Chapter 765: Moe Meng Da Mo Revised Edition

Thinking of the depths, Song Wenhua did exactly the same thing as Tan Zhenhua and Ben Fang-he pulled a few napkins, took out a pen and began to write and draw.
Zhan Nuozhu curled his mouth and muttered, "What's going on today? Each one is better than napkins."
However, he was greeted by two angry eyes, Tan Zhenhua and Ben yelled in unison, "Shut up!"
Chief Zhan suddenly shrank his neck in fright. Tan Zhenhua is naturally not afraid, but for Ben Fang, he still has three points of awe from deep in his heart, and he also knows that it is best not to interrupt Song Wenhua at this time. The way of thinking, otherwise, there is his good fruit to eat.
Song Wenhua, that's a good friend of his general's father.
It took nearly as long as Ben Fang before Song Wenhua's calculations finally came to an end. He raised his head and let out a long sigh of relief: "It should work."
"Old Song, how's that? Any ideas?"
"Teacher Song, can you change it?"
Ben Fang and Tan Zhenhua asked the same question almost at the same time.
Song Wenhua nodded, pushed the last napkin in his hand in front of the two of them, and said, "Old Ben, Zhenhua, come and take a look."
He didn't greet Zhan Nuozhu, because he thought this was an ignorant master, and in his eyes it was not much different from an illiterate...
However, Zhan Nuozhu had a thick-skinned face. Song Wenhua didn't greet him. He didn't consciously follow him and got together. Several heads were squeezed together to look at Song Wenhua's design together.
On the napkin, I drew a sketch of an airplane. However, the shape of this airplane is rather unique. Say it is a "J-7", but the iconic nose inlet is gone, replaced by a conical shape. The big head, the airspeed tube on the side of the nose has also moved to the front, like a spear pierced into the sky, and when you look closely, the air intake has moved to the lower jaw. At first glance, it looks like a mouth is pouting. The face is pouting with a smile, making it impossible to associate it with the "J-7"; but you have to say that it is not a "J-7", its slender figure and the aerodynamics of the mid-single triangle wing and swept tail The layout also illustrates the inevitable blood relationship between it and the "Jiqi".
Well, this aircraft is a modified version of the "J-7", and it has been modified to look cute.
Tan Zhenhua felt familiar when he looked at the aircraft in this sketch, and when he thought about it, he immediately overlapped it with a certain picture in his memory-isn't this the legendary "J7 FS"?
As a non-professional military fan in a previous life, I am familiar with the "J-7 FS" that has been circulated in major military forums, because this experimental aircraft with the fuselage number "139" is really all "J-7". Even the "MiG 21" is a different kind of modification and upgrade program.
It completely broke through the limitations of the original design of the "J-7" aircraft, changed the nose air intake to the lower jaw air intake, and explored a low-cost but can give the entire "J-7" and "Mig 21" family super The road to line-of-sight combat capability without the cost of performance degradation.
The only regret is that it appeared too late. In Tan Zhenhua’s previous life, this test aircraft did not fly into the blue sky until June 8, 1998. At that time, most of the "F-7" and "Mi The "Ge-21" fleet has also reached the end of its lifespan, and if it costs too much to modify it, it is not economically cost-effective, and this is also in Tan Zhenhua’s view that this type of modification program has finally failed to obtain on the market. The main reason for success.
And its design sketch now appeared in front of him, which can only show that this plan has actually been brewing in Song Wenhua's heart, and it was born ahead of schedule due to various coincidences.
This is a good thing.
If this plan is validated and feasible, and nothing else, China’s current large number of "J-7" fleets will be able to obtain all-weather, beyond-the-horizon combat capabilities. For a country’s air force, It is undoubtedly a huge increase in combat power!
Zhan Nuozhu is a pilot. Although he has never flew the "J7", he still knows the plane. He looked around for a long time before asking in confusion, "Lao Song, you are the "J7"? Why don't you look at it?"
Song Wenhua gave him an angry look before saying: "Of course it is the "Jiqi", but I just thought of an improvement plan."
