
With three breathing leads, he can run dozens of feet.
"Let's test the one wrapped in cotton first. You put this thing in the middle of the circle and it will light up instantly!"
boom!
After a dozen breaths, there was a loud noise, and the half-pound improvised grenade exploded, causing a large ball of fire. The scarecrow was shaken back and forth.
boom!
The one-pound improvised grenade exploded, causing the scarecrow to roll several feet to the ground.
boom!
boom!
…
The two-pound improvised grenade exploded, sending the scarecrow flying out, burning in mid-air.
After Xu Guangqi and the others recorded the test results, they continued to do the remaining two types.
boom!
boom!
In the testing valley, there were constant roars, thick smoke and fire rising into the sky, and rocks and soil splashing everywhere.
Two quarters of an hour later, all tests on the simple grenades wrapped in cowhide were completed.
The power was much greater than that of the cotton-wrapped grenade, especially the two-pound simple grenade. The power of the explosion made everyone tremble when they looked at it.
The scarecrow was shaken and flew up to a height of one or two feet. Before it fell, the scarecrow was dismembered.
When it fell to the ground, the cotton armor was completely broken, and arms and legs were missing.
After they removed the cotton armor, they found that the lead had penetrated about half an inch into the wood inside the scarecrow, and there were cracks around the small holes.
"Wait a moment!"
Two quarters of an hour later, when only the last two-pound grenade left in the test of the simple grenade wrapped in hemp rope was stopped by Chongzhen.
Under everyone's doubtful eyes, Chongzhen said: "With the remaining one, let's test the effect of breaking the city wall?"
"You don't have to actually blow up the city wall, just blow up this wall. As long as it can have an effect on this wall, it's just a matter of quantity and size. If one is not enough, then ten or hundreds."
Everyone was stunned. They did not expect that the emperor would have such an idea. Xu Guangqi said in a deep voice: "According to what your majesty said!"
