Chapter 969 shocked French Chicken for a whole year!


    at the same time.


    France, Paris.


    Snecma Group.


    ?Assistant Arthur Mondock placed a test report on Ian Vista’s desk:


    “Doctor, this is the test report of the sample, please take a look.”


    ??Although Vista and Liu Yongquan have said before, the test will not be completely completed until the end of this month.


    But in fact, he still left himself some room for maneuver.


    In fact, starting a few days ago, the testing work has entered the last step, which is the operating temperature test.


    According to Vesta''s schedule, if everything goes well, the results will probably be available within the next two days.


    ?As long as it is completed, the report can be signed and handed over to the Chinese people so that they can start the next stage of research and development.


    “Finally the results are out…”


    He looked at the folder on the table and couldn''t help but breathed a sigh of relief.


    Immediately afterwards, I am ready to briefly check the results and then sign.


    ?However, when Vesta was actually about to open the report, he suddenly realized that his mentality at this time seemed a bit complicated.


    On the one hand, the core engine of the M88-3 can be said to be the flagship product of the Snecma Group in the field of turbofan engines for at least the next 10-15 years. It is best if everything goes smoothly.


    ?Especially if the SeA series engines can break the monopoly of Rolls-Royce and Honeywell in the field of business jets, Vesta himself, as the project leader, may also take a further step within the company.


    But on the other hand, he had a little expectation in his heart.


    Looking forward to the Chinese design making mistakes in some less important places—


    Since this report can be sent to him, it means that there must be no problem in the important places.


    The main reason is that the other party’s design efficiency is really beyond the norm.


    During the previous time in China, Vesta even felt that the professional experience he had accumulated over the past few decades was challenged.


    In this case, it seems more reasonable to have questions...


    With this awkward mood, he took a deep breath and suddenly opened the folder in front of him.


    On the cover, there is only one title.


    《M88-3 Turbine Disk and Turbine Blade Sample Test Report》


    Vesta already knew the overall condition of the engine by heart, so he skipped the previous nonsense such as the model introduction and turned directly to the test results.


    “Dimensional specifications, by…”


    “Mass distribution, by…”


    “Tensile strength in the cooled state, by…”


    …”


    …”


    As expected, several pages of content all meet the requirements.


    The results of some of the installed equipment tests are somewhat different from those when Huaxia tested the blades alone, but this is a normal difference caused by different working environments, and it does not exceed the specified performance range.


    It can be said that even if you want to find fault with the eggs, there is not much room for maneuver.


    “It turns out to be...really...”


    ?Vesta sighed helplessly while turning the pages.


    He already doesn’t know how to organize words.


    The entire model, from design to production, completely exceeded his expectations.


    The same goes for performance.


    "Um?"


    Just when he was about to restructure his mentality, he suddenly found a corner mark in the upper right corner of the "Operating Temperature" entry on the next page.


    Generally speaking, this means that there is an issue that requires additional explanation in a comment.


    ?Vesta frowned, feeling somewhat conflicted.


    ?However, the movement of his hand was not slow at all, and he turned directly to the last page——


    Generally speaking, the annotation content will be marked here.


    He quickly found what he was looking for: "Note 1: 1840K is not the maximum working temperature of the sample, but it already meets the testing requirements. Further testing requires replacing the combustion equipment before proceeding."


    “Not the maximum operating temperature?”


    ?Vista hesitated for a moment, raised his head and prepared to ask Mondoc about the specific situation.


    ?However, the latter had been paying attention to Vesta''s situation for a long time, and before he could ask the question, he answered directly:


    “Currently, our test equipment can only obtain a stable combustion temperature of 1840K. If it is set to above 1850K, the data will be very unstable.”


    "Engineers conducted a round of testing using a setting of 1880K. The actual temperature has been fluctuating between 1820K and 1870K. The results showed that the submitted samples could withstand temperatures within this range under working conditions. However, the conditions did not meet the test standards. , so I didn’t write it in the report..."


    ?After hearing this, Vesta was dumbfounded.


    ?)


    “Does this mean our test conditions are too conservative?”


    When setting the technical specifications of M88-3 before, both parties decided to increase the operating temperature by 100K. Vesta already felt that this was quite an exaggeration.


    After all, without replacing the turbine base material, it is very difficult to achieve a vortex front temperature increase of more than 100K by means of heat insulation and heat dissipation alone.


    Basically, there must be cooling technology that is more than one generation different.


    ??If the Chinese come up with a radical impact cooling, or use a double-wall design, that would be relatively normal.


    But for both air film cooling, there can be such a big performance gap...


    At least in past theories, it was almost impossible.


    Now, the iron-clad experimental results are in front of him.


    ?That can only mean one thing.


    It is the past film cooling calculation method, which has problems.


    “No wonder they designed it so fast…”


    ?Vestal felt that he seemed to be close to the truth——


    The Chinese people should have developed a film cooling theoretical system that is different from the current mainstream, thus surpassing other countries at the most basic research level.


    Otherwise, if we rely solely on engineering experience, it would be impossible to overtake the established aviation powers in such a short period of time.


    ?Mundok, who was standing opposite, naturally didn''t know about Vesta''s brainstorming, and just answered the questions the former had just asked step by step:


    “Yes, but did the person in the test workshop tell me that if you want to obtain a higher stable combustion temperature, you must either replace the fuel nozzle with a better atomization effect, or replace the fuel with a higher combustion temperature...”


    ?Vesta waved his hand:


    “There is no rush to measure higher temperatures for now. The turbine front temperature settings of M88-3 and SeA650 are between 1830-1850K. The measured temperature of 1840K is in line with the design standards.”


    “Now it is enough to know that the film cooling technology developed by the Chinese people has the potential to be further improved..."


    He said slowly while touching his chin.


    ?At present, due to the significant reduction in the expected M88-2 order quantity, coupled with the addition of an unexpected SeA project, Snecma is already relatively tight in terms of funds.


    Therefore, for Vesta, as long as it can complete the task at hand, there is no need to create extraneous matters.


    For further work, it will not be too late to wait until we see money back from these two models.


    "Doctor, since there is no problem with the test results, should we simultaneously report the situation to China Aerospace Power Group...and of course Dassault?"


    ?Mondoc saw that Vesta was slow to give further instructions, so he had to take the initiative to ask.


    “Dassault can notify them immediately so that they can prepare to test the Rafale in the technical state of the F2. After the hot-end modification is completed, I estimate that it will be installed soon..."


    As Vesta answered, she tapped her fingers lightly on the table:


    “The Chinese side will wait a few more days. What I told them before was that it would end around the 25th... It’s not good to go too early...”


    "clear."


    ?Mondoc nodded, then turned around to leave.


    But he was stopped by Vesta from behind:


    "etc."


    "PhD?"


    ?Mondoc stopped in his tracks.


    “I remember that in addition to Rafale, Dassault is also selling the Mirage 2000-9, a deeply improved version of the Mirage 2000, to several countries. By the way, could you please ask them if there is any need to continue to increase the thrust of the M53 engine?”


    As he spoke, Vista pulled out a few pieces of paper from the small bookshelf next to him. On them were printed numerical calculation results, with a lot of handwritten content next to them:


    “I did some calculations during this period. If we use the experience we gained from studying the M88-2 engine to improve the M53 engine, we can probably increase the thrust by about 5% without affecting stability and life.”


    (End of this chapter)