The sand swallowing test was completed, and the engine returned to the assembly workshop for decomposition. The decomposition work went very smoothly. In just one day, the entire engine was decomposed into parts. After each part was cleaned, it was placed on the inspection table one by one to start careful inspection of the parts.

Several inspectors inspected very carefully, especially the appearance of parts, and did not miss a single place. Every part, especially rotary parts, was inspected very carefully.

Even from time to time, I took a flashlight and took a careful look. As we all know, this engine has just completed the sand swallowing test and checked the surface of the parts, especially the axial flow impeller and the centrifugal impeller, more carefully.

"Old Zhang, it's really unbelievable. The axial flow impeller I checked did not have any traces of being injured by sand and dust, and there was no trace at all."

"Yes, I checked the centrifugal impeller just now, but I didn't find any traces of being injured. Not to mention the damage, there was no trace of being scratched."

The two inspectors were full of emotion and were very happy. The engine passed the sand swallowing test and was completely unscathed, which was enough to make people happy and proud.

When the inspection of the engine parts was almost completed, Li Tianfeng came to the assembly workshop and personally looked at a few key parts. After reading them, he nodded.

The inspector in charge, Lao Zhang, said happily: "Mr. Li, the parts are in very good condition and no damage was found to occur in any parts."

The situation was good, and Li Tianfeng was delighted, which shows that this engine is very outstanding in terms of safety performance.

Li Tianfeng said: "Does the weight of sand and dust inside the drum shaft be weighed?"

In a turbine shaft engine, there is generally a part called a drum shaft. The function of this part is to absorb sand and dust into the engine and store it in the drum shaft. This engine from Tianfeng Technology also has such a part.

Every time the engine is overhauled, the drum shaft will be removed and carefully cleaned, the sand and dust inside will be cleaned out, and the cleaned sand and dust will be weighed and the weight will be recorded.

The supervisor inspector Lao Zhang said: "The sand and dust inside the drum shaft has been cleaned up and weighed, and the weight is 1.26 grams."

Li Tianfeng said: "Sand swallowing test. In just two minutes, there was still a lot of sand and dust. In the actual working state of the field, it was impossible for the engine to inhale so much sand and dust at once."

The engine is subjected to sand swallowing tests on the test drive table. The concentration of sand and dust is relatively high. In actual work outside, even if it encounters sand and dust everywhere, it is impossible to reach this level.

A turboshaft engine works outside until one overhaul period. The engine is sent back to overhaul, and the sand and dust in the drum shaft is only 3 or 5 grams.

Li Tianfeng thought to himself that if you conduct sand swallowing tests at such a concentration, there will be no abnormality in the engine. If you use it outside, there will be no abnormality. Inhaling a little sand and dust will not have a great impact on the engine.

In the assembly workshop, Li Tianfeng carefully watched some key and important parts himself, and then looked through the inspection records of several inspectors. Then he left the assembly workshop with satisfaction.

After the engine successfully carried out ice-swalking and sand-swalking tests, some other projects were then verified and tested, and no problems were found.

Everyone is full of energy and the engine is so powerful and so excellent that everyone seems to see hope.

Originally, everyone was holding their breath and stimulating. Now, the engine is in good condition, and everyone seems to have been doped. The entire Tianfeng Technology Company is also full of positive progress.

Li Tianfeng was slightly moved and happy when the employees were like this. In the name of successfully completing the test runs one after another, Li Tianfeng generously sent a red envelope of 1,000 yuan each. After receiving this thick red envelope, everyone was more motivated.

After the engine was tested for several projects in succession, there was no problem. The engine was assembled again and started a 150-hour long-lasting test.

On the day the test run began, Li Tianfeng was at the test run site and stayed at the test run site for most of the day before leaving. Before leaving, Li Tianfeng also explained many precautions for Qiu Wen'an's test run to ensure that the 150-hour long-lasting test run was successful.

It took a while for such a long test run from the beginning to the end. During the test run, Li Tianfeng basically took a look every day. During the rest of the time, Li Tianfeng devoted himself to his work and worked hard, and Tianfeng Technology also developed rapidly.

The batches of parts with excellent processing quality were continuously sent to Pratt & Whitney, Harry Potterton, or to E Factory or to Jiufang Locomotive Parts Company. Because of the excellent quality of parts, Tianfeng Technology Company has received unanimous praise from customers.

Even, it may be because I heard that the parts processed by Tianfeng Technology Company are of excellent quality, a domestic aviation company came to me and signed a processing agreement of tens of millions of yuan with Tianfeng Technology. Tianfeng Technology also began to process parts for this aviation company.

