“Combustion chamber temperature reading!”

"The current combustion chamber temperature is 1100k, the combustion chamber is working in a stable state, no surge is found, and it is running well!"

“Check the combustion chamber pressure!”

"The combustion chamber pressure is below the design standard, and the load redundancy is 60%.

"Received, now conduct regular speed change experiments to read the compressor characteristic parameters."

"The air flow, boost ratio, efficiency, and surge point calibration data have been obtained, please operate the speed change."

"The speed change is completed. The combustion group will monitor the pre-gas and wall temperature data simultaneously."

.........

A series of commands were spread among the engineers of the test team. They were conducting comprehensive data monitoring of the engine. Everyone was nervously looking at the engine on the test stand, fearing that an accident would make all their efforts burn.

That was the real burning.

If there is any problem with the engine, especially the thermal components, it is not uncommon even if an explosion occurs directly.

But fortunately, this Qilian engine has always performed well.

Ye Zhou walked to the test team leader and asked while looking at the data:

"Tell me the overall situation. Compared with the ge-9x next door, how is the data performance of Qilian?"

"Reported to the Yegong, both engines have not yet entered the load experiment, so there is no big difference in performance. The data performance in all aspects is relatively stable. However, compared with ge-9x, Qilian has fewer surge points and lower vibration intensity of fan blades."

Ye Zhou nodded and continued to ask:

“When is expected to start the thrust test?”

"Start immediately, Master Ye, how much is the target thrust set?"

"Set it to 80. After 80, conduct a comprehensive inspection of the engine status, and then start the test again to see if there can be a higher breakthrough on this basis."

"clear!"

Everyone who was waiting at the scene also heard Ye Zhou's words, and all of their faces showed a look of surprise.

80 tons of thrust means that if it can be reached, Qilian has exceeded ge-9x in terms of thrust value.

Is this possible?

After all, Qilian itself is copied according to the ge-9x drawings, and the theoretical performance data should not exceed the prototype.

However, from another perspective, the key heat-resistant components of Qilian engine have been replaced with new materials. The high-temperature resistance of this material is increased by more than 60% compared to the original titanium alloy material. That is to say, under the extreme case, the front gas temperature can be increased by nearly 1200k based on the current 2000k.

According to the basic rules of aircraft engines, for every 100k increase in front gas temperature, the thrust can increase by about 10 tons. If no other situation is taken into account, the ultimate thrust potential of this Qilian engine should be around 190 tons.

Of course, this is just an ideal model analysis, and the actual thrust will also be affected by various factors such as bearing strength, blade strength, etc.

But even with these influences added, it seems that it is not difficult to increase the thrust by 10 tons?

Everyone looked at the display screen recording the thrust value, where there was a series of inconspicuous numbers recording the current thrust.

19.79.

The current thrust has reached nearly 20 tons, which is only 10 tons away from the thrust target of cj-1000ax.

The Qilian engine has not even started to exert force.

Two minutes later, the thrust test officially began.

The operator gradually pushed the joystick, fuel injection accelerated, the combustion chamber temperature suddenly increased, and the high-pressure air drives the bearing to pull the turbine fan blades, and then transmits the power to the fan.

The engine's air intake whistles violently, and the thrust value steadily increases.

"The current thrust is 30 tons, ge-9x thrust is 30 tons, data transmission has been established!"

The operator reported the situation loudly, and the data from the No. 2 test drive station was passed to the central system and then projected onto another terminal monitor.

Of course, the current test team will not immediately compare and analyze the detailed data of the two engines. They only capture some of the temperature, thrust, vibration and pressure data as reference to evaluate whether the Qilian engine operation is in a good range.

"It's 30 tons... The goal of cj-1000ax has been broken. Will their project continue to be done?"

"I guess it won't be. After having Qilian, all the high-thrust engines will revolve around the carpet project... If you do reverse engineering later, the military small bypass ratio engine will also refer to Qilian. I estimate that the project of Turbofan 18 Turbofan 20 will also need to be reconstructed."

"The sedan project is still busy after...35 tons."

"It's not over yet. Now the temperature and pressure data are much different from the rated extreme value. The fan blades perform very well, so keep watching!"