He pointed to this sketch and began to explain: "The airborne radar of the original "J-7" series fighters can only be installed in the shock cone of the air inlet with a narrow diameter. The size of the radar scanning antenna is strictly limited by the volume of the shock cone. , Because the shock cone is too large, the air intake will be reduced, which cannot meet the normal working requirements of the engine, so it can only be equipped with a low-power ranging radar, even if it is replaced by the small PD radar that Lao Ben promised me, 40 kilometers The detection range is also at the top of the sky, and it is very likely that it will not be reached. This has a great restriction on the combat performance of the fighter. But I changed this way, giving the nose radar a lot of space. According to my calculations, the nose The antenna size allowed for this radar cabin can be enlarged to 600 mm."
Ben Fang immediately said: "If you can reach 600mm, the performance of the radar can be at least doubled, and the castration function is not needed, but you still have to have enough electricity to give me."
Song Wenhua said: "I'll talk about electricity later, let's continue talking about this machine head."
He paused, and slid his fingers to the pouting mouth: "I moved the air intake here. It seems a bit uncoordinated, but there is one biggest advantage. This design allows the machine to retain the original Most of the structure of the front fuselage, even the nose landing gear, can be modified without modification or only minor modifications. As long as the lower half of the front fuselage is modified, the modification cost is very small."
Tan Zhenhua asked: "Then Teacher Song, will this change affect the flight performance of the aircraft?"
Song Wenhua replied: "There will definitely be a little impact, but I just calculated it, it should not be big, but just a rough calculation, the specific situation needs to be made after returning to the country to make a model to blow a hole."
Tan Zhenhua nodded, and Song Wenhua continued: "Since the aircraft can be equipped with a large radar, the semi-actively guided air-to-air missile can also be adapted. This brings another problem. We need more pylons. ."
Having said this, he sighed: "This aircraft is too small and has a limited fuel load factor. So when performing missions, two auxiliary fuel tanks are usually taken into the air, but in this way, the original 4 pylons Not enough, because two short-range air-to-air ammunition must occupy two pylons, plus two auxiliary fuel tanks, I have no place to hang semi-active mid-range air-to-air ammunition instead of this missile. This aircraft still cannot be said to be equipped. Beyond visual range combat capability."
Zhan Nuozhu asked in a daze, "Is it so difficult to add a rack?"
Song Wenhua snapped at him angrily: "Speaking of adults, don't interrupt the children."
Zhan Nuozhu: "..."
In other words, based on the friendship between Song Wenhua and General Zhan, he can say that, but the problem is that Chief Zhan is in his 30s this year...
Tan Zhenhua smiled and said, "Teacher Song, I think the strength of the underside of the wing should be considered. It might be a bit troublesome to increase it, but can it be added under the belly of the aircraft?"
"I think so too." Song Wenhua said: "But this way, the weight of the mount will increase, and it will inevitably require the aircraft to provide greater lift. In other words, the wings may need to be redesigned, and the thrust of the engine is also Will require an increase, otherwise, the flight performance may drop drastically."
"Moreover," he continued: "The result of this is that the aircraft will definitely become heavier. If you want to maintain its original maneuverability and flexibility, it is bound to relax its static instability, which brings a series of problems- —We may have to add a fly-by-wire control system for it, otherwise, the pilots will have too much effort to fly the plane."
"So, this is a very big improvement plan." Although Ben Fang is not engaged in aviation, he has been mingling with aviation people recently, and he is also studying airborne radar, so he can understand what Song Wenhua said. , And immediately derived a conclusion from his own experience.
Song Wenhua said: "Yes, it can be changed, but there is a lot of movement, no less than a brand new model."
Tan Zhenhua thought for a while and said, "Teacher Song, I have a suggestion."
"Well, you said."
"I think we can divide this matter into two parts and walk on two legs, so that things will be much simpler and clearer."
"Oh? Tell me about it."
"First of all, we can divide our target customers into two categories, which are: the upgrade of old users and the development of new users, and then we can adopt different solutions for these two different situations."