The development of embedded operating system is a key project, but what needs to be tackled in this heavy four avionics project is actually another technology that is also related to whether the avionics system can fully exert its due strength: airborne computer. Pen & Fun & Pavilion www.biquge.info

First of all, the operating system must be installed on the computer for use, so the performance of the computer will directly affect the response speed and smoothness of the entire avionics system.

The computer used by the early three generations of aircraft is actually not very good, its computing power is very underground, but fortunately, the early military airborne computers do not need much computing resources, and even to put it more bluntly, the early onboard computers do not even need an operating system, just implant a program into the computer.

However, with the continuous development of digital flight control and the deepening of avionics design, and the development of fighter jets in the direction of multi-purpose, the writing of avionics code has also begun to increase, and embedded airborne operating systems have appeared on airborne computers.

With the continuous development and deepening of these new situations, new upgrade requirements have been put forward for the performance of the most important airborne computer of the airborne avionics system, so this is a key project of the four avionics. But when I think of the development of airborne computers that is more worrying than the development of operating systems, even Li Yun, who has always prided himself as the first person in the field of avionics, is also worried.

"Just talking about the airborne computer, we are still lagging behind the world's mainstream level, before we got the airborne computer production technology that is still usable through various methods in the Lightning, No. 10, and J-18 eras, but our domestic technology is far from enough, and there is no way to upgrade the technology, so now it is a whole generation behind the Americans."

The upgrading of electronic technology follows Moore's law, but it is somewhat different in the field of special industrial electronic control equipment, which is mainly because of the demand, which will lead to the slow replacement of the airborne computer, but once the on-board computer is updated, it also means that the gap between the performance of the two generations of computers is like a chasm.

To really tell the truth, the design of the airborne computer is not too many fancy functions, what you want is safe, reliable, low power consumption, and the performance can meet the basic requirements.

In other words, the upgrade of the on-board computer can almost be said to be the technical upgrade of the CPU, but when it comes to the independent technical upgrade of the republic on the central processing unit, this can only be .......

Thinking of these, Yang Hui felt that his head was big: "No matter how difficult it is, we must be hard-headed!" At present, there is no unit in the entire aerospace system of the entire republic, except for our AVIC Southwest, that is likely to invest in the development of military airborne computers, so this time we can only find a way to gnaw it down with our own teeth. ”

It is certainly not enough to just make demands and give orders, and it cannot be said that the horses are asked to run or the horses not to eat grass, and some necessary support must be resolutely put in place.

"What requirements do you need for the project, you can find me directly, I can solve it must be solved within the fastest time, and if it can't be solved, it will go directly to a higher level to solve the problem, in short, we must make things for me, and even in the cost of manufacturing and procurement, we can accept more than ten times the quotation of the same product from abroad."

Ten times the price of the same foreign product, this is not a joke, but there is really no way, the airborne computer developed and produced abroad has a large output and advanced technology, so the selling price can be relatively low.

But not on the side of the republic, if you want to realize the development and production of a new generation of airborne computing, it must be at least 70% of the new processes that need to be broken through, and in this way, the product needs to bear the cost of scientific research of all related technologies, and the price is inevitable.

Taking a step back, if it is really because the process of mass production is not mature, then it is actually acceptable to use laboratory conditions to manufacture, which is why Yang Hui dares to say that he can accept foreign prices more than ten times, which is entirely because the cost of laboratory manufacturing is too impressive.

Of course, in fact, the foreign purchase price of an airborne computer is not very high, ten times or even twenty times the purchase price can actually be affordable, at least the airborne computer compared to the price of the entire avionics system, it does not occupy a large proportion, this is the sky is to increase the cost of avionics by tens of millions!

The price of tens of millions is compared with the manufacturing cost of hundreds of millions of yuan in the fourth generation, which is only one or two percentage points, and the cost premium of the whole machine is not unacceptable, the question depends on whether the thing can be made in the end, Yang Hui is afraid that there is no way to produce airborne computer CPUs that can be used in the laboratory environment.

But no matter what the final result is, this project must be carried out, as a cross-generation key model of fighters, if there is no certain technical risk is certainly impossible, and such a large-scale key project as a heavy fourth-generation aircraft, if it is not able to stimulate the development of one or two key areas of the industry, then from the perspective of the entire national industrial system, the project is also a failure.

Yang Hui was reluctant to say more: "Probably just like this, the avionics system is very important, which is why I want to concentrate the technical forces in the field of avionics equipment in the southwest of AVIC, and then re-form a professional large-scale company." ”

Now the two most important and risky technologies of this avionics system are the operating system and the on-board computer, although some others will also have some technical risks, such as the built-in infrared navigation and laser targeting system technology used on the original J-18, which has been upgraded again on the heavy four.

After the integration of photoelectric radar, this complete system will no longer only serve ground attacks, but can also achieve very effective over-the-horizon target detection in air combat, and other combat full-authority data monitoring technologies are also used.

Even in the design of the avionics system at the beginning of the whole project, it was very bold to propose the use of optical fiber to transmit various real-time data, so as to effectively optimize the internal wiring of the fighter, speed up the transmission, reduce the weight, and so on.

It's a pity that in the end, Yang Hui still vetoed the optical transmission technology, although the technical advantages of this thing are incomparable, but in terms of maturity, it still needs to be tempered for a long time before it can be fully practical, and now the technical risk of the heavy four avionics system has been very large, if you bite the bullet on the optical transmission, Yang Hui is really difficult to imagine the final result. (To be continued.) )