Wooden boats rely on oars, as do large ships, and now there are larger cargo ships, which can be proppelled by people with their feet on the bottom of the boat.

However, how heavy is the steel battleship, how can it be rowed with manpower?

Xia Hongsheng suddenly realized this problem, and his heart chuckled, and he suddenly felt like falling into the abyss. And as this question came to mind, more questions suddenly appeared, filling Xia Hongsheng's mind at once.

Of course, a small boat made of steel can still be propelled by manpower, and although it can be formed from a single piece of thin steel plate, it is not possible to make a large ship. The volume of a large ship is not something that can be beaten into a piece of iron. Not to mention that few people can move with their own strength!

How to weld in the middle? How to seal? How do you resist water pressure after entering the water? How can I prevent corrosion? How do you provide the power to propel a large enough steel giant ship to move quickly? How to design a control structure that would allow such a heavy and huge warship to be flexibly steered to sail?

The problems are far more than that, but just these questions that suddenly popped up in Xia Hongsheng's mind were enough to make Xia Hongsheng's Hongda goal of building a big ship go to naught.

Xia Hongsheng was excited, excited, and his brain was congested for a while, just thinking about making a steel fleet to sweep the four oceans and colonize the seven continents in Datang, but he forgot that there was no necessary basic scientific and technological support, these can only be utopian!

For a while, Xia Hongsheng was like a thunderbolt, standing there fixedly, full of amazement. It's like a child who has finished all the New Year's cannon flowers, looking at the crimson all over the ground. The heart is full of loss.

"Childe?" Yue Xian saw that Xia Hongsheng suddenly froze, and he didn't react for a long time, so he called softly.

Xia Hongsheng was stunned. looked at Yuexian, looked back at the masters in the workshop, took a deep breath, tried to calm down, and said, "Yuexian, I made a mistake. I'm afraid this ship won't be able to do it for the time being. ”

Yuexian looked at Xia Hongsheng. Although I don't know what Xia Hongsheng is referring to, I know that Xia Hongsheng has encountered a setback.

Yuexian thought for a moment and said softly, "Anyone who wants to establish." Isn't there any danger? The road ahead is bleak, how can there be a smooth road? Is there less trouble for Childe? No, they all came. ”

Xia Hongsheng nodded: "That's what I said." Let's go! ”

I explained it to the shipbuilders, but I didn't tell them the truth, after all, I made it in the boat first. The big ship can't be done. These sampan boats can be made. There are small ones. Naturally, I will slowly study the big ones.

After leaving the workshop, Xia Hongsheng went back and changed his clothes, and saw that it was still early in the afternoon, so he didn't stop long. At this time, the military academy was the time for teachers and students to take a lunch break, so they went to the military aircraft workshop first.

Xia Hongsheng did not have any official position in the military aircraft workshop itself, and his status was somewhat similar to that of a technical adviser in later generations, so even if he was removed from his official position. I still have to see what is in this military aircraft workshop.

After two years of development, the military aircraft workshop is no longer the workshop it used to be. Instead, it has become a complete and comprehensive place for technology research and development and experimentation.

From the improvement or research and development of an instrument or technology, to the conduct of various experiments, to the final assembly line for mass production, these are all in the military aircraft workshop. This has caused redundancy in the military aircraft workshop.

Xia Hongsheng thought about separating the assembly line workshop, and then cutting the military aircraft workshop according to the use of equipment or technology. I mentioned it to Li Lao Er before, but Li Lao Er did not agree -- after realizing the importance of keeping the advanced technology secret, Li Lao Er attached great importance to the secrecy work of the military aircraft workshop to the point of being almost paranoid.

Even among the courtiers, there were still many who did not know that there was such an institution. I only know that there will always be something that I haven't seen before, but I don't know where this thing comes from.

The identities of all those who worked in the military aircraft workshop for several generations were checked, and their families were all placed by the imperial court, on the one hand, to prevent others from threatening them with their family members to leak secrets, and on the other hand, their family members were also hostages of Li Lao Er to prevent them from leaking secrets.

"Master Hou!" As soon as Xia Hongsheng arrived at the door, he didn't know where a few people came out.

"Oh, you've worked so hard!" Xia Hongsheng said to them: "There are no suspicious people around recently, right? ”

"Hou Ye, rest assured! Let's take turns staring at it day and night! The first person saluted Xia Hongsheng and replied: "Some time ago, the Hou Ye shouted that we should beware of Xue Yantuo and the Turks, let's pay more attention, and there is no one who can do anything. ”

"That's good." Xia Hongsheng nodded, fortunately Li Lao Er is not a Tian Khan now, fortunately there are no Tang envoys from various countries, and fortunately Li Lao Er has realized the importance of technical secrecy.

There are a large number of spies, special combat personnel, and his own spies stationed in the military aircraft workshop, and these people are monitoring the people in the military aircraft workshop and outsiders, and they also supervise each other. Xia Hongsheng guessed that there were even craftsmen who were mixed in.

"Master Hou! You're here! An old man appeared in front of Xia Hongsheng: "You haven't been here for a while!" ”

"Lao Cheng, have you made that thing?" Xia Hongsheng said to the old man with a smile.

The old man suddenly became a bitter gourd face: "Alas! It's not that the old man can't do it, it's really incredible! Master Hou, isn't the old man disobedient to you, tell me, let's get a wine jar, fill it with gasoline and throw it with a trebuchet, and then shoot a rocket over, won't it just get a little spark! This, spewing out gasoline while burning, even if it can be made, it will burn yourself! ”

"Hey, didn't Ben show you that?" Xia Hongsheng said: "Didn't you do the siphon experiment? If you open the opening to the crooked part of the siphon, you can spray gasoline out? ”

"This, Master Hou, this is easy to say, but the old man took someone to try it several times...... It's, it can't squirt far! The old man said helplessly.

Xia Hongsheng thought for a while: "This is a problem, spraying too close is easy to injure yourself by mistake, and before you burn the enemy, you will be involved in it first." ”

"Ahh Old man Cheng clapped his hands: "Master Hou, the old man can't think of a way even if he wants to break his head, otherwise you should show me the way?" ”

Xia Hongsheng scratched his head, how did the Byzantines put Greek fire on the bow of the ship, and it could spray so far to burn the enemy's warship? (To be continued.) )