Super Weapon Swap System

"Mr. Qin, you came just in time." Mr. Wu was directing the preparations before the ignition test run. After hearing the arrival of Qin Guan, he was very happy and ran over immediately.

Qin Guan looked at the engine on the test bench, and his face was also a burst of joy: "our progress is good."

It takes a long time to study an engine. The F110 of Eagle people comes from F101, and F101 comes from ge9. It can be said that it has been developed for decades before it really matures.

Now we are directly engaged in F110 engine. Naturally, we stand on the shoulders of giants. We already have a full set of technical data of F110, which is equivalent to the highest version of Surveying and mapping imitation, just like introducing Spey technology to produce Spey engine.

But Spey was taught by Niu Guoren. The teacher took the form of apprentices, and the new three-generation engine is equivalent to students reading and learning by themselves.

"Yes, we know that there is a big gap in our country, especially our J-10 fighter, which has begun to be finalized with Spey modification and has been put into the army in small quantities, but after all, the engine thrust of this fighter is not large, which seriously limits the performance of the fighter, and there is an urgent need for advanced third-generation engines," said Wu.

The J-11 with dual engines can also make do with the modified Spey. After all, its prototype power is insufficient, but others' variable swept wing design is very good.

However, the J-10 is different. The maximum thrust is only 11.5 tons, which can not meet the needs of the J-10. What the J-10 needs is that the maximum afterburner thrust can reach at least 12 tons.

They urgently need new engines to replace. Now, 4430 factory is also carrying out engine research and development day and night.

Once the core engine passes the experiment completely and there is no problem, it will be much easier to develop the turbofan engine.

"Yes, in addition to our fighters needing advanced engines, our airliners also need them," Qin said.

Now, the airliner also urgently needs advanced power. Yunshi still relies on imported engines for test flight, and the civil aviation department is not satisfied. The regional airliner developed by Hans also needs advanced engines. It can be said that in addition to the fighter engine with small culvert ratio, the airliner engine with large culvert ratio is also imminent.

"So we'll try to make it in the shortest time," said Wu.

Just then, a deputy reported: "the lubricating oil has been filled, the fuel pump is ready to start, and can be started at any time."

"Fire!" said Wu.

With Mr. Wu's order, the sharp scream of the turbine came out. Driven by the starter, the core machine was rotating rapidly. When the speed reached, the fuel began to be injected into the combustion chamber. Under the ignition of the spark plug, high-temperature and high-pressure gas was generated to push the turbine blades behind to rotate.

The fiery flame spewed out from the tail to form a beautiful flame. Looking at the flame, Qin Guan's face was full of joy: "the ignition was successful?"

"At a slow speed," said Wu, nodding vigorously.

The core of an engine must at least be lit first.

After the imitation of Spey and the research and development of modified Spey, Wu's team has a clear understanding of how to develop the engine. Wu is also very excited about the normal start of the engine.

Then, the test of this engine is carried out. If it works normally at various speeds and can pass the lasting test run, the core machine is almost a success in research and development.

"Bang." just then, suddenly, the engine on the test bench made a sound. With the sound, the engine shell broke and a fragment flew directly to the ceiling.

The scholar beside Qin Guan almost came up with a vigorous step and directly protected Qin Guan. Then look at the engine test bench. The engine has begun to catch fire.

Isn't that embarrassing?

People nearby rushed up with fire extinguishers to put out the flames on the engine. The roar of the engine gradually disappeared and stopped.

No one expected that the engine had a major failure only a few minutes after the test run.

What fault?

"The compressor blade of the engine is broken," said Wu. Although he hasn't disassembled the engine yet, he knows it only by looking at the situation.

The high-speed rotating blade breaks like a knife, hits the shell, breaks the shell of the engine and flies to the sky. If you fly to your side, someone may be cut into two.

When the engine stopped, Mr. Wu had already rushed over and looked at the compressor blades in front of him. He saw that three of them had broken, and the others that had not broken had also appeared obvious cracks.

Looking at these blades, old Wu's face was full of shame: "it seems that the compressor blades processed by Spey's technology can't meet the requirements at all."

At the beginning, when introducing technology to produce Spey engine, an important difficulty was the production of compressor blades. It was still precision casting process at home and precision forging abroad. At that time, Qin Guan took everyone to Luoluo company for negotiation for these technologies. With the help of Robert, the quality manager of the opposite blade workshop, Qin Guan mastered this technology.

This is only the technology of the 1960s in the western world. It is no problem to use it in Spey. However, it shows its disadvantages when it is used in the core machine of the newly developed third-generation engine.

Only the first test run, all the blades were broken!

"I said that if we want to build the engines of these three generations of engines, we can only use titanium alloy, not the special alloy of the compressor of Spey engine. That strength is not enough." at this time, Robert's voice came.

Robert has been used to life here. He gave up everything in Luoluo company, came to Hanguo and joined the R & D team of 4430 factory. Everyone also attaches great importance to him.

Robert was originally in charge of blade technology. Now, of course, it is his responsibility to have problems with the blade. If we find out the reasons in detail, it is because the materials used for the blade are unqualified!

Titanium alloy is needed!

"In addition to titanium alloy, our processing technology should also be improved. Solid blades can no longer be used. Solid fan blades have heavy weight, large centrifugal force and prominent flutter and vibration problems, which can no longer meet the requirements. Now, Luoluo company has begun to engage in the second generation of titanium alloy hollow fan blades, and we can't continue to waste time on this kind of solid blades."

"The first generation wide chord hollow fan blade of Luoluo company connects two hot blade shaped titanium plates and an inner thin-wall honeycomb sandwich by activation or liquid diffusion welding to form a sandwich integral blade. The second generation hollow blade is manufactured by advanced superplastic forming / diffusion connection process, and the core adopts Warren structure to replace the original honeycomb structure, which has many advantages The structural integrity is good. All connection interfaces are diffused and connected as a whole. The blade weight is lighter and the cost is lower. "

"But we don't have the necessary processing equipment," said Wu.