Chapter 866 Installation Targets of Domestic Large Bypass Ratio Turbofans


    ?This time, both Chang Haonan and Luan Wenjie were stunned by Ding Gaoheng''s wild ideas.


    I can only say that he is a veteran who has participated in the research and development of two bombs and one satellite. He is really good at long-term planning.


    ?When Chang Haonan was first reborn and obtained the system, he did consider things like space exploration, but his idea at that time was nothing more than landing on the moon and Mars, or establishing an outer space orbital space station.


    ?Even later, we even thought about conducting deep space exploration, and after finding a planet where we could land, we would then use technologies such as quantum teleportation to transport equipment, materials, and even living things to the past.


    ??However, farming in outer space is a somewhat simple idea in science fiction...


    It is true that it has never happened.


    “That depends on the specific conditions of the outer planet.”


    ?Chang Haonan thought seriously for a while, and then said:


    "Like Mars, the situation is relatively stable, and the main surface is sand and gravel. It can''t be said that there is no hope at all... But for some planets with harsh environments, even solid or gaseous... then there is definitely no hope, and there are also involved Plants cannot grow without soil, they also need water and oxygen..."


    “But having said that, maybe some moss or fungi and the like are not without possibility of survival?”


    ?He just said it casually at first, but later he actually analyzed it logically.


    Luan Wenjie, who was next to him, actually shook his head and said matter-of-factly:


    "The possibility is very small. Although there are indeed some anaerobic plants or microorganisms, they cannot survive under any circumstances. For example, the oxygen content in the Martian atmosphere is less than 1% and carbon dioxide is more than 98%. Even if it is really like It is currently widely speculated that there is a certain amount of liquid water, but the environment is still too bad anyway. It would be better to have an Earth-like planet..."


    Chang Haonan frowned slightly:


    “It’s already an Earth-like planet, so there’s a high probability that it already has soil similar to the Earth’s, so why bother transforming it…”


    “Hiss…it seems to be the same…”


    ??The two sang and coordinated so seamlessly that it actually made Ding Gaoheng, who first proposed the idea, a little helpless:


    “Ahem—”


    ?After coughing twice, Chang Haonan and Luan Wenjie’s attention was finally attracted again:


    “Actually, I just thought about it casually. You don’t need to take it so seriously…”


    At this moment, China is still working hard to achieve the first manned space flight. Let alone extraterrestrial planets, even the lunar exploration project has not been officially approved. It is indeed a bit early to consider what will happen after landing on extraterrestrial planets. .


    ?So this topic comes to an end.


    but.


    Although the matter of space farming is still relatively far away, Ding Gaoheng’s imagination just now has brought a lot of inspiration.


    “Actually, what I really want to say…”


    After a brief silence, Luan Wenjie broke the silence first:


    “Compared to transforming alien planets, the technology developed by Mr. Chang seems to be more suitable for exploring alien planets. At least it allows us to obtain more detailed surface information of the target from a relatively long distance...”


    ?Chang Haonan did not speak, but just listened to Luan Wenjie’s first thoughts, and then entered into his own thinking—


    ?Although extraterrestrial exploration is more realistic than landing on extraterrestrial planets, it must first be able to go to deep space.


    Those beautiful alien photos that people usually see on the Internet or in books and magazines are actually a lot of secondary renderings.


    In fact, the clarity of images observed by near-Earth space instruments such as the Hubble Telescope is generally quite poor, and there is only a single optical channel, which is simply not enough to provide data for in-depth analysis.


    ? To reduce the dimensionality of high-dimensional data, you must first have high-dimensional data.


    In short, these can only be regarded as reserved ideas.


    ?However, Chang Haonan just thought of something else.


    During the meeting at the Institute of Geology and Geophysics that day, before he proposed the idea of ??turning sand into soil, the one that actually attracted most people''s attention first was the idea of ??modifying desert sand and then partially replacing river sand for use in Building materials ideas.


    And I heard that the project application process is already underway.


    ?Of course, Chang Haonan himself has no idea of ????strengthening his career in the construction industry for the time being.


    But if we promote it...


    It is obviously more realistic to modify the covering on the surface of the moon or Mars to make it capable of being used as building materials than to grow food and vegetables in those places.


    And if you want to verify the feasibility of this road, the first step you need to do is actually no different from what it is on earth.


    Exploration, sampling, analysis.


    In other words, a return detector must be launched.


    “Having said all that, no matter what we are going to do, we still have to go to outer space first.”


    While Luan Wenjie finished speaking, Chang Haonan intervened in time:


    “I remember Director Luan mentioned in a meeting before that the space agency is planning to carry out a lunar exploration project?”


    In fact, he had never heard of it at all. He only vaguely remembered that the lunar exploration project in the previous life was probably established in the past few years.


    ? And Luan Wenjie had said so much in meetings that he usually held, how could he remember such details? He only thought that he had mentioned it during an internal meeting.


    It’s just that this time Chang Haonan talked to Ding Gaoheng.


    So the latter answered directly:


    “That’s what happened.”


    “Comrade Wenjie and Comrade Ye Jianpei, the chief engineer of the Ziyu-2 satellite, have reported to the higher authorities twice through me.”


    "Technically speaking, launching a satellite to orbit the moon, including achieving a hard landing on the moon, is basically not difficult for us. What is more challenging is the soft landing, and later the return to the earth. "


    “So the intention of our superiors is to wait until our automatic control soft landing technology has passed more tests before officially launching the lunar exploration project..."


