Chapter 1451: New plan (4)

At Lu Hesheng’s current age, it is obviously impossible for him to undertake specific design work, but his important role is that most of the successful works designed in his life are shipboard models, and he needs to do the aircraft on board. What homework can be said to be easy to come by.
How to modify the landing gear and what kind of performance can it meet to withstand the pulling force during ejection and the impact force during landing; what is the lift coefficient of the aircraft to meet the requirements of take-off/landing on the ship; the folding mechanism on the wing How does it work, how to design it, what material is used to make it work, and what are the design elements of the tail hook used to hold the blocking cable... If there is no experience and no reference, these problems rely only on the designer's imagination Use experiments to prove that it will inevitably take as much time and money as going to the sea.
In Tan Zhenhua’s previous life, after entering the 21st century, China used its
Su 33
prototype T-10K-3 obtained from Wu Kelan to solve these core technical problems with its strong reverse engineering capabilities. But to be honest, Tan Zhenhua himself is quite cold to the China Development Model "J-15" of the "Flanker" family T-10K-3 of Sukhoi blood.
This fighter was too big and was the largest of all carrier-borne fighters in the world. Unfortunately, the aircraft carrier of China at that time was a medium-sized ski jumper. The match between the two was actually problematic. The military fans on the forum also stand in two camps with a clear love and hatred for this type of fighter. They have fought countless verbal battles with each other, and even want to have a real PK, but a mismatch is a mismatch. Tan Zhenhua believes that it cannot be because of this type. The fighter plane was designed and manufactured by China, so we can't point out its shortcomings. It is the correct attitude to be enterprising without exaggerating and knowing the shortcomings.
We can use a set of data to illustrate some problems. Take the exotic twin brother "Su 33" of "J-15" as an example. The same is true for aircraft carriers.
The Su 33 has an empty weight of 18.4 tons, a maximum fuel load of 9 tons, a maximum bomb load of 6.5 tons, a maximum take-off weight of 32 tons, and a maximum combat radius of more than 1,500 kilometers-but these beautiful figures are just paper data, not at all. Have practical meaning.
Take Su-33’s mothership "Kuznetsov" as an example. There are 3 take-off points on it, of which No. 1 and 2 are short take-off points. The runway length is 105 meters. When taking off from this runway, the Su-33’s The take-off weight must be limited to 24 tons, and the empty weight of the fighter itself has reached 18.4 tons. Don’t even think about the heavier anti-ship weapons. They can only carry 2 out of 2 or nearly 4 air-to-air missiles. For the mission, only half of the fuel can be added at most. In addition, the ski-jump takeoff itself consumes a lot of fuel. Then the time that this fighter can truly stay in the air is very limited, and its combat radius is probably difficult to exceed. 500 kilometers; even at the expense of dispatch rate from the No. 3 take-off point to take off at a length of 195 meters, the maximum take-off weight is also limited to 30 tons, that is to say, either less fuel or less ammunition-in this case, What's the point of having such a large body?
So classmates, you see, even Rakshasa Maozi, who was so poor that he was so poor, finally gave up the Su 33. I would rather ground all the 24 fighters produced, or replace them with the smaller MiG 29K. Can explain the problem.
Moreover, it is actually difficult to develop from the imitation, especially when it is necessary to change the original design, because no matter how powerful reverse engineering ability is, it is impossible to fully understand the original designer’s design ideas and methods. For such a complicated fighter aircraft system, it often affects the whole body by a single start. Nothing can be changed arbitrarily. An example was given in the previous article. Taking China’s airborne PD radar knowledge at this time, Measured by the overall level, Maozi’s street has completely exploded, but you still have to pinch your nose to accept the 1 ton N001 radar on the Su-27. Even if you replace it with a domestic product that is more than half lighter, it still has to be in the nose Add a counterweight inside.
Isn’t there a famous saying that
change the original design with care
? This is true from the original intent. The reason is that this "original design" was not designed by myself. I know it but I don't know why. This is in Tan Zhenhua's past life, insisting on imitation, and having 8 academicians. "Shen Hoi" began tossing flankers in the early 1990s. The result of 30 years is to use China's modern avionics radar equipment to create a Chinese version of Su-30MKK-F-16; and insist on the original " "Chengluoma" is an important reason why the "J-20" can be developed after the "J-10".
This is where Tan Zhenhua is determined to continue to invest in the continuous development of new models on the basis of the "Flying Leopard" fighter. This fighter is the original version of the 3603. It knows both its aerodynamic shape and internal structure. The third plan, which is slightly more radical, laid a good aerodynamic and structural foundation for this type of fighter. Now it is much easier to make modifications on this fighter than to build a new type of aircraft from scratch.
He also has Lu Hesheng, a "super plug-in" in the field of carrier-based aircraft. If he doesn't maximize the role of the old man, wouldn't it be a waste of the time he spent his brains and destroy Grumman?
It should be noted that the treatment of the three models of "one machine and three models" in the "JH-7B" project is still different. Among them, "JH-7B" and "JH-7BS" are officially approved by the state. Model issues include funding from the state and investment from the air and navy forces. Tan Zhenhua, as one of the investment participants, will refer to the previous plan for his results. He has the right to sell export products; and the final "JH-7BH" Without the participation of China National and the military, it can be regarded as a cooperative project of 3603, Xifei Plant and "Xiangjiang Defense Group". It is a complete export model. At least so far, there is no sign of China's own equipment-China There is no aircraft carrier. What do you want the carrier-based aircraft to do? Right?
At that time, Chen Yijian agreed to carry out research on this subject. It was also out of the starting point to do more exploration and accumulate some technologies. He also wanted to squeeze more dry goods from Lu Hesheng during the pre-research of the subject, so as to leave more for the unit. Useful technical reserves, but today I saw Tan Zhenhua's sketches again, and he really couldn't sit still.
He pointed to Tan Zhenhua's unfolded sketch and asked: "Zhenhua, are you really determined to get out of such a plane?"
Tan Zhenhua nodded and said: "Yes, Master Chen, I have already decided that no matter how much money I spend, I will get this plane out."
Lu Hesheng stared at Tan Zhenhua for a while, shook his head slightly, and sighed softly in his heart, bemoaning how his precious granddaughter found such a restless kid, which made my old man more than 70 have to follow along. Asked: "Zhenhua, do you know how many problems need to be solved to modify this aircraft? If nothing else, where did you get the engine?"