Chapter 1688

Because of this, although tnb-2e and tnb-2b look very similar in appearance, the two UAVs are essentially different in terms of materials, technology, avionics and performance.

Just like Jetta and Passat, although they are the same dolly face of Volkswagen for ten thousand years, in essence, the two models are not the same thing at all.

This is the difference between tnb-2e and tnb-2b.

Take the materials used in the two models for example. Tnb-2b uses the most common aviation aluminum alloy, and its source can be traced back to the aluminum alloy used in the old J-6.

But now China's manufacturing capacity of traditional aviation aluminum alloy in sheet metal, bending, cutting and machining is far from that in the 1960s and 1970s. Therefore, this kind of traditional aviation aluminum alloy can be made thinner and better flatness.

However, no matter how optimized, the essence of traditional aviation aluminum alloy will not change, that is, compared with those lightweight modern high-end aviation materials, the overall weight is not only larger, but also the structural strength is very general.

This also leads to the poor data of tnb-2b in payload and range. In addition, the equipped wd-41ml-200 turboprop engine is only an entry-level product of this series of engines, resulting in average overall performance.

Tnb-2e is different. The keel is made of high-strength aluminum lithium alloy, some supporting structures and fuselage skin are made of carbon fiber composites, and the wing, horizontal tail and vertical tail are made of aramid fiber honeycomb structure composites.

These materials are not only expensive in themselves, but also the equipment used to process these materials is not cheap.

Take the cutting tools on the most basic machining equipment.

If you want to process carbon fiber composites and aramid fiber honeycomb composites, the shared tool is the most basic configuration.

After all, the traditional tools used for metal machining are not suitable for the processing of composite materials, because composite materials not only have high strength, but also are easy to be layered and drawn in the processing process due to their own characteristics.

Moreover, if the tool is not useful, it will also lead to the deformation and burning of the processed materials, and finally lead to complete scrapping.

Therefore, composite machining tools are a key basic factor for producing qualified composite parts.

In this regard, only Loma of the United States and China's take-off are in a monopoly position.

Yes, China Tengfei is not only a global leader in the production of composite materials, but also an invisible champion in the field of professional processing of composite materials.

For example, a special drilling tool for machining carbon fiber composites.

When taken out alone, it is almost no different from ordinary alloy tools. They are similar to cruciform turning heads, spiral extension, emitting metallic luster, and have nothing unique.

However, if you put it under a high-power microscope, you will find that the cutting edge on the carbon fiber composite prop is essentially different from the traditional knife. It is a flower petal shape similar to the oblique arrangement. Because of this, each inclined plane actually has multiple cutting edges, which are combined like the combined cutter in the front section of the shield machine, not a single cutting edge fighting, It's the blade combination charging in the group.

The advantage of this is that the hole processing can be completed in the shortest time and the formation of delamination and wire drawing can be avoided to the greatest extent.

Of course, if you want to do this step, you can't just think about it. It requires extremely precise calculation and design.

Don't even think about it without rich experience in this field and technical accumulation of multi batch product iteration.

Not to mention this, we must have the most top equipped industrial design software and ultra precision processing equipment to complete it.

China's take-off is not talented. These two have been available for a long time. Let alone jsnb series industrial software itself is the killer mace of China's take-off in industrial design. In terms of ultra precision machining, China's take-off additive processing technology (i.e. 3D printing technology) is unique in the world.

Relying on these two trumps, China Tengfei has created its own cutting tool system for composite processing based on ceramic matrix composites.

After years of development, it can compete with the relevant brands of Loma company in the United States.

However, whether it is Loma or take-off, related products are expensive.

Therefore, the use of props by other manufacturers depends on their own specific processes and products.

After all, Loma's products have a longer service life, but the corresponding cost is also higher; The take-off life is slightly worse, but the cost is lower.

It can be said that each has its own shortcomings and strengths. Because of this, many manufacturers who need composite processing are basically two mixed applications.

Of course, the tnb-2e UAV production line in Saudi Arabia doesn't have to be so troublesome. All of them use domestic equipment. Naturally, the cutting tools also have to use the products taken off by China. Otherwise, I think we can get $20 billion?

That would be silly and naive.

You should know that the ordinary special tool head for processing T300 carbon fiber composite produced by China Tengfei costs US $20000.

The service life of this cutter head is only 450 holes.

That is, after drilling 450 holes, the $20000 special tool will be completely scrapped. If you want to continue to use it, you can only replace it with the same $20000 tool.

Each wing of tnb-2e UAV has 11800 precision holes, and the whole aircraft has no less than 1.2 million connecting holes.

75% of the whole machine adopts composite material structure, 75% of 1.2 million is 900000, and a special tool needs to be replaced for 450 holes. Considering 900000 empty holes, 2000 tools are needed. If each tool is 20000 dollars, 2000 tools is 40 million dollars.

This is only the tool consumption of a tnb-2e UAV.

The key is how can Saudi Arabia produce one UAV after struggling to get it back from the old king?

At least 100 must be set up, otherwise how to show the positive choice of Prince Salman Weiguang.

The consumption of light tools for these 100 UAVs alone is $4 billion.

The problem is that the similar consumables of the whole production line are not just such special tools, such as the regular upgrading of industrial control software, the regular maintenance of machine tools and equipment, the consumption of auxiliary materials, and the use of basic raw materials

All sorts of things together are the big part of the profits of the production line.

In other words, once the production of this tnb-2e UAV lands in Saudi Arabia, it will be a leech lying on Saudi Arabia. If it does not suck up the blood in Saudi bone marrow, it will never let go.

Otherwise Zhuang Jianye will do this business regardless of past grievances?

You should know that the aircraft production line prohibited by developed countries generally can't be bought with money. How can Zhuang heixin stop if he doesn't earn double?