Chapter 1971: Engine progress

This is the situation now. It took a long time for domestic surveying and mapping to imitate the F110 engine, and a large number of engine companies have thoroughly understood this engine. Therefore, it is natural to make improvements on this engine. Up. This engine is digitally improved, and digital circuits are used to control the engine. Various temperature sensors, airflow sensors, etc. on the engine are also digitally transformed. Of course, these are all made by the engine factory. The data of their interface is fine.
Now, looking at the nozzle at the rear, Qin Guan was even more surprised that the vector nozzle came out. You must know that the power system of the fourth generation machine must have a vector nozzle.
"This set of nozzles has a lifespan of only three hours." It seemed that he knew what Qin Guan was thinking, and Mr. Lu explained.
Vector means the direction. The vector nozzle is the nozzle whose direction can be changed. When the thrust direction of the engine can be changed, it can achieve many super-maneuvering actions. At the same time, the realization form of the vector nozzle is also different.
For example, the F-22 fighter uses the simplest form of baffle, which can deflect up and down to achieve a two-dimensional vector change capability.
And now, the entire vector nozzle in front of us is an axisymmetric vector nozzle. It is based on an ordinary convergent-diffusion nozzle with an internal modification of the action cylinder to control the small twisting of these scattered pieces. Changing the direction of the nozzle will change the airflow inside.
The technology is very difficult. At the same time, the requirements for materials and processing are very high. Back then, the bear country exported to the white elephant country only had a lifespan of 15 hours, but what about your own? It was only three hours.
Although the time is short, it is also a zero breakthrough. It is three hours now, and it can be thirty or three hundred hours later! Even with a life span of three hundred hours, that is enough.
"The compilation of flight control software is a difficult problem," Qin Guan said.
The most difficult part of developing fighter aircraft now is to write software. In the past, this was not necessary at all. In order to develop this fighter aircraft, they added more than ten times the code on the basis of the original digital telex software. Quantity, this system is carried out simultaneously with the design of the stealth shape, and more research and development forces are invested at the same time.
In addition to themselves, the help of a large number of comrades from the Flight Test Institute finally achieved the technological breakthrough of this aircraft.
"Did you not increase the power system?" Qin Guan continued to ask.
After a series of improvements, the overall wind resistance has actually increased. Therefore, if the thrust is not increased, the performance of the aircraft will decrease, such as the maximum speed, etc. Of course, the flight control is updated and the vector engine is updated. Joining will make it more mobile, there is no doubt about it.
"The original engine is still being used. However, the engine factory is planning to increase the thrust. The latest modification of this turbofan 10 is expected to output 142 kN thrust, with an intermediate thrust of 90 kN. At that time, it should be able to achieve a supersonic cruise capability with a Mach number of about 1.1." Lu Lao continued.
Before the new generation of high-thrust engines were successfully developed, they could only use the existing engines for improvement. In fact, the F110 engine was originally good. In the history of parallel time and space, by the end of the 90s, GE had On the basis of F110-GE-129IPE, the low-risk derivative approach was followed and the F110-GE-129EFE engine was developed.
This engine uses a three-stage integrated blisk fan, the first stage fan is a wide-chord blade, a light-weight composite wire-wrapped fan casing, etc., which increases the engine thrust to 151 kN, an increase of 17.2 %.
Later, for the life of the engine, the thrust was stabilized at 142 kN, called F110-GE-132. At the same time, the improvement plan of Tomcat also matched this engine. By replacing this engine, it was realized. Up to 1.3 Mach supersonic cruise.
Ordinary fighter jets can enter supersonic speed, but they need to start afterburner. After the afterburner is turned on, the fuel will be consumed at an alarming rate. In this case, even if the fighter's engine can withstand it, it will be used within a few minutes. All the fuel is burned out.
Therefore, when cruising, you must never drive at supersonic speed.
However, when the power of the engine is sufficient, such as the thrust without afterburner, the afterburner level of the previous engine is reached. In this case, supersonic cruise can be carried out.
The F-22 relies on two engines with a thrust-to-weight ratio of 10 to achieve supersonic cruise. With a Mach number of 1.5, it can fly at supersonic speeds for more than 30 minutes, and the power system is absolutely sky-defying.
The Tomcat fighter does not have such a powerful thrust, but it has the advantage of variable swept wings. When the wings are swept back, the drag will be greatly reduced, which is beneficial for supersonic cruising.
If it were not for increased resistance due to a series of improvements, it could achieve a supersonic cruise of Mach 1.3, but even now, the supersonic cruise of Mach 1.1 will be a great improvement.
Compared with the straight line, Song Lao and their duck-type layout project, there is no such possibility, because their fighter resistance is certain. Now, speaking of this performance, Lu Lao is proud of this. Once their fighter has this ability, the battle will be easier. They can reach the battle zone at supersonic speed, which means that the time spent in the middle is shorter. The fighter plane of the United States will certainly be favored by the Air Force and the Navy and become the next generation fighter plane.
Regarding the selection of the fourth-generation aircraft, the superiors have not yet determined. The current 320 plant is completely self-funded. If it were not for the support of a large number of arms sales, they would not be able to make it. Developed on the basis of the eleven, it is equivalent to a stealth change. The progress is so fast, and it will definitely win.
Qin nodded his head. The engine has always been his own weakness. This reflects the background of a big country. Those who can’t be anxious. Now use the existing ones and continue to upgrade and improve until the latest engines appear. most suitable.
"Come, take a look at our cockpit." Chen Rui pulled Qin Guan and climbed up the gangway. For the pilot, the cockpit is the most important part, and Chen Rui is quite satisfied with this cockpit.
Now, when Qin Guan went up and looked at it, he suddenly sighed: "This is too advanced, right?"
What did Qin watch?