Seeing that this little guy is running smoothly, the people who participated in the test are amazed, it turns out that the turbojet can be so simple, and today is an eye-opener.

And the designers of this little guy are also hugging each other, this little guy was designed by the six of them, and it took a month of hard work, and it was finally not in vain.

"Well, the first step is a success, now let's wait for the next step of the gas-liquid fuel conversion, if it can be converted to use liquid fuel, it is really possible."

To appease these young men who were still excited, Yang Hui continued to watch the engine test, and he couldn't be too happy without the final announcement that the test was successful.

The excitement here did not disturb the staff in the test, and they continued to test the little ones running wildly on the bench according to the established procedures.

"Okay, all the temperature indicators to meet the requirements for switching to liquid fuels, ready for fuel switching."

With Director Chen's order, the tester slowly turned on the fuel switch, and the diesel-gas mixture began to flow down the fuel supply pipe to the combustion chamber. When the fuel arrives at the evaporation tube in the combustion chamber, the evaporation tube, which has already reached a fairly high temperature, directly evaporates the oil, and the evaporated fuel in the combustion chamber participates in the combustion together with the oxygen in the air.

In combustion, the supply of propane is constantly reduced, and the evaporated liquid fuel is constantly increased, and finally the supply of propane is completely cut off, and the fuel burned in the combustion chamber becomes liquid diesel gase.

At this time, the first person to speak was not Section Chief Chen, but a staff member in charge of propane control, who was the first to know that the engine had completely cut off propane.

"Well, the engine has fully transitioned to liquid fuel, and this time it's all start-up."

"Okay, continue to monitor the operation." After completing the start-up work, naturally there is no need to have so many people around the workbench, Section Chief Chen evacuated the people, while he continued to monitor the operation status, if there was a problem with the operation, he would immediately cut off the fuel supply, and now he is standing next to the fuel console.

The testers who came out of the console came to Yang Hui and the six designers in front of them, and congratulated Yang Hui and them. "Congratulations, there should be no problems with the engine, your maximum design has only forty minutes of continuous operation, and there should be no problem."

"Thank you, this result of everyone's joint efforts, we will have to see your test results later, and we must work together."

Not only aero engines, other complex industrial design achievements, are the results of team design, like the first and second industrial revolutions, an engineer is multi-tasking, one person to design such a legendary column of industrial machinery is almost impossible.

"Definitely, we must do the test work as soon as possible, this is also our job, and we must strive to finalize it as soon as possible."

Forty minutes of testing is relatively fast, although in the eyes of the six designers, it is a long time. But fortunately, the final test was considered a success, and Section Chief Chen saw that the time was up, and decisively cut off the fuel supply.

Without the supply of oil, the combustion could not continue, and the little one could not continue to operate, and slowly the rotation speed slowed down until it completely stopped, and there was no failure.

The whole engine starts, continues to run in the working state, and then to the final stop, there is no problem in the whole test process, and the continuous operation time required by the design is reached in the first test run, which shows that the design of the whole engine is a very good design.

The whole test was successfully completed, and Section Chief Chen came over with a smile on his face and just shook hands with Yang Hui. praised without hesitation. "Very nice design, it performed so well for the first time."

Then he pondered for a long time as if he was thinking about something, and finally his face relaxed, as if he had decided something. He spoke again, "Count it out, this small turbojet designed by you young people is the first real engine designed by ourselves in our firm, if it is successfully finalized this time, this engine is destined to go down in the history of the second institute, and the weight will not be low." ”

This evaluation is really not low, but it is a fact, and the engines designed by the two institutes are still imitations. So now this small turbojet is about to plant the crown of the first self-designed engine.

"This is still a bit of a fluke, we can't compare with those big guys in the institute, and now we still have a long way to go." Yang Hui said this half modestly, half sighed.

Hearing this young but somewhat old engine project leader, Section Chief Chen didn't know how to continue to say anything, so he had to move on to the follow-up test of the engine here.

"Now the temperature should be down, let's go, take the engine off and see how the parts are now."

The engine does not mean that even if the test run is completed here, there is still a lot of test work to follow. Now, taking the engine apart and inspecting the wear of the parts is one of the processes.

Yang Hui was the first to rush up, took off the engine, picked up the tool placed next to him, and skillfully disassembled the engine again, just disassembled the starting motor Yang Hui asked A burning smell, and a bad feeling came to his heart, is the starting motor burned out?

Nervously, he opened the cover of the starter, and the smell of burnt rubber spread in an instant, permeating the small space. Those who were closer all asked about the pungent smell of burning.

Yang Hui was relieved to see that the motor was burned out, the source of the burnt smell was the connection between the motor and the engine spindle, the rubber at the junction had been burned and could not be seen from the original, and the entire connection was two lumps of coke.

"It's a big problem to burn like this. If this problem is not solved, the whole engine is a disposable product, and if you want to use it again, I am afraid that the only way to replace the rubber gasket is to replace it again. The person who spoke was the middle-aged and elderly technical backbone who called himself Lao Wen, and his eyes were quite vicious, and he could see the design principle of this engine at a glance, and he could see the starting method of the turbojet very clearly.

"It's this problem, in order to make the design simple, we used a rubber washer, and the two washers moved back and forth to contact and fasten the spindle to rotate, but I didn't expect there to be a problem here" So many people here are curious, Yang Hui said Long Derong's design ideas to everyone.

Hearing the design principle here, I began to think about what was going on, some were surprised that the design idea was ingenious, and some were puzzled, and it stands to reason that this design will not be a problem. Why did it burn out?

"Let's take everything else apart first, maybe the cause of the problem is not here." Years of experience in testing told Section Chief Chen that the problem can be seen from the overall point of view, and it is necessary to disassemble all the engines first.

Hearing Section Chief Chen's reminder, Yang Hui put the starting system aside, and once again used the tools to continue to unload the small vortex spray, trying to find out where the cause of the accident was.

But to Yang Hui's disappointment, he didn't find out the problem with the engine even if he disassembled the entire engine into parts. Now it is a dead end, the engine starting system problem cannot be found, and there is no way to carry out the follow-up tests here.

At this time, Long Derong had a headache with the entire starting system, this thing was designed by him, at that time, the connection method of the motor output shaft and the turbojet spindle was still a design that he had been proud of for a long time, according to his design, the engine can no longer need a bulky shaft clutch, and the lightweight rubber can reduce the weight of the entire engine a lot, but now the situation is beyond his expectations, the whole engine is fine, but there is a problem with the coupling here.

This is considered to be off the hind legs of the project, I knew that it was better not to use this program, the use of mechanical couplings will not be a problem, the first time I encountered my own design problems off the project hind legs, Long Derong, who just joined the work, now regrets that he used this radical and bold program.

Seeing that everyone is staring at each other now, can anyone figure out what the cause of the accident is, Yang Hui has to stand up and rectify his own design team at this time.

"Well, the problem is still here, and just looking at it won't solve the problem. The design team, back to the office, time is pressing, all of them are working overtime tonight, and this problem must be solved. ”

With Yang Hui's order, several young people in the design team came back to their senses and quickly packed all the engine parts, ready to take them back to check the problem.

Watching the six young people who designed this small vortex jet leave, Lao Wen and Section Chief Chen stood together, and a kind of expectation rose in their hearts, there are such offspring who can fight in an research institute, and a bright future is just around the corner.

"The future of the institute is promising, these young people have ideas and creativity, and they are really promising."

Section Chief Chen also stood at the door, and continued with Lao Wen's words: "Yes, not only can he engage in technology, but he also has a leader with leadership charisma. ”

Lao Wen also nodded in agreement.