Hello guys! Today is a small analytical video. Brought his first jet engine. Firstly for comparison, and secondly for you to understand how hard it will be for me with this “baby.” How much it will not just make it work. The fact is that when I was making my first jet engine … as you can see, it has much larger dimensions. It is just huge compared to this. … there were unreal many skeptics, and almost none of those who thought about it, did not believe that he will earn. Then people did not believe that there would be some kind of traction. And the measured thrust is 5.5 kilograms. But he and more can give out, if more fuel to him to submit. And unlike a small one, it does not stall. At the moment, small turbo jet engines (3 pieces), which i did, they don’t want to run. But he also didn’t want to start up at once. Skeptics did not believe in traction, nor in the fact that it can be put somewhere. I put it and raised the plane to the sky. Made with simple materials. Previously, I did not have Inconel, improvised turbines. Such as here inside. This turbine has never been roasted. Let’s roast. I have a lot of experimental ideas. Well, here everything is mega roasted and works well. Although I had “brought it to mind” for a very long time (worked on it). But this engine almost immediately turned out to be working. Combustion chamber, evaporative system, everything worked fine. I just did not know how to run, this time. It’s possible here, too, because it must be run differently. The second. There are still constructive nuances were- he wedged. And I had to constantly refine it. And then, at the beginning, the nozzle I did not work. So that it does not wrinkle, I had to strengthen everything inside. I had to weld a 2 mm stainless steel plate. And so did the body here, see? Here the dots are welded corners from the inside, because the body is red-hot, becomes ductile and overheats. Since sizes vary greatly, I have a harder time trying to run. The run out of the rotor, as everyone noticed, is very small. Once and all. And it instantly stops at high speeds. That is, it is impossible to unleash like this compressor, and perform any manipulations on the launch, feed kerosene or feed gas. He instantly stops, the mixture stops burning because the air is not supplied and he goes out. Everything. Here the situation is different. Here the rotor is heavier. He has more inertia. And it rotates for a while, you can make manipulations. Well, with a large engine, I still started the turbo starter (on the channel). There was generally just everything, the rotor rotates very very long. All this guys, because of inertia. This is not due to the fact that the bearings are not so … 90% problems in inertia. The smaller the shaft, the easier it is and he stops faster. For many, this, of course, is not a secret. But I think that it needs to be clarified. I want as many guys as possible began to understand the device jet engines. Therefore, I will try to explain everything. It is a pity that I made all 3 combustion chambers identical. It would be necessary to at least drill holes of smaller diameter. Because the first instance of the engine does not want to run, And most likely, other engines will also behave. But I have suggestions on what to do for a run. In the next video (03/23/19) we will experiment. The caption: the video is scheduled for Saturday. In the next video, try ceramic bearings. At the moment, these bearings are. It has only ceramic balls. And steel clips. This is what the inner ring of an all-ceramic silicon nitride bearing looks like. Here are the balls. I buy them separately for modernization. Well, here I still have such options Ceramic beads and rings but the separator either with fluoroplastic or with a fluoroplastic-like material made. It is not good, this can not be used. Put the usual, without separator, this type only entirely from silicon nitride. And we will see. There is a high probability that they will scatter, crack. Because they are very very fragile. Rings. But I really want to see. If I do not do this, I will not sleep well at night. And I will think all the time, why haven’t I done it? For some reason everyone thinks that i just reduced in size. I have drawings. Drawings of three turbojet engines of different sizes. But they are all about that size. Not that, you know? And many people think that I reduce everything thoughtlessly. Here I take the drawing, for example, and proportionally reduce it. No, friends, not everything is so simple. I know that it is impossible to laugh in proportion. Nothing will work. For example, if we proportionally decrease 2 times this hole, the flow area is clearly not reduced by 2 times. The inscription on the video “Area” Much stronger it will decrease. Therefore, I “push off” from the inlet. That is, this is my method. Turbojet engine inlet This is one of the most important values. The area is taken. And regarding this area, I think: all holes, the relative position trying to figure out Because the engine, though big here, but the length of the combustion chamber is not great. It is all time to burn. And I noticed that in my little engine with those little tests of mine