The controversy over the upper level about Tianfeng Technology's engine is far from finalized, and the engine's project establishment has also come to a deadlock.

Recently, Li Tianfeng has also learned some scattered situations through various channels. He knew that the controversy was at the top and he could do nothing. All Li Tianfeng could do was to hold his breath and work hard to develop such an engine.

The important sign of development is that the engine successfully completes 150-hour long-lasting test run and 300-hour long-lasting test run, and then assembles its first prototype.

The first two engines for the test run can only be said to be verification machines, but the test run ends and the 300-hour long-term test run ends, and the design can be basically finalized and can only be produced and manufactured. Of course, design and finalization are just an internal statement from Tianfeng Technology. The real design and finalization of an engine must be approved by the superior competent department.

In his office, Li Tianfeng thought about a lot of questions. Now, Li Tianfeng has basically figured it out. There is controversy among the top leaders and is far from concluding. It may be largely a wait-and-see, wanting to see what the engine will be like in the end.

Li Tianfeng believes that perhaps, if his engine is successfully developed and successfully developed, the first prototype will become an important bargaining chip, at least it is an important bargaining chip to support the delegation, so Li Tianfeng cannot do it without working hard.

Just thinking about his own engine, Li Tianfeng's cell phone rang. When he saw the caller ID, Li Tianfeng felt warm.

"Ruo Bing, do you miss me?" Li Tianfeng joked with a smile on his face.

Wang Ruobing said: "Tianfeng, I haven't seen you for so long. I really miss you a little. However, today I called this to tell you something serious."

Li Tianfeng said: "Oh, what's the matter?"

Generally speaking, the two people have a deep love relationship, and they often make phone calls. Unexpectedly, Wang Ruobing said it was a serious matter, and Li Tianfeng was slightly surprised.

Wang Ruobing said: "Tianfeng, I heard about you. Your engine has encountered resistance to applying for national project approval."

Li Tianfeng said: "Yes, there is a lot of resistance, but we have been working hard to successfully develop this engine."

Wang Ruobing said: "Tianfeng, why don't I call my grandfather and ask my grandfather to say something for you. I'm sure that as long as my grandfather is willing to say something, everything will be settled and there is no possibility of argument."

During this dispute, Wang Guohong has always held a neutral view, expressed no opinions, neither opposed nor agreed, but just watched. Even if the dispute reached Wang Guohong's ears, Wang Guohong had the same attitude.

In Wang Ruobing's opinion, his grandfather was in a high position, and with just one sentence, the dispute below would cease, because the dispute was at the level of the ministries and commissions, and it had not reached the level of Wang Guohong. If someone like Wang Guohong came out to speak, who would dare to continue to argue?

Li Tianfeng knew that Wang Ruobing was caring for him and felt a little bit in his heart, but he could never accept his own affairs if he had to rely on a woman to come forward.

More importantly, Li Tianfeng and Wang Guohong had a bet at the beginning, and they bet on this engine. Now, at this time, Wang Ruobing asked Wang Guohong to ask for Wang Guohong, and Li Tianfeng felt that it was absolutely impossible.

So, Li Tianfeng said: "Ruobing doesn't need you to come forward, nor does you need to beg grandpa. I believe that the engine project will eventually be concluded."

Then, Li Tianfeng and Wang Ruobing chatted for a long time. Li Tianfeng had a clear attitude and wanted Wang Ruobing to come forward. In addition to talking about these, Li Tianfeng also asked Wang Ruobing about life and study.

After the call, Li Tianfeng thought to himself that his engine must be successful and must be developed as soon as possible. Various test runs must be carried out quickly, and the prototype must be produced as soon as possible.

………

A 150-hour long-lasting test run is underway.

Such a test run is another severe test for the engine. The subsequent 300-hour long-term test run will be even more severe. Only after these two test runs can the engine be considered to be a basic successful development.

On the test drive table, the engine works stably, and in the test drive monitoring and control room, several test drive runners were fully focused, and several test drive craftsmen did not dare to relax at all. As the chief designer of this engine, Qiu Wen'an often appears at the test drive site.

Such a test run is also a test for everyone's work. Everyone has to make a large number of test run records every day and organize various test run data. Fortunately, the test run is not a continuous test run for 150 hours. The test run time is about several hours a day, and the cumulative total reaches 150 hours. During the intermittent period, everyone has a certain amount of time to sort out the data.

………

The third update will be continued today, and the first update will be given. (To be continued...)
Chapter completed!