Chapter 776： Improved engine continued

This engine, from the inside out, from the turbine impeller to the smallest screw, including the control chip, is all made in China.

More importantly, all materials, from the material of the turbine shaft to the one-piece impeller material, are all made in China.

Even with all the designs, the domestic technicians have done a lot of optimization on the basis of the Black Hawk engine. Apart from the most basic principles, they have changed completely differently.

It can be said that this is a purely domestically produced product. In a formal language, this is a domestically produced turboshaft engine with completely independent intellectual property rights.

What's more, the design performance of this engine is so excellent that it is full of expectation.

The Black Hawk engine itself is the second-largest helicopter engine. The plateau has excellent performance. It is equipped with the Black Hawk series helicopter and is the core power of the Apache helicopter.

This engine has 50 times more power than the t700ge701c Blackhawk helicopter, with a weight reduction of 20, a weight reduction of 20, a fuel saving of 25, and a reduction of more than 50 sub-assemblies. The reliability and maintainability are directly improved by one level.

Intuitively, using this engine on a Black Hawk helicopter can increase the range by 161.

The payload has more than doubled.

Similarly, Apache's improvements are equally jaw-dropping, with a new engine that can increase the range by 115.

In the end, the new engine may mean more than 10 fighters or 93 shells on the Blackhawk, while Apache's flight time can be increased by 79 minutes.

It can be said that the performance of this engine will leap over all the existing engines in the world, and the world's first in the same specification is no exception.

If our Wuzhi 10 can use this engine, I am afraid I have to face an embarrassing situation, that is, the design performance of the helicopter itself is far from the performance of this engine, so we must not redesign it, or design another performance. More excellent armed helicopters or utility helicopters.

However, these are all expected performances, all of which are based on the success of this engine to meet the design performance requirements.

And the ignition is successful, it is the basis of all this.

Now that the ignition is successful, it shows that the most important step has been taken.

Everyone was excited, their eyes were on the engine that seemed to be working, and they didn't want to look away when they looked at it.

The engine runs smoothly without changing the power, and there is no abnormality.

It was not until thirty minutes later that Zhao Wei closed again.

The overall test is a rigorous and complicated process, which is very cumbersome.

It is important to know that the stable operation of the engine is related to the performance and safety of the helicopter in the sky, and no one can be numb.

For this test, in addition to the hard processing of Guo Tailai and Zhao Wei, the entire design team and the test team and the maintenance team began preparations a few months ago to ensure that the engine will be on the spot and the car will be fired immediately.

The test procedure is very cumbersome, normal ignition, smooth operation, increase or decrease the "throttle" will not be a problem, can support ten minutes, thirty minutes, one hour, three hours or even longer.

After each test, it is necessary to carry out sufficient maintenance inspection to see if there is any deformation of the turbine shaft, whether the impeller has cracks, whether the creep during operation is reasonable, whether it affects the overall performance, and every step must be very strict and strict. Carry out inspection.

This is still in the field of interview vehicles, in addition to testing the stability of the engine operation, but also performance calibration test, test continuous power, intermediate power, emergency power, maximum continuous fuel consumption rate, intermediate fuel consumption rate, power to weight ratio , turbine inlet temperature and so on a series of parameters.

Various sudden situations such as engine turbine blade breakage, blade breakdown mechanism, engine oil leakage, and test line failure may occur during engine test.

These need to be on-the-spot, quick response, and a strong maintenance team is also a must.

Fortunately, this team has been practicing with model simulations for a long time, and can always stand up.

Possible faults also require a very large test space and a sufficient safety distance.

This is one of the main reasons why Guo Tailai's studio can't be used as a test site.

In addition, the cumulative life is recorded for each inspection test.

Although the material has been tested for a long time, the accumulated service life is as long as thousands or even tens of thousands of hours. However, in actual application, it is still necessary to record the accumulated service life. This test cannot be calculated and estimated. Ten thousand hours, it depends on the operation of 10,000 hours to draw conclusions. Other calculations and estimates are not as convincing as this.

Of course, it is usually determined by a permanent test procedure, pedestal and field 1:1 hours.

There are other methods, but they all require a long test to calibrate.

Just this, you can see the gap with foreign countries.

The 10,000-hour cumulative life test, even if it is up and down, has to be more than 400 days.

But is this possible?

Obviously impossible, every time after a few hours or dozens of tests, it is necessary to stop and enter the semi-disassemble maintenance inspection state. Even if it is tested for three hours on average, it will take 3,333 days to get. This conclusion is more than nine years.

Or this test time is doubled, six hours or even ten hours of high-intensity testing, which takes at least three years.

That is to say, the introduction of a new engine, known as the 10,000-hour life, from the start of the engine to the conclusion of life, it will take several years.

Why do foreign aero engines have advantages over domestic ones, and people have more than a few decades of start-up time than us, and this stable operating life needs to catch up.

"Running time is 60 minutes!"

"Low 30 minutes of continuous power, 2000 kW!"

"Continuous power, 1860 kW!"

"Emergency power, 2170 kW!"

"Continuous fuel consumption rate..."... After the maintenance of the semi-disassemble machine is normal, install it again and start it, start connecting the test instrument for testing, and the data of one item will be introduced.

The introduction of each piece of data, the design and testers' heart heat increased by one point, which means that the distance is closer to success.

The things that Guo Tailai made by hand were really extraordinary. At the beginning, everyone was very cautious, but with a simple test report of materials and parts, and after careful testing for two days, everyone found that the engine was really powerful.

After the simple communication between Zhao Wei and Guo Tailai, it was decided to increase the test intensity, lengthen the test time every day, and strive to get the data of the interview vehicle as soon as possible, and then enter the field installation test phase as soon as possible.

A week later, the test data of the initial interview platform has been released. In addition to the operational life has not been calibrated, it has completed three consecutive fault-free operations for fifteen hours, and the performance is so great that people can't change it immediately.

The preliminary test report was sent to the general assembly generals in the first time. After seeing this report, the generals could not sit still.

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