Chapter 1363

Listening to the head of the headquarters, many army leaders and heads are still at a loss. What is an aeroengine altitude test bed? Is this important? How could the head of headquarters get so excited?

As a result, before the leaders and leaders of these units raised questions, the head of the headquarters had already reported to the leaders of the military headquarters nearby: "the project of China's take-off started five years ago, which was jointly funded by the investment of take-off, the location of the southern foot of Qinling Mountains and the Aviation Industry Corporation, In response to the higher authorities' initiative to strengthen the construction of basic scientific research, the headquarters also invested 800 million yuan to participate in it.... "

Hearing this, the military leaders suddenly said, "Oh... I remember. You mean the" headquarters building "project, right?"

The head of the headquarters nodded: "yes, it is the" headquarters building "project. The total investment of the whole project is more than 3 billion yuan, of which 32% is from Tengfei investment, 26% is from the headquarters, 26% is from the local government, and 16% is from the aviation Industry Corporation. Originally, it was expected to be completed in eight years, but I didn't expect it would be completed in five years..."

With the support of the headquarters building project, the time-consuming and laborious flight test can be easily completed on the ground. After all, as the second largest aero-engine high altitude test bed in the world today, China's take-off is so confident to display its wd-64vip aero-engine, The "headquarters building" project has two high-altitude simulation test chambers with a diameter of 6.5 meters, which can simulate the operation state of an aero-engine at an altitude of 30000 meters, a speed of 3.8 mach, and a net air flow of 1158 kgs... Its technical level is second only to that of NASA, Boeing and Loma built in the late 1980s, ASTF high altitude test simulator with a diameter of 8.7 meters.... "

After all, the whole "headquarters building" project was approved by him, but the others present were different, because many people heard the existence of this project for the first time. Moreover, the voice of the head of the headquarters was not very loud, but it was just able to be heard by the heads and leaders of the troops present, The chief of the headquarters was more solid. This is to introduce the "headquarters building" project to these army heads and leaders through the report. Naturally, they listened more carefully.

But because of this, many people were shocked by the advanced nature of the project.

After all, many of the people present are very knowledgeable. For example, the leader of the air force who knew a lot about aeroengines and the leader of the Naval Air Force knew the value of this high-level aeroengine altitude test rig very well.

In a word, if you want to develop a mature aeroengine, the high altitude test bed is the absolute standard configuration.

Otherwise, almost all countries or enterprises that threaten to develop aeroengines are hooligans!

Because the high altitude test bed is similar to the aero-engine, just like the little movie enlightenment of the island country love tutor before the drag racing of fierce men and beautiful women, it absolutely complements each other and is indispensable.

The reason for this is that there is no way. With the improvement of aviation technology, the flight height and speed of aircraft are also rising.

The situation at medium and low altitude is fairly good. The normal pressure, wind force and speed can be simulated with an ordinary test bench. The environment at an altitude of 10000 meters is completely different. In this case, how should the intake speed of the engine be controlled? How much influence does air pressure have on engine surge? How to maintain the efficiency of the engine at supersonic speed?

All of these things need a high altitude test simulator to make.

Of course, it's hard to say that it's OK to use test aircraft.

The question is what kind of test aircraft is needed to complete such a complex high-altitude and high-speed flight test?

Ordinary fighter?

Speed and height can be achieved, but the carrier platform is too small to fit so many test equipment.

Large bombers and transport planes are able to carry large-scale instruments and equipment. The problem is that the speed is only 0.85 mach, which is really unable to complete the high-altitude and high-speed flight test task.

What's more, there are great risks in flight test after all. If something goes wrong and leads to the destruction and death of an aircraft, it will not only cause the loss of personnel and property, but also a blow to the whole morale and progress.

Of course, the most important thing is the cost. It takes nearly 500000 hours for an aero-engine to start the test from its parts, and 120000 hours for the whole engine test, including 10000 hours for the test run. If all the 10000 hours are flight test by aircraft, the cost can be as high as collapse.

That's all. The key is that the efficiency of flight test with aircraft can also make people crazy. After all, there will always be bad weather in a year. In order to ensure safety, flight test can only be suspended. If the aircraft's mechanical failure, personnel's rotation and other adverse factors are added up, the 10000 hour flight test will not be clear until seven or eight years.

Therefore, whether from the economic cost, or from the efficiency, or from the safety aspect, the high altitude test simulator is an indispensable and important basis in the development of aero-engine.

But just because of this, the threshold of high altitude simulation test bed is very high. Several times, only the five hooligans of the Security Council are equipped with it. In other words, only the five hooligans have the ability to develop and produce high-performance aeroengines in theory.

As for Germany, Japan, India, Brazil and other secondary powers saying that they want to enter the aero-engine industry, the five hooligans just smile and see how these secondary powers make jokes.

Do you want to develop high-performance aeroengine without altitude test simulator? Among other things, when the aircraft is at Mach 1.5 per hour, how can the mechanism in the intake port be changed to ensure that the high-speed injected air flow does not damage the turbine fan blades, and effectively ensure the normal operation of the aero-engine without dangerous surge?

Computing with supercomputers? Come on, even if there is a supercomputer, you have to have the relevant basic data to calculate. How do you get these basic data? Of course, it's done little by little with the high altitude simulation test bed, otherwise?

The Mach 1.5 turbulence test is the most entry-level of all high-altitude tests. As for the test of turbofan ramjet operation at Mach 3.5 at an altitude of 30 km, it will be the commanding height of the aviation development field in the next 20 years.

So it's useless for the officials and media in Germany, Japan, India, Brazil and other countries to clamor for a breakthrough in their own aero-engine. The key is to see if there is a key supporting system. If there is no supporting system, even a fierce man is just a first brother who doesn't know anything. He can only be teased by beautiful women instead of conquering on his own initiative.

The problem is that Germany, Japan, India and Brazil also want the high altitude test bed simulator, but it's really not something that you can get if you want, because the high altitude test bed not only has large investment, but also has high technical requirements. At the same time, it is a typical high energy consumption, which is not affordable by ordinary countries, High altitude simulation test bed is also known as the toy of big country!