The answer is obvious, those enterprises that count on their old books, like to make quick money, and rely on the directive orders of the state and the army obviously can't do it.

Not to mention anything else, Tengfei Group's annual research and development funds are enough for them to eat for several years, and they have persevered for several years, and the accumulated results are not to mention sweat and cows, but they are also much thicker than the general enterprises that eat the old capital.

Especially in terms of optical imaging, the North China Institute of Optics, a subsidiary of Tengfei Group, has finally borne fruit after so many years of unremitting research, especially after receiving the support of experts from the Soviet Union to China, the technical level is even more advanced.

One of the most typical is the visual enhancement system that allowed the Y-15PLUS to land smoothly on the shooting range island at night without support during this landing exercise.

The system is divided into two parts, one is the detection system, and the other is the display system.

The detection system uses the infrared principle to accurately identify the infrared signals emitted by running to, buildings, parking vehicles on the ground and even running to the surrounding plants, so as to determine the correct location to run.

Of course, in order to achieve this degree, the accuracy of the infrared sensor must be high, thanks to the progress of Tengfei Group in aerospace technology in the past two years, so that the North China Institute of Optics has successively made breakthroughs in infrared optical components, so that the infrared visual augmentation system produced by it can measure the temperature change of five thousandths.

With such a sensitive infrared photosensitive component, combined with the comprehensive utilization of the system sensors and advanced algorithms integrated by Tengfei Group, these five-thousandths of the temperature change is finally continuously displayed on the display system in the form of "photographic photos", and it continues to fall, just like what the eye sees, without any lag at all.

As for the effect, of course, there is nothing to say, thanks to the advanced technology of infrared components, the system can not only see through clouds, fog, rain, snow and other complex weather, but also achieve a little infrared gaze function, so as to further improve the visual distance.

According to the test of the modified Yun-15PLUS by Tengfei Group, under the condition of 250 meters of visibility, the visual enhancement system produced by Tengfei Group can reach a distance of 3,200 meters.

If the meteorological conditions are good, the range can be further reached more than 6,000 meters.

This value is almost the same as similar products produced by American and French manufacturers, which is enough to reach the world's advanced level.

The reason why it did not become the world's leading is mainly because the visual augmentation system of Tengfei Group still has obvious shortcomings compared with the products of the United States and France, and the most critical one is the large size and weight of the whole system.

While American and French products are the size of a shoebox and weigh only a few kilograms, Ascendas' products are larger than ordinary black-and-white televisions, weighing nearly 20 kilograms.

There is no way, too advanced components Tengfei Group can not buy, and the domestic ones cannot be produced, Tengfei Group's engineers can only use components with average performance for integration, system integration and industrial design are naturally not as good as the United States and French products.

However, it would be a mistake to judge the poor quality of the products of the Ascendas Group, although the compactness of this system is insufficient, but with the display system specially developed by the Ascendas Group, the advantages of the whole set of products are highlighted.

Because the display system used by Tengfei Group is not a simple display screen, nor is it a fledgling LCD screen, but an optical diffraction screen specializing in aviation aircraft.

A display device that is as transparent as a window glass, but can display various flight data and parameters of the aircraft after start-up.

Initially, this technology was applied to fighter jets, allowing pilots to reduce the burden of aircraft take-off and landing and rapidly changing air combat, thus becoming a vital display equipment in aviation history.

Because of this, optical diffraction screens have appeared and become an important equipment for countries around the world.

It's just that for a long time, this kind of product has been the exclusive domain of military aircraft, and civil aircraft have not been widely used due to factors such as cost and technical barriers.

However, in order to open up the international regional airliner market as soon as possible, Tengfei Group has been increasing the technical level of Haidongqing series regional airliners, one of which is to install optical diffraction screens.

It's just that Tengfei Group has no technical accumulation in this regard, and even the subordinate North China Optical Research Institute has no clue about it, after all, this technology involves more advanced optical technology and processing capabilities.

Fortunately, Tengfei Group has applied this technology in another important supporting project in which it participated.

As a result, Tengfei Group immediately cooperated with another participant to develop a special optical diffraction head-up display for the Haidongqing regional airliner.

And this important project is none other than Project 10, which is nearing completion.

When flying at night, there is no need to stare at the screen on the instrument frame at all times, but the optical diffraction screen can be put down, as the usual flight can be seen ahead, because the optical diffraction screen can be projected on the detected infrared signal image on the diffraction screen, so that the pilot pilots can fly the aircraft at night when taking off and landing as safe and easy as day.

Of course, with the visual enhancement system, it is only a matter of allowing the five Y-15PLUS to land safely on the shooting range island, so as to complete one of the subjects of this landing exercise.

After all, this landing exercise is more of a military detection and verification, not a real soldier live ammunition drill exercise, and because of this, the five Y-15PLUS did not carry a full load of airborne soldiers, of course, even if there are soldiers, the airborne troops will not be able to intervene, because the next subject is airspace fortification.

That is, to gain air supremacy over the occupied islands and maintain this advantage for at least 72 hours.

This subject may not be a big deal in the inland, but at sea, the pressure on the domestic aviation is not ordinarily great, so when everything on the shooting range island is settled, the white belly of the fish on the horizon is gradually revealed, and at this time, the voice of the commander of the Su-27 fleet cruising over the island sounded on the air-ground radio next to Zheng Quanli: "Our mission is coming to an end, and the new comrades-in-arms will hold up the sky shield for you, I wish you good luck and goodbye!"

As soon as the words fell, a Su-27 roared over the island at low altitude, and immediately instigated the lower wings to burrow into the thick clouds.

Zheng Quanli held the intercom and looked at the disappeared Su-27, wanting to say something, but as soon as the words came to his mouth, he didn't know what to say, and finally could only turn into two words: "Goodbye!"

After speaking, he put down the intercom and looked at Wen Kai, who was eating compressed biscuits on the side: "Now it's time to test Lao Xue." ”

As soon as these words came out, the sky roared again, and the next moment, the slender figures of the two Jian-8 II fighters came into people's eyes with the morning glow......