Chapter 595

"Lao Zhang, that's not right. Attack-2 is a drone. According to you, a drone is not a plane?" As soon as the leader of the air force, who was called Lao Zhang, was heard, a military commander who was familiar with him joked.

Lao Zhang's old face, full of vicissitudes, was not embarrassed at all. He just glanced at the Joker and said calmly, "I mean someone's flying, do you understand? It's someone flying a plane. Hey, it's no use telling you so much. You don't understand it. "

In a word, the Joker choked. Lao Zhang didn't have time to talk to him. Instead, he looked at the wd-30s turbofan engine in front of him. It was not only Lao Zhang, but also the leaders of other units in the air force, even some of the Navy.

I can't help it. It's the wd-30s turbofan engine data that makes these people see great potential. 586dan, that is 586kg thrust. This index is not outstanding compared with the general turbofan power.

But if we add the culvert ratio of 2.86, the thrust weight ratio of 4.12 and the total weight of 142 kg, it will be different.

Because the bypass ratio of this kind of small turbofan engine is usually between 1 and 2, which can not exceed 2.5 at most, otherwise the overall quality will be uncontrollable and it is easy to cause overweight, thus affecting the thrust weight ratio.

Therefore, in the world, the thrust to weight ratio of turbofan engine installed in the integral cylindrical shell of attack-2 is generally about 3.2 to 3.5, such as the f-121 turbofan engine used in Tomahawk cruise missile of the United States.

The ms400 turbofan engine used in the Soviet Union's x-59 cruise missile increased the thrust to weight ratio to a high level of 4.7, but correspondingly, its service life was greatly reduced, with only more than 20 hours, which was comparable to the full range of the x-59 cruise missile, and it was not recyclable.

The specific specifications of the f-121 turbofan engine on the Tomahawk of the United States are not as violent as those of the ms400 turbofan engine, but its output is stable, and it can be recycled in daily exercises or tests. In this regard, the Americans are better off than the Soviets.

However, judging from this point of view, wd-30s turbofan engine does not have many advantages, because no matter the f-121 turbofan engine of the United States or the ms400 turbofan engine of the Soviet Union, the total mass does not exceed 100 kg, the total thrust is less than 400 kg, and the service life is not very long, because we should be ready to die with cruise missiles at any time Such a long service life is not cost-effective.

In contrast, the wd-30s turbofan engine has a service life of at least 1000 hours, which is obviously not for missiles. But it is precisely because of this that Lao Zhang and others pay more attention to it.

Because both bypass ratio and thrust weight ratio are similar to the data of domestic intermediate trainer selected by air force and naval aviation.

When it comes to the trainer, the aviation commanders of the Navy and air force also have a headache. In the mid-1980s, the development project of the intermediate trainer was originally designed to be launched by the tfe731 turbofan of Honeywell. By the end of the 1980s, due to well-known reasons, the medium trainer project and the S-70 helicopter parts of Continental Airlines had encountered difficulties.

It's hard to buy, but the price is so expensive that people can doubt their life. No one's money comes from strong winds. What's more, China is not rich now, so we can only run aground.

This is not good news for the Navy and air force, which are already short of professional trainers, but it can't be done in China for a while. Even if the Navy and air force are in a hurry, they have to wait.

As a result, they waited and saw in the exercise organized by the headquarters that the bypass ratio of wd-30s turbofan engine is 2.86, and the thrust weight ratio of 4.12 is not much different from that of tfe731 turbofan engine.

The only thing missing is thrust. The wd-30s turbofan engine is 586 kg, while the tfe731 turbofan engine is 1.6 tons. The difference between the two is three times.

But the problem is that the engine size and weight of tfe731 turbofan are almost two to three times that of wd-30s turbofan engine. If Tengfei group can improve on the basis of wd-30s turbofan engine and meet the requirements of intermediate trainer, it should be no problem. At least it can solve part of the emergency transition.

At the same time when Lao Zhang and others became enthusiastic after listening to the basic data, the head of the headquarters learned the basic situation from several technical staff, and he was determined to go to Tengfei group after the exercise. Let alone the wd-30s turbofan engine.

After making up his mind, the head of the headquarters didn't take charge of the fact that Lao Zhang and others got together to discuss the wd-30s turbofan engine. What's more, they didn't tangle on this issue. There was no professional in the field of aviation development at the scene. Instead of wasting time here, it would be better to save money to go to Tengfei group and ask Zhuang Jianye.

So the head of the headquarters simply put forward a few words and got some ambiguous answers, so he turned the topic over and continued to ask Hou Yuejin: "if the portable air defense missile can't be aimed, what's the matter with another electronic jamming failure? The blue army reported that the control signal of the attack-2 UAV disappeared at the moment of releasing interference, but the attack-2 UAV was more flexible than before. What's the matter? "In addition to Lao Zhang, who was really attracted by the wd-30s turbofan engine and was still discussing in a low voice, other people were attracted by the words of the head of the headquarters. However, Hou Yuejin didn't answer this time. The leader of the Second Artillery who had a straight eye before said in a low voice: "should we use the photoelectric terrain matching system?"

After hearing this, Hou Yuejin immediately nodded: "yes, that's it."

"Then there is nothing to say, relying on photoelectric image conversion to identify the path, no electromagnetic wave escape, how can this interfere?" The leader of the Second Artillery nodded and then turned to the head of the headquarters: "terrain matching technology is the key technology of cruise missile navigation and guidance. We have made some achievements in joint tackling key problems with dozens of domestic scientific research institutions, and Tengfei group has also participated in it. What we have done is photoelectric image terrain matching technology.

To put it bluntly, it is to compare the photoelectric effect with the electronic map input in advance, and then control the flight of the aircraft according to the comparison situation. The laser Research Institute of Tengfei group has deep attainments in the photoelectric field, and has made great progress in the photoelectric terrain matching. We are preparing to install several types of low-speed missiles at the end, but it is still testing, but there is no progress I think that they have been applied to attack-2 UAV, which is really... "

The leader of the Second Artillery shook his head and grinned bitterly. He really felt that the conversion rate of Tengfei group made him not know what to say. How long did they issue the low resolution optoelectronic terrain matching civil license to Tengfei group? It seems that less than a month ago, it was used in the attack-2 UAV.

After earning a wave of research and development funds from the Aerospace Department, he slaughtered a group of airborne soldiers with the results in a flash. Looking at the fiery eyes of the leaders of other arms and services, he estimated that Tengfei group would have to stab people for several rounds. This efficiency is simply