While speaking, the value on the screen has slowly increased to 40 tons, but under this thrust, neither Qilian nor ge-9x showed any abnormalities.

"Ge-9x is still strong. This speed range should be the most commonly used speed. Its performance is almost perfect in all aspects, with few surge points, and the vibration of the blade tip is almost negligible. This processing technology is not acceptable."

"That person has been doing it for decades. How dare he be the world's number one if he can't do it like this? Isn't Qilian the same? The data is perfect now."

"Qilian perfection is what it should be... No, why do I feel that my expectations are a little too high?"

The colleague beside him smiled, and after a while, he replied:

"It's not just you, but I'm the same... From the beginning of the test drive, I felt that Qilian's performance might be much better than the design parameters we expected before...50 tons."

The thrust displayed on the screen has reached 50 tons, and Ye Zhou's heartbeat has begun to accelerate involuntarily.

50 tons.

This is a number that the entire China Aviation Industry has never broken through in decades. Today, it has been broken through by the Huacai project team and Qilian engine.

It took nearly 40 years for the West to use the first generation of aircraft engines to 50-ton thrust engines.

Although they are stepping on other people's shoulders, isn't it a huge success to achieve this level in just 7 months?

"Continue to increase the force. Is the data normal?"

Ye Zhou's eyes could no longer see the chaotic data on the screen, but after he asked his questions, all the monitoring personnel paid attention to reporting to him.

“The temperature is normal!”

“The surge point is normal!”

"The pressure is normal! The internal structure is normal!"

"The air intake is normal!"

"The tail nozzle and wall temperature are normal!"

Everything is normal.

With a working state of 50 tons of thrust, the performance of the Qilian engine cannot even be described as perfect, but should be impeccable.

The numbers on the screen are still climbing slowly, and the speed of this number climbing has no fluctuations at all.

Push the operating lever and the number rises immediately.

At a certain moment, the operator even suspected that if he pushed the operating lever directly to the bottom, would the thrust of this Qilian engine immediately soar to a height that no one could imagine?

“How much redundant load is there now?”

"Pressure is 50%, temperature is 50%, but we can't get to the limit load to test. It's too dangerous. We have to reserve 20% of the redundancy."

While speaking, the operator continued to push the operating lever.

The thrust value rose to 60.

The thrust of ge-9x also reaches 60, but compared to Qilian, its thrust climbing speed has begun to decline.

"The ge-9x is almost at its limit, the surge point is starting to increase, the blade tip vibration is also accelerating, and the strength of the titanium alloy material is still not as strong as our new material."

"Qilian also started to show surge points...but the range is still controllable, and it feels like the performance of ge-9x under 30 tons of thrust."

"It is indeed...it should be an addition to the materials, and we don't surpass them in craftsmanship."

"It seems that the main contradiction between Ye Gong is right. It's over 70 tons, so ge-9x is not enough."

While speaking, all the data transmitted by ge-9x was alerted, the temperature pressure was approaching the cordon, and the vibration reached the dangerous area. Ye Zhou urgently stopped the test drive table next door.

But at this time, no one cared about the test run of ge-9x.

Because Qilian has broken through to a brand new field.

The thrust is 76 tons and is still rising steadily.

The operator looked back at Ye Zhou and asked:

"Mr. Ye, I'm about to reach the target value. Do you still need to continue to increase the force? The engine performance is currently... Everything is normal, and I feel like I'm not exerting my strength."

"Continue to increase the strength, 100 tons!"

The operator nodded, picked up the phone number at hand to notify the emergency response team to prepare, and then continued to push the operating lever slowly and firmly.

80 tons.

Qilian easily crossed this boundary, and various data began to fluctuate, but it was still within the green threshold.

90 tons.

The temperature and pressure redundancy is all lower than 35%, the numerical fluctuation range increases, and the engine working state begins to change. The first problem is the air intake. According to the 70-ton thrust design of ge-9x, the conical air intake in Qilian is a bit too narrow, and the thrust rise speed begins to decrease.

100 tons.

Monitoring data fluctuated violently, the redundancy dropped to 27%, the fan blades had begun to vibrate beyond the green threshold, and other accessories that were not globally designed began to seriously drag down the strong core thermal components.
To be continued...