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Chapter 1946: Solve the problem

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    Just in front of Li Yunlong's eyes, Qin Baoshan took over a thin and long bullet core, and stuck it inside the bullet holder, thus forming a whole.

    Li Yunlong is still very smart. When he saw this, he immediately understood something, and said to Qin Baoshan: "You want to let this kind of thing be fired as a bullet.  Gas in the back. But when it flies out, how does this thing separate?"

    After flying out, with such a burden, it must not be able to fly far.

    Li Yunlong is really amazing.  Although he has no knowledge of physics, he is able to consider problems from a practical standpoint.

    "If there is nothing wrong with my design, after flying out, the two pieces can be automatically separated under the push of the air, so if you fight in the future, if you use this kind of shells, you must be careful.  Take back those flicks that flew out."

    This thing is not a whole, but two parts. After being fired, it can be separated, leaving only the shells inside flying out. This thing landed near the muzzle, so it can be retracted. Of course, it must be  It cannot be reused, but it can be returned to the furnace for re-smelting and reused as aluminum water.

    The Eighth Route Army lacks resources.  This kind of shell, which was made by Qin Baoshan for testing, cannot be equipped on a large scale. After all, in this way, the power of the armor-piercing shell will increase a lot, and it can even be said to be overpowering.

    Aluminum alloy is very precious, and it is a bit of a luxury to make such a thing.  So after using it, you must pick it up, and there is another advantage in this way, even if the kid finds out that the Eighth Route Army has a strange anti-tank weapon, and they also obtained this kind of flying warhead, but  They will definitely be confused. They don't know what the principle is. How did this thin and long warhead be fired from the shell?

    In fact, it is a small invention, but for this era, it is a great technological progress.  People in this era would never think of this. In fact, in order to pursue and study the technology of this type of shell-piercing armor-piercing projectile, there are countless artillery designers' efforts and sweat, and it took many years of trying to create it.

    ?With the military technology level of the Eighth Route Army, it will definitely not reach the level of later generations, but Qin Baoshan's requirements are not high.  As long as it can increase the power by 50% compared with this ordinary shield-headed blunt-nosed armor-piercing projectile, it is enough.  In this way, the little devil can go from the front of the tank to the back of the tank, and can give the little devil a candied haws, which surprises the little devil.

    Li Yunlong was also very surprised when he heard Qin Baoshan's narration. He knew that Qin Baoshan was a person who was good at creating miracles, but he did not expect to be able to create so many miracles.  How did his brain grow?  How could so many advanced things be invented?

    Li Yunlong sighed in his heart, there is really nothing Qin Baoshan can't do in this world!

    Just when Qin Baoshan was still studying how this advanced armor-piercing projectile was stuffed into the propellant at the back, someone came to him again.

    Ma Sanbao held a complete set of pistons, connecting rods and crankshafts in his hand, and said to Qin Baoshan: "This is a product made in our arsenal, and it is basically satisfactory for use, but there is still an important problem.  That is, how to solve the lubrication problem of the bearing bush here?"

    Speaking of piston engines, the principle is actually very simple.  The piston reciprocates to complete the entire cycle.  When the fuel burns, pushing the piston is the source of power.  The movement of the piston is reciprocating, but the engine is rotating, so it needs to be converted by the connecting rod and crankshaft.  The part in contact between the connecting rod and the crankshaft has a very harsh operating environment.  Therefore, in addition to the need for special wear-resistant materials to manufacture the bearing pads, it is also necessary to lubricate the bearing pads.

    In ordinary engines, there is a special lubricating oil circuit in it, so as to complete the lubrication.  But the machining of this oil passage is very difficult, and a channel needs to be drilled on the crankshaft.  At the level of the Eighth Route Army here, it is very difficult to do.  In this way, the bearing bushes cannot be lubricated.  If it is installed, within a few turns, the bearing bush will melt due to friction and heat. In the technical terminology of the engine, this is called a hugging tile, and the engine will not be able to rotate.

    This set of bearing bushes was brought by Ma Sanbao and the others, and the Eighth Route Army could not produce them by itself.  Of course, if the usage is large in the future, you can also order directly from the United States.  Just slightly modify the dimensions to match the bearings used on their aircraft engines.  After all, this thing is a fragile item.  However, crankshafts and connecting rods cannot be ordered in large quantities. If the production cannot meet the requirements, it will be very difficultDifficult to deal with.

    I don't know how many technical problems have arisen, and every time they can't solve it, they like to come to Qin Baoshan.  Qin Baoshan can always come up with a solution to the problem.  Of course this time is no exception.  When seeing this situation, Qin Baoshan said: "Since forced lubrication doesn't work, let's simply change it to splash lubrication."

    Forced lubrication, that is, through a special lubrication pipeline, the lubricating oil, that is, the engine oil, is brought to the appropriate place.  If it can't be achieved, then there are simpler ways to do it.  Splash lubrication is one of them.  This method is to directly hit the oil surface of the oil shell below during the movement of the crankshaft of the engine, splashing the oil.  In this way, every time the crankshaft falls, there will be a splash.  In this way, the oil is continuously splashed, and it can fall to the bearing bush.  It's just that this method is not mainstream, and engine designers who pursue perfection will use forced lubrication.

    ?But the Eighth Route Army didn't care. For them, the problem of whether they were available or not was settled first.  So now that Qin Baoshan said this, Ma Sanbao agreed.

    If this is the case, it may cause a certain power loss, but also, this treatment will also make the structure of the engine simpler, and for them, manufacturing will be easier.  They were only limited by their previous experience, and they couldn't think of this simpler method, but Qin Baoshan could see the essence at a glance and easily solve the problem for them.

    "By the way, how long will it take for our engine to be built?" Qin Baoshan asked.

    "Let's take half a month. If it goes well, we can test drive in half a month." Ma Sanbao said.  (Remember the site URL: www.hlnovel.com
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