The wandering of the heavens starts from the fake silly pillar

Chapter 274 Reply
The old leader was looking at documents in the office when the secretary walked in.

"Commander Li Youhong from the leading military region called and said he had something important to report."

The old chief put down the documents in his hand, wondering in his heart that Xiao Yao and the others should have just arrived at the military research institute for two days, and it is impossible to have such a fast research speed.

"Turn the call over."

The old leader responded
"Professor Xiao Yao, the chief, proposed to develop a new type of engine. He said that the fighter jet engine we purchased with Yingjiang is an engine before World War II, and it may not be able to meet your expectations now."

After the call was connected, Mr. Li stated Xiao Yao's suggestion in a simple and clear manner. The old leader had to personally issue orders to develop a new engine, and he could not make the decision.

"Give the phone to Xiao Yao and I'll tell him."

The old leader wanted to hear Xiao Yao's advice, and he had questions to ask him.

"Hi, leader, I'm Xiao Yao."

Xiao Yao is next to Master Li.

"Xiao Yao, I want to know if there are other uses for this engine. Could it be that the batch of planes we exchanged can't be used?"

The old leader was puzzled. When the plane was just handed over to the military, the first plane had an accident during the flight. The other planes were checked by professionals and found to be engine problems. Although it did not affect the flight mission, the old man The leader wants to perfect the fighter so that he can take off with confidence and complete the mission.

"Leading these aircraft engines also have uses. For example, they can be used on transport aircraft after improvement, but the kinetic energy is not enough as a fighter engine. If it is used for transport aircraft and civilian aircraft, this engine is very durable and advanced. But as a fighter Its kinetic energy is not enough to see, in the air speed is everything."

Xiao Yao put forward his own opinion, not to say that this engine is useless, in another 50 years this engine will still appear on transport aircraft, after all, it is fuel-efficient and has sufficient flight speed.

"Okay, okay, you should be more professional in analysis. As a layman, I can understand it. Now I have two requirements. First, you should find ways to improve this engine while developing a new engine. We are relatively backward in the field of air transportation. Since If you have existing technology, of course you should use it, and second, develop a new engine as soon as possible, and I’ll be waiting to celebrate your success, you can call Comrade Li Youhong.”

The old leader said happily
Mr. Li answered the phone

"Comrade Xiao Hong's military region's materials are given priority to satisfy Xiao Yao's team. The design of the fighter plane will be postponed first, and everything will be discussed after the engine is successfully developed."

Master Li nodded, stood at attention and hung up the phone.

Xiao Yao returned to the research room after receiving a clear answer.

"Now we have received a clear answer that allows us to develop new engines. After studying these engine materials, I came up with an ideal engine. For the time being, we call it a turboramjet engine. The concept of this engine is a combination of turbine and ramjet engines. The propulsion device, the two engines share the intake port and exhaust pipe.

Combining the turbine core and the ramjet in different ways results in different top operating Machs for the corresponding combined engines.

As the flight speed increases, the efficiency of the compressor and turbine drops sharply. At this time, the compressor is in a feathered or windmill state, while the ram combustion chamber can continue to work alone, and the maximum flight Mach number can be extended to 4200 kilometers per hour. Due to the limitations of the material properties of the turbine and compressor blades, the core of the turbine needs to be closed so that the airflow enters the ram combustion chamber through a bypass. "

Xiao Yao drew the picture while explaining. Now the sketch of this engine is presented in front of everyone. At present, he only put forward the theory and direction. Now it is necessary to divide the work and develop the important components.

The task assigned by Lin Siyue is to increase the intercooling and heat recovery process on the basis of the thermal cycle of the turbofan engine. The regenerator is a main characteristic component of the intercooling and heat recovery turbofan engine. The fighter will generate a high temperature exceeding 900K when it is working. In the core flow, its performance will directly affect the performance of the engine, and the intercooling and heat recovery turbofan is a key technology.

Xu Wenxin and Wu Rui are responsible for improving some previous precision machine tests. Every step of the engine is made with high precision, and any error in it will affect the use of the entire engine.

As soon as the task was assigned, Suman went to the laboratory and asked everyone to eat first. Everyone was still hungry from yesterday.

Everyone is looking at all kinds of assigned task materials in their hands, and they are reading them while eating, and they must memorize these data and principles in the shortest time.

Wang Yutong calculated the corresponding data in the first time and nodded. As long as everyone works hard in this area, it can be realized. The 4200 kilometers per hour engine proposed by Xiao Yao.

Lin Siyue found out how to make the most reasonable Qualcomm axial flow compressor in the shortest time, usually called a fan, because it is similar in form and function.

At high free-flow Mach numbers, say greater than 4, the pressure ratio of the fan is no longer needed for thermal efficiency, but its viability is threatened by the high stagnation temperature of the trapped air.So if this engine is to be used at even higher Mach numbers, provision must be made to remove or retract the fan from the main flow.

A turbine driven by the high-temperature and high-pressure gas produced by a separate combustion chamber. The turbine provides the power required by the fan and its intake conditions have the advantage of being independent of the flight state.

Here the turbine airflow is called the original airflow, and the fan and turbine require the front of the engine to be axisymmetric rather than two-dimensional, which will complicate the integration of the aircraft.

The mixer agitates the air stream with the original air stream, which will increase the overall temperature of the air stream while sending unreacted fuel to the entire air stream for combustion,

The raw airflow can be intentionally fuel-rich to provide hot gaseous fuel for combustion with air.

And it can be kept at a safe temperature.

One month passed, only Lin Siyue made the fastest progress, and after the research was completed, the physical experiment began.

Install this new fan and turbine on the old engine and turn it on to the maximum horsepower to check whether it meets the safe temperature of the new engine.

These two things must be only one-third of the expected temperature on the old-fashioned engine to qualify, after all, the kinetic energy of the old-fashioned engine is less than one-third.

When the fuel burned out, the temperature did not reach one-fifth of the expected temperature. Lin Siyue clenched his fists and made a victory gesture.

Her mission has been completed, and the rest depends on the progress of Xiao Yao and the others.

Lin Siyue's research was successful, and the others were not a few days behind. The new engine was secretly assembled.

Xiao Yao and the others nervously transported it to the laboratory for final testing.

(End of this chapter)