Chapter 7 The plan is finalized [Kneel down and beg to read]
“On the contrary, the reason I didn’t choose this plan is that it has too many changes.”
Chang Haonan made Zhang Man happy with just one sentence The smile froze on his face.
“Remember what I just said, it must be based on the existing mature technology. Although this enlarged version of the solution does not seem to change much in appearance, if it is implemented in manufacturing, the entire body will change, and it will also A stronger aero engine is needed, which is not in line with our principles."
The face of Zhou Shuwan next to him finally looked a little better. He didn't care much about his idea being rejected, but he was just worried that Chang Haonan was really. misunderstood him.
"After all, we have received some professional training. When we see a design drawing, we can't just rely on intuition to see the appearance like we did when we were freshmen. We should be able to think of something deeper." After Chang Haonan said this, he looked up. Zhang Man glanced across from him.
“Hey, I can see something profound. It’s not like you don’t know it. I have never scored 80 points in any professional course except English. For technical matters, just listen to Nanshen. "Zhang Man, do you have any other plans?"
Wu Yifan's words eased the situation just right, not only giving Zhang Man a step down, but also avoiding too much trouble between her and Chang Haonan. stiff.
After being beaten a little by Chang Haonan, Zhang Man quickly returned to his original bright and bright expression, as if nothing had happened, but he did not make any small moves, and just pulled out the last A piece of information.
Actually, compared with the previous two real documents, what Zhang Man showed this time was just two photos.
"There is another one here. It is a technical verification aircraft of the MiG Design Bureau. It is called Ye8. There is no detailed information. From the photo, it seems that the nose air intake has been directly changed to the belly air intake, and additional A pair of front wings..."
Before Zhang Man finished speaking, Chang Haonan directly picked up one of the photos and looked at it.
Ye8 The aircraft itself has more changes than the MiG-21, and also involves the issue of three-wing control. It is also not a design that can be completed in a short time, but the pictures on the table helped him recall A less popular improved version of the J-7 - J-7FS.
An improved design that changes the nose air inlet of the J-7 to a mandibular air inlet, but leaves the rest of the fuselage, especially the rear fuselage, unchanged.
Since this project was completely self-funded by 611 Institute and had no initial users, and the research on the mandibular air inlet was not in-depth enough at that time, only one prototype was built for flight testing and then it was discontinued. The following.
However, Chang Haonan knew that the potential of this improved model was actually quite large.
More importantly, the research on the mandibular air intake itself is of great significance.
Because future air-breathing hypersonic aircraft will also use air inlets with similar structures but more advanced ones.
Before Chang Haonan was reborn, he was preparing to test a hypersonic missile design using a mandibular three-dimensional inverted inlet at Base 29.
According to the timeline, this modification should not have come out in 1996, or it might not even have started.
"Improve the air inlet design of the J-7 aircraft so that it can adapt to larger-sized radars and ensure that the flight performance is at least not weaker than the original model.
The specific idea is to change the nose air inlet Changed to a dual-module mandibular air inlet to free up space in the nose for the radome. At the same time, the radome can be used as a cone front body and integrated with the air inlet to achieve first-level compression of the incoming flow and provide direction orientation. The air inlet achieves secondary compression of the airflow, which is an internal compression method directed toward both sides and upwards, while the rest of the body remains unchanged. ”
< br>As Chang Haonan's ideas continue to improve in his mind, the system also gives new prompts:
[It consumes technology points to improve the project: 8 points, and directly gives the project results to consume 80 points. Point, are you sure to carry out the J-7 aircraft inlet improvement project? 】
"Confirm!" Almost the same as yesterday, the moment after Chang Haonan confirmed the project, a massive amount of information appeared in his memory almost in the form of imprints. Although he had not been exposed to much knowledge for many years, But it feels as if it has been used thousands of times before.
In other words, the system can not only provide specific steps to complete a project, but can even improve Chang Haonan's related abilities at the same time.
And this ability will not disappear with the completion of the project. For example, the ability he acquired yesterday to skillfully operate fluid dynamics simulation software of this era and directly write programs in Fortran language to solve partial differential equations still exists.
It’s just that if you want to achieve inhuman operations with incredible efficiency like yesterday, you still have to rely on the buffs provided by the system for ongoing projects.
"Haonan, are you going to choose this one?" Zhou Shuwan also took another photo and looked at it: "But isn't the design change of this three-wing surface even bigger?"
"No, it's just the idea and the That’s about it.” Chang Haonan shook his head
“Ye8’s plan is to design the air intake in the belly, resulting in a major change in the entire body structure. We can advance the air intake almost to the bottom of the nose. In a flat position, design a mandibular air inlet.”
Chang Haonan took a piece of paper and drew a simple diagram, and at the same time expressed his design ideas in as simple and popular a way as possible.
“This can ensure that the length of the air inlet is close to the original design. The part after the 1Г cross section of the body does not need to be modified, and we can also use the radome as part of the air intake mechanism for the overall design. The conical radome pre-compresses the gas to improve the overall air intake performance"
The reason why these words are wasted is naturally not due to Chang Haonan's attribute of being a teacher. Rather, according to the design method provided by the system, one first needs to manually determine the half-cone angle of a cone-shaped precursor, and then the corresponding inlet design can be calculated. optimal solution.
In other words, the inlet/cone front body combinations designed under different half-cone angles are quite different.
However, Chang Haonan does not know how many half-cone angle corresponding design solutions will work best after being installed on the J-7.
In the field of design, choosing initial values depends largely on experience, but Chang Haonan, as a military screwdriver before his rebirth, had no experience in mastering the overall design of a model...
So he needs to make several different plans, simulate their performance when combined with the J-7 body, and then explore the rules, and finally find the best performance option.
The workload of this process is very large, but a lot of the content is actually repetitive work with little innovation, so it can be completed by three other people, while Chang Haonan himself concentrates on the most critical part.
Firstly, this can improve efficiency, and secondly, it is in line with his vision of the future usage of the system, so it is considered a preview.
"The workload is indeed much smaller this way, and many parts can even be used in common with the original model."
Zhou Shuwan hammered his fist on the palm of his other hand and said " There was a crisp sound: "Haonan, let me tell you what to do next, we will all obey your command!"
Thanks to [Asked Jung] for the 1,000 starting coins
Thank you to [Tong Le Mei Po] for the 500 starting coins and 1 monthly pass
Thank you to [fhtvbn] for the 2 monthly passes
(End of this chapter)