"Cousin, morning!"

"...... are you" Tang Ping looked at Li Tai, who was wearing glasses and holding a cup of coffee, and asked uncertainly, "Didn't sleep all night?" ”

"Well, this refreshing thing called coffee that my cousin said is really good, after drinking it, I really don't feel sleepy!"

Li Tai said, pointing to the five or six instant coffee bags torn on the table.

Tang Ping was speechless for a while, he didn't plan to give Li Tai this thing to drink, it was when Li Tai was asking when he drank it that day, so he mentioned it casually.

Yesterday, Li Tai was reading a book downstairs, and when he went upstairs to rest, he asked him to rest quickly, and this little fat man promised to be good, but he actually got so much coffee in the store to drink in one night.

I just came into contact with coffee, and it was strange that I could sleep with such a large amount.

The current Li Tai is like this, he didn't sleep all night, not only was he sleepy, but he seemed a little excited.

"Cousin, I have analyzed the reasons for the unfavorable battle in Fort City this time."

was going to drive him to sleep, but when he heard Li Tai say this, Tang Ping said curiously: "Oh? Tell me about it. ”

"First of all, the problem of the Datang Shenwei cannon being affected by the weather." Li Tai lifted his glasses: "At the beginning, my design has always been for the use of our Datang siege warfare, I thought about making the range of the Shenwei cannon farther, more powerful, and easier to break through the enemy's city walls, so that the Shenwei cannon will become bigger and bigger, and it will be more and more restricted." ”

"In addition, this kind of front-loading gunpowder has to be poured into the gun from the muzzle, once it is rainy, the inside of the gun barrel is damp, which will affect the excitation."

Tang Ping knew all this, and he asked, "Then have you figured out the problem to solve?" ”

"Well, when we defend, we don't actually use such a big Shenwei cannon, the number is too small, although the power of a single shot is strong, but in fact, the deterrent power is far greater than the actual lethality, I thought about it for a while, it is better to make the cannon smaller, increase the number to improve the coverage, to achieve the purpose of strengthening the lethality."

As he spoke, he pulled out a drawing he had drawn: "I wonder if it would be better if the cannon was made smaller and specifically aimed at sergeants." ”

Tang Ping looked at Li Tai's drawings and felt as if he had forgotten something important, but he couldn't remember it for a while, so he could only say, "Is there anything else?" ”

"And what you said about the way Xue Rengui and them attacked from the air this time, I think this is the most powerful in the future. Because when you are in the heavens, people can't attack you, but if you can strike at the enemy infinitely, you are invincible. ”

Although Li Tai had never been in contact with the Air Force, he immediately saw the advantages of the Air Force.

Tang Ping nodded and admitted: "Yes, it's just that the hot air balloon now has too many shortcomings, the liftoff is slow, there is no way to turn, and the direction of movement is also affected by the wind direction." ”

"So I thought about it, to use this in real combat, we just need to modify it according to its defects."

Li Tai snapped his fingers: "First of all, it's a matter of slow lift-off, because we are using hot air now, and hot air is lighter than air, so he floats into the air, but cousin, there are many kinds of lighter than air gases in the chemistry book you gave me, if we can make lighter than air, fill it, and add it to the balloon when we want to use it, won't the balloon be directly lifted into the air?" ”

Tang Ping looked at Li Tai blankly, is this the difference between a scholar and an ordinary person?

"What gas do you think is better?"

"I took a look, helium and hydrogen are good, but hydrogen is a bit dangerous, or helium is the best, I read the book that you can use the membrane permeation method to make nitrogen, if my cousin can find this kind of membrane, we can try to make helium."

Li Tai actually said the most standard answer in one bite, you must know that many hot air balloons we use now are filled with helium, and even he knows the membrane permeation method, and even thinks about how to make it.

Tang Ping felt that he was used to Li Tai's demons, and now he knew that his pattern was still small.

"As for controlling the direction...... Li Tai picked up a balloon on the table that he found in Tang Ping's shop, puffed up his fat cheeks to blow up the balloon, and then let go of the open.

The balloon flew out with a thud.

"Cousin, you see, when the balloon is blown at the back, it flies in front, and if we add something under the balloon that can blow wind or jet in the back, then wouldn't the balloon be able to fly in front? If we use one more rudder-like thing to control the direction, then the problem is solved. ”

After listening to Li Tai's words, Tang Ping really doubted that this kid had studied something called an airship thoroughly, wasn't this what he said about a helium airship?

"What do you think of this name?" Tang Ping asked. "Name?" Li Tai was stunned: "Isn't it a hot air balloon?" What is your name? ”

Tang Ping took the pen in his hand and drew on the paper: "Look, our hot air balloon is a round ball, and you have also learned the resistance, you should know that the resistance will be very large, so we can make it look like a ship, and then call it an airship?" ”

"Cousin, you're so smart!" Li Tai looked at Tang Ping with a look of surprise.

Tang Ping gave him a blank look: "Bolt Q, but I think people like you say that I am smart and are scolding me, and this thing you said already has it in our world, so it is called an airship......"

"Next time, I'll ask someone to see if I can make a smaller one, and bring it to you to study."

Now think about it, wasn't the first flying machine of mankind an airship? If you can really build an airship, what are those East Vietnamese sailors? Lao Tzu burned it all for you from above!

It was at this time that Tang Ping finally remembered what an important thing he had forgotten.

Asked Li Tai to wait, then ran to the back warehouse, and after a while, he took something and put it in front of Li Tai.

"Cousin, what is this?" Li Tai picked it up, and was slapped on the back of his head by Tang Ping.

"Don't aim the tube of this thing at people, this is called a gun!" This was the spear that the pangolin used to point at Tang Ping at that time, and after he confiscated it, he didn't hand it over, after all, he couldn't say it clearly, so he simply threw it to Datang.

Li Tai said just now that he had such a smaller cannon, he remembered that he still had such a thing, although this was just an earthen shotgun made by the little brother of the pangolin, the range was not far, and the power was not great, but it was no problem to use it as a reference.

"You can also think of it as a shrunken cannon, which is specially designed to hit people."

Li Tai's eyes lit up, and the whole person looked even more excited: "Cousin, let me study it." ”

Looking at Li Tai's appearance, Tang Ping remembered that he hadn't slept all night, and he was really afraid that he would die suddenly by playing with himself.

"Old Cui Lao Du, send Li Tai to sleep, if you can't sleep, you will be knocked out! And later, in the store, when I saw him drinking coffee again, I was also fainted! ”

82 Chinese Net