everything burns perfectly inside. There is a problem with kerosene. Kerosene does not want to evaporate. Soon we will come to this. Again, some viewers are mistaken that these thin tubes, from which I made nozzles, these are the nozzles themselves and they spray. Nothing like this, it is not, friends. Now I will explain to you how the evaporative-type combustion chamber works. So, recently you saw a micro jet engine device. The combustion chamber. Nozzle apparatus. That’s where I built the tube. Grind out. And they inserted into them thin tubes through which fuel is already supplied. See how it works. Here is the compressor. Here is the combustion chamber. Here she is. Through these holes, air is drawn inward. Then I welded the evaporator tubes from behind. Here they are. And also the air goes like this, it goes around … and served here, goes into the combustion chamber. Air! Through the internal holes, air is supplied, through the outer holes. And through the evaporator tubes. And the thin tubes themselves, that go along the combustion chamber like that they enter the evaporative tube a little. Here it is. Still. And they serve a jet of liquid fuel. Or gaseous fuel. I made them too thin for gaseous fuels, so the gas I can not spin the engine and understand it works or does not work. I already heated the balloon … But not yet. In general, fuel is supplied to the evaporator tube. Since we have fire inside, everything burns, then this tube heats up. We can say that it is hot. I saw them in a red state there. And this liquid fuel, again, because the walls are red, hot, it evaporates and turns into steam. That is, here nozzles are generally no need. It turns into steam. It is better than any injectors. And here comes the fuel steam, together with the air. And there is a hotbed of fire, which does not go out. And he continues to burn, in the opposite direction goes. It enters the turbine through the nozzle apparatus. Starts to unwind it. Seems like a simple action principle … But still I see a misunderstanding. Just people probably do not understand. The air comes here … gets into the phone … then it turns around and goes in the opposite direction … The same air comes from all sides (not only on top). The air is also from the inside. I hope, now it is clear to all? While drawing, I remembered that there is another misunderstanding. No, people will not understand that a candle, or a spark, or something else, it is only needed to ignite the hearth inside. And then burning is maintained independently. This is not like an internal combustion engine. In the internal combustion engine, the spark must constantly ignite a mixture at a certain moment, the mixture burns … And because of this, useful work happens. Here, as in a conventional burner. Here, set fire to a spark. And everything burns fine. And we don’t need to spark anymore, so it burns. Or like this. And here it is badly set on fire. So we also do not need. A small engine I tried to set fire to RC candles. But whether I chose the wrong position, or something else, but this red hot platinum was not enough to set fire to gas. Therefore used a spark. And on this engine everything was fine. There is exactly the same candle here. And we energize. Like this. And everything starts working there. Begins to set on fire. Propane ignites well. So arranged on the factory engines. There is such a system with such a candle. The spiral is only slightly pulled out so it sticks out a little further. Therefore, I had a desire make a little spark candle from this one. Will it work out? We’ll see. Because you need to use some kind of ceramics. Or mica or something fire resistant. Because in the combustion chamber is very high temperature. Now I use the Chinese module for ignition. I like him. And he can work for a long time. And these modules are short-acting. I do not use them. And here I put the button. This is the button. And a battery. At 12 volts. And you can start. Like this. Such a powerful spark. She has already burned something. Burned isolation and decreased. I have one module burned out. Most likely burned due to the fact that everything burned. A short circuit has occurred. And worked for a long time in a closed state. Therefore, the module could not resist. I thought it was easier for him to burn … that is, there are many tens of thousands of volts. And it can burn inside. Punches the coil … And she is somewhere there produces a spark. But not here, does not reach. There is no spark in the street. Overall, this system works great. Ignition instant. Very confident podgig. I told you this, not to be smart. I want you to understand the course of my thoughts. And they understood what I was doing on the test. I did not always have time to clarify. And for every new test I do not want to explain anew. For this I explain. There will be many different tests, and to make it more interesting and understandable, I made this video. The next video will be released on Saturday (03/23/19) I hope the questions on the operation of the engine removed. The following video will be completely dedicated to the launch. Who was interested, subscribe to the channel. Click “Like”. Bye everyone, see you.