Bright Sword starts with the grenade flat.

Chapter 133 Mortise and tenon structure

The mortise and tenon mechanism passed down for thousands of years did not disappoint Liu Xiu. This was because Liu Xiu didn't hear the squeaking sound when he drove the plane again to reach 400 kilometers per hour.

Now that there is no more squeaking sound, Liu Xiu also plans to continue testing how much stronger this aircraft with a mortise and tenon structure can be compared to the previous aircraft that was fixed with nails!

Seeing that the pitot tube on the plane showed that the plane's speed had exceeded 500 kilometers per hour, Liu Xiu couldn't help but clenched his fist and waved excitedly.

You must know that a speed of more than 500 means that Liu Xiu's fighter plane can catch up with the speed of the little Japanese fighter, and there is no need to worry about the little Japanese fighter running away.

It wasn't until Liu Xiu increased the speed of the plane to 550 kilometers per hour that he stopped accelerating. This was not because Liu Xiu didn't dare to accelerate, but because the speed had reached the level that the engine's horsepower could provide. The maximum speed is reached. If you want to increase the speed further, you must develop a more powerful engine.

As for the mortise and tenon that greatly enhances the strength of the fuselage, you have to talk about ancient woodworking. Since metals were scarce raw materials in ancient times, mortise and tenon joints refer to various processing on wood without the help of Other tools use the material properties of the wood itself, and the two ends of the nested and interlocked wooden parts are processed into tenons and mortises to make them nested together firmly, a special joining method.

The advantage of this combination is that there are various forms of mortise and tenon. Usually, what kind of tenon should be equipped with what kind of mortise and tenon, and the size and scale are very precise and cannot be missed. Therefore, the furniture parts of the mortise and tenon structure are integrated and the products produced are durable.

However, it has advantages and disadvantages because it is difficult to process, so the production efficiency is low. Therefore, the price of the same material is different between the nailing method and the mortise and tenon joint method.

Nail joining is a shortcut method used in modern production to improve production efficiency. It directly uses various nails to join the furniture parts together.

The advantages of nail-bonded furniture are also obvious, such as easy processing and high production efficiency.

However, the shortcomings are also great. In terms of firmness, they are often not as good as mortise and tenon joints, so the average service life is also lower than that of mortise and tenon structures.

This is just like the wooden plane flown by Liu Xiu. The appearance of the front and rear fighters is almost identical, but one can easily break through 500 kilometers, while the other automatically disintegrates in the air before 500 kilometers.

"How did you feel about this flight?"

As soon as Liu Xiu got off the plane, Liu Qin couldn't wait to ask Liu Xiu, and Liu Xiu replied with a smile:

"This thing passed down from our ancestors is indeed much easier to use than nails. If the aircraft's horsepower were not low, I feel that it can break through 600 kilometers per hour without any problem!"

Although laymen cannot see much between the two, and they cannot see much change on the surface, they are quite different on the inside.

After Liu Qin heard Liu Xiu's words, he touched his chin and fell into thinking. After coming over for a while, Liu Qin said:

Normally, the firmness of this type of nail joint is closely related to the length and shape of the nail body, the strength of the nail itself, and the diameter of the nail. Therefore, if you want to firmly adhere furniture, you must consider these aspects. Mortise and tenon joints are used to connect furniture components. The size and shape of the mortise (chisel) and the tenon (mortise) must be exactly the same in order to be properly assembled. Furniture uses exquisite and accurate mortise and tenon structural joints to closely combine the various parts of the furniture together to form a strong and solid whole. The tenon itself is a combination of furniture parts. The material is the same, and the tenon and the furniture have the same life.

"You can consider adding a turbocharger. It can not only increase horsepower, but also improve high-altitude performance. However, a turbocharger is difficult to build, and I'm not sure whether it will succeed!"

Liu Xiu smiled and said:

"Now this can already deal with the Japs' Type 1 fighter jets. Of course, it would be even better if it could be developed!"

But from the bottom of his heart, Liu Xiu still hopes to get the turbocharger out. After all, if the speed of their fighters can exceed 600 kilometers per hour, they will not be in trouble against the US Army's Mustang fighters on the battlefield to aid Korea in the future. In a completely passive and beaten situation. After confirming that the mortise and tenon structure was feasible, Liu Qin issued an order for mass production, just like he had produced twenty-five rotorcraft in the previous ten days.

However, in terms of manufacturing difficulty, the manufacturing structure of fixed-wing aircraft with mortise and tenon structure is much more difficult than that of rotary-wing aircraft.

Although the previous gyroplanes also used some mortise and tenon structures, the gyroplanes only had a long propeller, and the rest was a tripod fuselage pieced together with a few thick wooden sticks.

For a fixed-wing aircraft with a mortise-and-tenon structure, it takes a lot of time to make just the wings.

Of course, Liu Xiu also started teaching fixed-wing aircraft. Although his special forces members had all flown rotorcraft before, the difficulty of piloting this fixed-wing aircraft was much higher than that of rotorcraft.

Because it is not like a gyroplane that can land safely even if the engine stalls in the air.

If a fixed-wing aircraft is slightly wrong, it may result in a crash and death.

Of course, Liu Xiu now does not teach one by one but teaches in groups.

Naturally, Liu Xiu's first priority was to teach people from the special operations team.

"Pull the aircraft's control stick backward to control the elevator at the tail, and upward to control the aircraft's nose to rise... Okay, I've already said the six points about aircraft control! You go back After that, everyone should write down for me what I just said! I will do a spot check tomorrow morning!"

Monk Wei and others' eyes widened at Liu Xiu's request. After saying it once, they had to write down exactly what Liu Xiu had just said. They thought they were geniuses who could never forget what they heard. !

Duan Peng immediately objected:

"Captain, this is too difficult for you! Can you say it again! I haven't even remembered what you just said!"

However, Liu Xiu immediately refused Duan Peng's request:

"What I am testing is your memory ability. As the elite of the Eight Route Army Special Forces, we must have the ability to remember photographs. Otherwise, how can we remember the terrain on a complex battlefield and how can we use the terrain to ambush the enemy? If If I can’t remember or write it down, I’ll run ten kilometers tomorrow morning while memorizing it!”

After that, Liu Xiu ignored the bitter faces of the special forces team members, turned around and left.

Liu Xiu had a rare dream that night. In the dream, Liu Xiu led the New Third Regiment to fly thousands of planes and directly suppressed the American aircraft so that they could not lift their heads and easily seized the air supremacy!

But soon Liu Xiu woke up from his dream, and then Liu Xiu realized that he had actually transitioned from boyhood to adolescence.

Yes, Liu Xiu has gone through the threshold that all boys have to go through!

(End of this chapter)