Chapter 2077

The maximum takeoff weight of any aircraft is greater than the maximum landing weight, because if it takes off, it's ok as long as the power is enough. If it's not enough, the flight distance is longer, but the landing is different. If it wants to land, the landing gear has to bear the impact force, and the weight is too large. When it hits down, its legs will break.

Therefore, the landing is generally less than the take-off weight. Anyway, under normal circumstances, the aircraft needs to burn oil. If there is an accident, the take-off has to land. Either discharge oil in the air or fly a few more laps.

For the carrier based aircraft, the problem of landing is even greater. It has a great impact when landing. The bearing capacity of the deck is limited. There are blocking cables when landing, and the weight it can bear is also limited. Therefore, a series of restrictions have led to the landing of the carrier based aircraft, and the weight is an index to be considered.

On the contrary, this is an advantage of MIG 29. This cargo is originally a medium-sized aircraft. The weight when landing does not need to be considered. It must be within the acceptable range, but the current t-10k is different.

Why not use folding wings on the first plane? Because everyone has no bottom in mind, they think this thing has gained too much weight.

When it is changed into a carrier based aircraft, the weight of all aspects will increase, including the increase of wings, equipment, body structure and so on. The weight is rising!

The empty weight of the Su-27 modified carrier aircraft, later named Su-33, is a very interesting problem. According to the later data, the empty weight of this aircraft is 18500kg, and the empty weight without pylon is 18780kg. The latter statement is because the empty weight is dry. When lubricating oil is added, it will increase the weight of more than 200kg, Generally speaking, it's not big. However, if we extrapolate from the performance of Su 33, that is, when taking off weight, subtract the internal oil and ammunition, we can get another data. Its empty weight is 19750 kg, almost 20 tons!

This data is terrible, because the allowable weight of the Kuznetsov is only 22.4 tons. What does this mean? It doesn't matter when fighting, but during normal training, this kind of aircraft is almost empty and doesn't hang anything. If it hangs too much and comes back too heavy, you have to throw away the excess.

If you do this often, no one can stand it.

In fact, the male cat carrier aircraft also has this problem. It can carry six undead birds to take off, but when landing, it is only allowed to carry four, so it has to throw away two before landing. However, it is very good that people can hang four to land. In normal patrol, hanging two is enough, unless war breaks out and anti-ship missiles fly like arrows, They will luxuriously carry six immortal birds.

Now, what about this Su-27 modified carrier plane? You can't hang up anything at ordinary times!

This is its main problem.

The only advantage now is that with the help of Qin Guan, the weight of their radar has been reduced. The heavy inverted card antenna has been removed and replaced with a flat slot radar antenna. The weight has been reduced by more than 200 kg. However, these alone are not enough. Their empty weight is close to 20 tons, which is a major problem they face, How can the Navy be persuaded to use this aircraft instead of the MiG-29?

Simonov's problem was pierced by Qin Guan's words. Immediately he knew that Qin was always omnipotent. He must have a way.

"What do you think should be done?" Simonov asked.

"Where can we reduce the weight? If we can't, we can't go on drilling." Qin Guan said with a smile. Of course, this is a joke. Now, after saying this joke, he became serious: "first of all, your electronic equipment is backward. If this fighter completely purchases our avionics equipment, it can reduce the weight of 300 kilograms."

The subsequent processing circuit of the radar has not been replaced, and there are complex heat dissipation pipes. If the equipment of Han country is used, these can reduce the weight.

Completely replace our equipment. We are the supplier of equipment. Qin Guan is serious. Simonov is very embarrassed because he knows that there are many problems. After all, their aircraft is equipped with a pile of Han equipment. What's the matter.

When you asked me to provide advice, I naturally provided it. When J-11 was refitted into J-11 B, the empty weight was reduced by 600 kg, which was largely due to the reduction of avionics. Qin Guan thought in his heart.

"Then, a large number of composite materials are used. Laying composite materials in many parts can reduce the self weight by about 300kg to 500kg."

Now, the Han state has developed a series of composite materials, which can greatly reduce the weight of the aircraft.

In fact, in the 1960s, composite materials for aviation had been developed. Now, some parts of the skin of fighter planes have begun to lay such composite materials. Almost all the surfaces of aircraft such as F-117 are made of conforming materials. Even for fighter planes such as F-22, the conforming materials have reached more than 20%.

For Xiong Guo, this aspect is still blank. For them, they would rather use more titanium alloy than composite materials. After all, Xiong Guo has many resources, especially titanium alloy. They can even use titanium alloy to build the shell of the whole nuclear submarine. However, the research on composite materials is blank.

Now, if we use composite materials to build the outside of this aircraft, we can continue to reduce the weight. In this way, we have to rely on the help of the Han state, because they still have no technology.

Of course, xiongguo has a profound industrial heritage. If they want to study it, they can certainly study it, but they don't have time now!

The progress of the carrier based aircraft can not be delayed. It is conceivable that the aircraft carrier will be built soon. They not only need to practice on the nitka system, but also need to land the ship with real weapons. Even, whoever gets on the ship first will win the favor of the Navy.

"Finally, the flight control system. If the control of the flight control system is more precise, the redundancy can be reduced. It can land with heavier self weight without danger," Qin Guan continued.

The maximum landing quality is limited in many aspects. If the control system is more advanced and the impact force can be reduced, it will naturally increase the weight. In short, these need the cooperation of the Han state. As for whether you use it in the end, it is your business. Qin Guan has introduced this scheme.

We are selfless help.