    Chang Haonan didn''t know much about aerospace in his previous life, so he specifically brought the topic in this direction. Sure enough, he heard a lot of things from Ding Gaoheng and Luan Wenjie that he didn''t know much about before.


    ??The conversation continued for about twenty minutes, until Luan Wenjie raised his wrist to look at the time and said that he had a meeting to hold later, and the conversation ended.


    After watching Luan Wenjie leave the office, Ding Gaoheng himself left the office chair and sat on the sofa next to Chang Haonan.


    The latter immediately started making tea.


    "Xiao Chang, are you here just for space breeding?" Ding Gaoheng took the tea cup from Chang Haonan and asked with a smile.


    ?Although the few people just talked about a lot, the ocean surveillance satellites and lunar exploration were purely coincidences caused by Luan Wenjie''s presence here.


    So actually...


    Indeed it is.


    But since the leader asked specifically, Chang Haonan definitely couldn''t answer so straightforwardly.


    He nodded first:


    “Mainly for breeding purposes.”


    After a short pause, he continued:


    “But there are still some things related to the aviation development group’s business. I originally planned to report to you at the end of the year, but I’m here today...”


    Ding Gaoheng adjusted his sitting posture slightly and assumed a posture of listening attentively.


    "At this moment, the design of the Turbofan 10 is about to be finalized. Although there will still be production and finalization tasks in the future, the manpower required is much less than now, especially when other factories are sent to Shengjing to participate in the Turbofan 10 The comrades on the project will be able to return to their original units before the Spring Festival next year at the latest, so that they can take on some new projects..."


    Listening to Chang Haonan''s answer, Ding Gaoheng gradually became happy.


    In the past, his biggest headache was hearing about new projects related to aviation development.


    But now, it’s completely different.


    “Like the three new models you mentioned last year when the Aerospace Power Group was established?”


    Ding Gaoheng asked:


    “I remember that there seems to be a high-power aeroderivative gas turbine, a large bypass ratio turbofan engine, and a... 1600kw-class turboshaft?”


    “Yes, you remember correctly.”


    Chang Haonan affirmed:


    "The first naval gas turbine, which I have contacted with Institute 701 before, is prepared for future domestically produced main surface ships. The third turboshaft engine... We still have relatively few technical reserves in the turboshaft aspect. In addition, there are not many people sent by Southern Dynamics, and their capabilities are relatively weak, but they are not that fast. "


    “This is just the second project. The large bypass ratio turbofan... still needs to find a suitable installation target.”


    ?This time, Ding Gaoheng understood clearly—


    The aero-engine project was established independently of the aircraft model, but it just got rid of its vassal status in the past.


    It does not mean that aviation development development should be disconnected from aircraft models.


    Once an engine is built, it must be installed on an airplane to be considered a real success.


    ??But after all, Chang Haonan is no longer a member of the Aviation Industry Group, and it is difficult for him to directly direct the work of his brother units.


    So, this is for my own project.


    “Can’t it be directly replaced with C909?”


    Ding Gaoheng asked:


    “Anyway, when our large bypass ratio turbofan is developed, C909 should also be domestically produced.”


    “Not very good.”


    Chang Haonan shook his head:


    “The C909 was designed to adapt to the PS90A, which has a relatively small diameter. Changing to a larger size aircraft engine will cause safety risks.”


    "In the long run, we will definitely design a new passenger aircraft of the same level as the Airbus A320 or Boeing 737 from scratch. However, Hufei''s research and development capabilities are currently relatively average, and almost all of its efforts are used in the localization of the two models. Above, I am afraid there will be no extra energy in a short period of time, and the new passenger aircraft is equipped with a new engine, which may inevitably cause concerns for the airlines. "


    “So I thought it would be better to let this model stand the test on military aircraft for a period of time.”


    The aviation field is different from most other fields. The requirements for reliability, maintenance hours, and safety of civilian aircraft are much more stringent than those of military aircraft.


    Especially for the international aviation market, China is still a new player.


    Furthermore, mainline passenger aircraft also involve airworthiness certification issues.


    In short, military aircraft have less worries.


    “Military aircraft that use large bypass ratio turbofans...basically only military transport aircraft.”


    Ding Gaoheng thought:


    “But strategic transport aircraft like the IL-76 or C17 may not be available in the short term..."


    “You can make it smaller.”


    ?Chang Haonan said the plan he had thought of for a long time:


    “Our level of structural design and aviation materials is not yet sufficient to support the development of a 200-ton transport aircraft, but those using turbofans do not necessarily have to be heavy-duty transport aircraft.”


    "The new generation of medium-sized transport aircraft can also use two high-thrust turbofans instead of four turboprops to achieve a maximum takeoff weight of 80-90 tons and a payload of about 25 tons. This will make the maintenance easier and the flight comfort better. "


    “On the one hand, it is for self-use, and it can also compete with the alternatives of An-12 and C130 in the international market. On the other hand, it can also accumulate some experience for the research and development of future 80-ton mainline passenger aircraft.”


    ?This idea of ??using twin turbofans to replace four turboprops would have been relatively rare in 2000.


    But after 2010, it will basically become the preferred object of all countries around the world.


    ?For example, the KC390 developed by Embraer has almost become the first choice among aircraft of the same class in the 2020s.


    The Netherlands, Hungary, Portugal, South Korea, and even the US Air Force are all very fond of this model.


    Although Huaxia’s products are unlikely to be sold in the United States, other markets can still compete.


    After all, even Rafale’s engines use Chinese technology.


    ?The sensitivity of transport aircraft is still much lower than that of main battle equipment...


    (End of this chapter)