Chapter 1315

Yes, when the air force and the headquarters found that the funds were in place, China's take-off broke out with astonishing efficiency. They didn't say it, but they were very happy in their hearts.

We should know that the cost is not only money, but also time, and even the time cost is much higher than money.

This is also the reason why some bigwigs often think that "problems that can be solved with money are not problems".

For the air force and the headquarters, the time cost is much higher than the money in hand. After all, the domestic economic development is not waiting for people. What's more, as the best destination for industrial transfer in developed countries such as Europe and the United States, China is bound to usher in a round of rapid economic growth in the future.

Especially after the accession to the World Trade Organization has become a probability event, this expectation has become more and more obvious.

In order to protect the hard won achievements of economic development and maintain domestic security and stability, it is difficult for the army to ensure its independence if it does not have the means to solve the current serious security problems.

Because of this, the air force and the headquarters are very eager to obtain the target indication and command and control system as soon as possible, so as to organically integrate the combat forces of the whole air force, and realize the vision of air space integration and both attack and defense.

As for the demands of the air force and the headquarters, China's take-off still has a deep understanding. Just because of this, China's take-off does not surpass its own technical level in the construction of the target indication and command and control system. In the eyes of the outside world, it is very tall. Most of the architectures use mature technology, and even reduce the technical requirements in some aspects, There are some shortcomings.

Take the yun-33 early warning aircraft with balance beam system for example.

Although compared with the trj-500 radar refitted with MiG-31 airborne radar, it is a few grades stronger in warning, and it is really entering the ranks of early warning aircraft.

However, compared with the E-2C "eagle eye" carrier based early warning aircraft of the same class, the yun-33 early warning aircraft still has a big gap in independent operation.

At least, the E-2C "eagle eye" carrier based early warning aircraft can be separated from the guidance of the ground and command each batch of fighters to conduct air defense interception and attack on the ground and sea alone.

Although yun-33 early warning aircraft can also do this, the number of batches to guide and command or to deal with incoming targets is much lower than that of E-2C "eagle eye" shipborne early warning aircraft. That's all. The key is that the transmission efficiency of zbf-18 data link developed by China take off United Electronic Science and technology X Research Institute carried by yun-33 early warning aircraft is not high.

No way, this set of satellite to satellite data transmission system, which was born out of the "sky link" project, was not designed with high efficiency.

After all, the transmission between satellites is only simple location information and adjustment instructions, which can last 300 KB per day.

However, when it comes to early warning aircraft, it often has to process hundreds of batches of data, track more than 10 targets with the greatest threat, and keep close contact with the fighter and the rear, which leads to a sharp increase in the transmission volume.

If you build yun-33 early warning aircraft according to the most ideal scheme, its performance should be at least at the same level as that of E-2C "eagle eye" shipborne early warning aircraft. The problem is that the Link-16 data link on E-2C "eagle eye" shipborne early warning aircraft has a transmission efficiency of 2Mb per second, and the operating distance is more than 900km.

The zbf-18 data link used by yun-33 early warning aircraft has a transmission efficiency of only 720kb per second and a left-right distance of only 320km.

The comprehensive performance of the Link-16 data link on the E-2C "eagle eye" carrier based early warning aircraft is not up to half.

In order to solve this problem, according to the actual situation that the domestic air force relies on ground guidance, China Tengfei has installed a set of secure communication system on the yun-33 early warning aircraft. Once encountering large formation and multiple batches of guidance, the yun-33 early warning aircraft will start the communication system, It forms a search and guidance air intelligence network with long-range radar and command system on the ground.

At this time, the yun-33 early warning aircraft was not so much an early warning aircraft as an air intelligence radar flying in the air.

Similar situations exist more or less in the special support aircraft such as yun-31, yun-32 and yun-34. Only yun-17x medical ambulance fully meets the theoretical requirements and becomes one of the few complete aircrafts that China can take off at this stage.

However, for the air force lacking similar equipment, these aircraft not only solved the problem, but also improved the combat effectiveness of the air force.

Take the yun-33 early warning aircraft as an example. Although it can only be transformed into one air-based radar in a large formation and multiple batches, it does not mean that the yun-33 early warning aircraft is really useless. The yun-33 early warning aircraft that can make every effort can still provide first-hand information to more than ten batches of the most threatening targets and give priority to commanding its own fighters to intercept or attack.

This is absolutely not in the previous Air Force combat sequence, and it is definitely a great progress for the air force. At least it is much better than the amateur players who trj-500 radar warning aircraft can only find and have no command and guidance system.

Besides, this batch of yun-3x special support aircraft developed and produced by China Tengfei is not the whole group, and there is still a lot of room for improvement from platform to related technology.

In fact, in the plan submitted to the air force and headquarters by China take off, the carrier platform of all special support aircraft is not the current trj-700 regional airliner, but a new generation of trj-900 regional airliner. This is a model between trj-700 and fcnb-2000. The maximum take-off weight is 51.2 tons, the maximum passenger capacity is 124, the maximum range is 4627 km, and the practical lift limit is 13000 M. Two wd-64ml turbofan engines with large bypass ratio and thrust of 10.5 tons are adopted, and the layout adopts the aerodynamic scheme of hanging under the wing rather than hanging at the tail as trj-700, which makes trj-900 closer to the mainstream aerodynamic layout of civil aviation aircraft. He is a regional airliner because the main structural parts of the trj-900, such as the fuselage, landing gear and wing, are enlarged on the basis of the trj-700 regional airliner, and the subversive improvements have been made in terms of comfort and range. Therefore, the trj-900 can be used as an alternative to the trj-700 for medium range passenger transport. However, in addition to the properties of regional airliners, a flight distance of more than 4500km, more than 100 seats and more comfortable ride experience are enough to carry out trunk flight missions of more than 1500km, especially the classic trunk routes of about 2000km, which are from North China to East China, from East China to South China, from South China to southwest and from southwest to North China, The trj-900 can be easily upgraded. What's more important is the lighter fuselage and more fuel-efficient engine. Compared with Boeing 737 and Airbus A320, the trj-900 has lower operating costs. Because of this, once the trj-900 regional airliner is fully mature and put into operation, it will not only become the terminator of Bombardier Embraer's regional airliners, but also the most powerful competitor of Boeing and Airbus.