After the completion of the sand swallowing test, the engine returned to the assembly workshop for decomposition, the decomposition work was carried out very smoothly, in just one day, the whole engine was decomposed into parts state, and after the parts were cleaned, they were placed on the inspection table one by one and began to carefully inspect the parts.

Several inspectors inspected very carefully, especially the appearance inspection of the parts, and did not miss any place, and every part, especially the rotating parts, was inspected very carefully.

Even, from time to time still holding a flashlight, take a careful look, take a serious look, as you know, this engine has just completed the sand swallowing test, the surface of the parts, especially the axial flow impeller, centrifugal impeller surface inspection is more careful.

"Lao Zhang, it's unbelievable, the axial flow impeller I checked didn't have any traces of being injured by sand and dust, not the slightest trace."

"Yes, I also checked the centrifugal impeller just now, and I didn't find any traces of injury, not to mention injury, not a single trace of scratch."

The two inspectors were full of emotion, and their hearts were also very happy, the engine was unscathed through the guò sand swallowing test, which is enough to make people happy and proud.

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

Lao Zhang, the inspector in charge, said happily: "Mr. Li, the condition of each part is very good, and no damage was found in any parts. ”

The situation is good, Li Tianfeng is happy, which shows that this engine is very good in terms of safety performance.

Li Tianfeng said: "Is the weight of the sand and dust in the drum shaft weighed?" ”

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

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

Lao Zhang, the inspector in charge, said: "The sand and dust in the drum shaft have been cleaned out and weighed, and the weight is 1.26 grams. ”

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

The engine is tested in the test bench for sand swallowing, and the concentration of sand and dust is relatively high, and in the actual work outside, even if it encounters sand and dust in the sky, it is impossible to achieve such a process.

A turboshaft engine that works outside until a major overhaul period. The engine was sent back for overhaul, and there were only three or five grams of sand and dust in the drum shaft.

Li Tianfeng thought in his heart, such a concentration of sand and dust for the sand swallowing test, the engine is not a little abnormal, then when it is actually used outside, there is no abnormality, inhaling a little sand and dust, will not have a great impact on the engine.

In the final assembly workshop. Li Tianfeng personally carefully looked at some of the key and important parts, and looked through the inspection records of several inspectors. Then leave the assembly workshop satisfied.

After the engine was tested for ice and sand swallowing, and then some other items were tested for verification, and no problems were found.

Tianfeng Technology Co., Ltd., everyone is full of energy, and the engine is so powerful. It's so good, everyone seems to see hope.

Originally, everyone was holding their breath and drumming up a lot of energy, now. The engine is in good condition, everyone seems to be stimulated, and the entire Tianfeng Technology Company is also full of positivity.

The employees are like this, Li Tianfeng was slightly moved and happy, in the name of the completion of the test run one after another, Li Tianfeng generously sent a red envelope of 1,000 yuan per person, and everyone was more motivated to get this thick red envelope.

After several validation tests of the engine, the engine was assembled again and the 150-hour test test began.

On the day of the start of the test, Li Tianfeng personally at the test site, stayed at the test site for most of the day before leaving, before leaving, Li Tianfeng also explained a lot of precautions for Qiu Wen'an's test to ensure that the 150-hour long-lasting test was a complete success.

Such a long test run, from start to finish, takes a while. During the test run, Li Tianfeng basically came to see it every day, and the rest of the time, Li Tianfeng devoted himself to his work and worked hard, and Tianfeng Technology was also developing rapidly.

Batches of parts, with excellent processing quality, are constantly sent to Pratt & Whitney Company, Harry Burton Company, or sent to Factory E, sent to Jiufang Locomotive Parts Company, because of the excellent quality of parts, Tianfeng Technology Company has been well received by customers.

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

The controversy at the upper level about the engine of Tianfeng Technology is far from conclusive, and the project of the engine has also reached an impasse.

Recently, Li Tianfeng has also learned about some scattered situations through various channels, knowing that the controversy is at the top level, and there is nothing he can do, what Li Tianfeng can do is to hold his breath and work hard to develop such an engine.

An important hallmark of the development was the completion of a 150-hour test run and a 300-hour test run before assembling its first prototype.

The first two test engines can only be said to be a verification machine, but the verification test is over, and the 300-hour long-lasting test is over, the design can be basically finalized, and the first prototype can be produced and manufactured.

In his office, Li Tianfeng thought about a lot of questions, and now, Li Tianfeng has basically thought clearly, there is a high-level controversy, far from a conclusive conclusion, maybe a lot of Cheng Dù is on the sidelines, wanting to see what will happen to his engine in the end.

Li Tianfeng believes that perhaps, if his engine is successfully developed, when the first prototype is manufactured, it will become an important bargaining chip, at least an important bargaining chip for the support faction, so Li Tianfeng will not work hard without effort.

was thinking about his engine, Li Tianfeng's mobile phone rang, and when he looked at the caller ID, Li Tianfeng's heart warmed.

"Ruobing, 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, but I made this call today to talk to you about something." ”

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

Under normal circumstances, the two are more of a child, and they often make a pot of porridge on the phone, but unexpectedly, Wang Ruobing said that it was a serious matter, and Li Tianfeng was slightly strange.

Wang Ruobing said: "Tianfeng, I heard about you, and your engine has encountered resistance to applying for the national project. ”

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

Wang Ruobing said: "Tianfeng, if I make a phone call with my grandfather, ask my grandfather, and ask my grandfather to help you say a word, I am sure, as long as grandpa is willing to say a word, the dust will settle down, and there will be no possibility of arguing." ”

In this controversy, Wang Guohong has always held a neutral point of view, did not express any opinions, neither said against nor in favor, just watched from the sidelines, even if the controversy reached Wang Guohong's ears, Wang Guohong also had such an attitude.

In Wang Ruobing's view, his grandfather is in a high position, as long as he says a word, the controversy below will stop, because the controversy is at the level of the ministry and commission, and it has not yet reached the height of Wang Guohong.

Li Tianfeng knew that Wang Ruobing was caring about himself, and he felt for a while in his heart, but when he thought that he had to rely on a woman to come forward in his own affairs, he couldn't accept it.

What's more, Li Tianfeng and Wang Guohong had a bet at the beginning, and the bet was on this engine, and now at this time, Wang Ruobing wants to ask Wang Guohong, and Li Tianfeng feels that it is impossible.

So, Li Tianfeng said: "Ruobing, I don't need you to come forward, and I don't need you to ask grandpa, I believe that the matter of the engine project will eventually be decided." ”

Then, Li Tianfeng and Wang Ruobing chatted for a long time, Li Tianfeng's attitude was clear, that is, he didn't want Wang Ruobing to come forward, in addition to chatting about these, Li Tianfeng also asked Wang Ruobing about some things in life and study.

After ending the call, Li Tianfeng thought in his heart that his engine must be successful, it must be developed as much as possible, all kinds of test runs must be grasped quickly, and the prototype must also be made as much as possible.

………

The 150-hour endurance test run has been underway.

Such a test is a severe test for the engine, and the subsequent 300-hour long-lasting test test will be more severe.

On the test bench, the engine works steadily, and in the test monitoring and control room, several test workers are engrossed, and several test technicians do not dare to relax at all, as the chief designer of this engine, Qiu Wenan often appears at the test site.

Fortunately, the test run is not a continuous test run for 150 hours, the test time is about a few hours a day, and finally the cumulative number reaches 150 hours.

………

Today, we will continue to see three more, and the first one will be sent. (To be continued......)