Chapter 913 (1/2)

Baozixuan is very familiar with the basic data of f404-ge-400 engine. The basic engine parameters were configured in less than one minute.

At this time, old William said with a smile: ”my younger brother is really powerful. He is more familiar with this engine than I am.”

He knew what old William thought, so he didn't care much. Look at old William's expression. The old boy is very uncomfortable. It will prevent the black cloud group in the future cooperation process, and will inevitably carry out internal self-examination.

GM f404-ge-400 is a very high-quality engine, but it is only for the third generation. After installing the fourth generation machine, the power output is obviously insufficient.

Baozixuan operated several times, a runway appeared on the screen, and the newly designed plane had stopped on it. It is very similar to the video games of later generations, but people now feel very novel when they have seen this.

At this time, the Dickinson sisters are staring at the screen. Today, the computer has brought them too much shock. No wonder black cloud products can sell well all over the world, and the performance is too powerful. I feel like watching science fiction movies. Even some science fiction movies dare not do so.

With an enter key, the plane starts taxiing and then takes off.

At this time, old William didn't know what to say. The gap between McDonnell Douglas and black cloud was at least five years. If you don't catch up, you may not even have cooperation opportunities in the future.

The insufficient thrust of f404-ge-400 engine begins to manifest. Supersonic speed can be achieved only when afterburner is turned on. Supersonic cruise that can't meet the design requirements at all. You know, the aircraft can't maintain afterburner for a long time.

At this time, fighters can only cruise at subsonic speed, that is, at the highest efficiency. To supersonic, additional fuel must be injected at the outlet of the engine. Increasing the thrust is called afterburner, and the combustion chamber with additional fuel injection is called afterburner. Opening the afterburner can enable the aircraft to obtain great kinetic energy in a short time and improve the speed and maneuverability of the aircraft; However, if the afterburner is turned on, it consumes a lot of fuel. Even a modern fighter, if the afterburner is fully turned on, its fuel can only last for a few minutes. Therefore, only within a few minutes of air combat will the pilot turn on the afterburner.

Seeing the soaring values on the screen, baozixuan smiled and said: ”there are still many problems with the thrust of f404-ge-400 engine. At present, supersonic cruise cannot be realized. But the overall performance is good. It seems that we need a stronger engine. ”

Hearing that he was dissatisfied with the engine of McDonnell Douglas's fist products, old William didn't know what to say. I want to see what tricks this boy can play. I've gained a lot of knowledge today.

Bao Zixuan: ”we need a double rotor afterburner turbofan engine with a thrust to weight ratio of 9:1, that is, the thrust must reach at least 100 kn. After the rear combustion chamber is opened, the thrust must reach at least 160 kn. Moreover, the binary thrust vectoring nozzle must be adopted, so that the engine should be able to meet the design requirements. ”

Old William was bewildered by baozixuan. Is there such an advanced engine on the market! But you can't look at the boy with ordinary eyes. He can always do some unexpected feats.

Future military fans must know that baozixuan said the engine; That is the Pratt & Whitney f-119 engine on the famous F-22 Raptor.

Pratt Whitney F119 is an afterburner turbofan engine developed by Pratt Whitney for Lockheed Martin F-22 Raptor. This 35000 pound (160 KN) engine is designed for supersonic flight (supersonic cruise) without afterburner. Compared with the ordinary fourth generation military aircraft engine, F119 can output 22% more thrust [1] when the number of parts is 40%, and can carry out continuous supersonic cruise at Mach 1.72. The F119 engine nozzle also uses thrust vector technology. The nozzle can deflect ± 20 ° in the longitudinal direction, bringing better mobility to the F-22.

RORO, Pratt & Whitney and general motors are the three major aviation engine giants in the world. Whether Boeing, Airbus, Dassault, Lockheed Martin and other military aircraft giants, the engines are basically provided by these three companies.

Baozixuan is very familiar with Pratt Whitney and general motors, not to mention such an advanced engine. You know, this is the world's first engine installed on the fourth generation fighter, which is revolutionary.

It was another operation. The plane taxied and took off at one go.

After replacing the engine, the performance of the aircraft is not improved at all, at least it can meet the requirements of supersonic cruise. Of course, all this exists in theory and can only stay on the computer.

The increase of engine thrust has brought qualitative changes to the aircraft. At least old William is very satisfied.

After flying around, baozixuan said with a smile: ”we can basically meet the requirements. We can also change to a more advanced engine to see the results.”