Back in 1978, I was admitted to Northwestern Polytechnical University.

Chapter 142 British, send over your RB211 data!
The fan blades are too weak to pass the bird strike test! If they fail the test, they cannot be installed on commercial airliners, and this costly replacement technology will fail!
"Damn it! What happened? We tested the Spey engine blades last time, and they could definitely withstand it!" Schroeder said as he rushed onto the test bench, his eyes filled with despair as he looked at the fan blades that had broken completely in two.

Generally, a bird strike test involves damage to the surface of the fan blades. The extent of the damage, stress response, and performance need to be assessed to determine whether the test meets the standards.

Now, it just breaks right off, which is definitely unacceptable!

Stanley looked grim. Everything else remained the same, except for changing the fan blades, which could further improve the thrust and thrust-to-weight ratio of their RB211 engine. He valued this project highly; otherwise, he wouldn't have stayed to test it.

Unexpectedly... he's utterly unreliable!
He took a deep breath: "If Spey's is fine, then we need to analyze the cause of the RB211 blade breakage. Is it because the blade is too long, causing the carbon fiber material to be unable to withstand the load, or is it because of a problem with the weaving process..."

Schroeder nodded: "Our weaving technique is modeled after the Spey blades, so... there shouldn't be any problems!"

"The shape has been enlarged, and the previous woven structure may no longer be able to support such a large blade, so a redesign may be necessary..."

Schroeder sighed, "We... I'm afraid we don't have that capability!"

A simple enlargement is fine, but a complete redesign? We'll have to find someone from East Asia!
"Since we can't solve this ourselves, let's book the earliest tickets and go together to find the Easterners!"

Schroeder's eyes widened: "You're going too?"

"Yes, I want to visit Northwestern Polytechnical University. It's an amazing university."

Dongfang, Northwestern Polytechnical University, Department of Electronic Engineering.

"Don't worry, Qin Liang, this guidance head isn't difficult for us. We can replicate it." Zhu Qiu led a group of students, disassembled the guidance head, studied it for a while, and then puffed out his chest.

"Some of the chips need to be purchased from outside, but this is only temporary. Once the 8086 chip is diced, we will also diced and manufacture these chips, which will save us foreign exchange. You will still need to help solve the chip problem in the early stages."

"Okay." Qin Liang nodded. "We need to thoroughly understand the technology. We don't necessarily have to use the original model. We can find some alternatives to avoid trouble..."

Before he could finish speaking, someone rushed over: "Qin Liang, Qin Liang, people from Luo Luo Company have arrived at the conference room in the Fifth Department office building. The department head asked me to call you back!"

Rolls-Royce?

Qin Liang's face lit up with joy. Sure enough, another fat sheep had come knocking!
In the conference room.

"Mr. Stanley, the export version of the Super-7 fighter jet, which was developed with the assistance of Northwestern Polytechnical University, uses the RB199 engine. Rolls-Royce also has a stake in this engine, not to mention the original Spey project. Both of us are involved in aviation technology, and we hope to cooperate more in the future..."

"Director Luo, we've come here today to further deepen our cooperation..."

Just then, Qin Liang rushed in. "Everyone, welcome to Northwestern Polytechnical University! Oh, and who's this?"

“Mr. Qin, this is Mr. Stanley, the chief engineer of the RB211 engine development at Rolls-Royce,” Schroeder introduced. “We are here today for the carbon fiber fan blade project.”

"Well, this project is one of the outstanding achievements of Northwestern Polytechnical University recently. By using carbon fiber materials, the weight of the fan blades has been reduced, and by using a newly designed fan shape, the thrust of the fan has been increased. You should be using our project in the RB211 engine, right?"

"That's right, but... we encountered a problem during the development process. The strength is not enough to pass the bird strike test."

"Not strong enough? That's impossible... Wait, how did you design it? Did you just enlarge our fan blades?"

Schroeder blushed: "We didn't just scale it up proportionally, we made improvements..."

"These carbon fiber blades need to be completely redesigned according to the engine's requirements. Mr. Schroeder, didn't I say last time that as long as you give me a token fee of ten million pounds, I will design entirely new blades for you? Why won't you listen..."

Stanley's expression was complicated: "Okay, then we'll entrust you with the design of this blade, but... the contract must stipulate a timeframe, a maximum of three months, for us to complete the design. If the project is delayed or the performance does not meet the standards, you need to give us three times the compensation!"

Ten million pounds is nothing to him as the chief architect; he has the authority to do so.

"No problem, we can even make a sample of the fan blades for you within three months! Send me all the data on the RB211 engine as soon as possible..."

Stanley's expression changed instantly: "You want our RB211 data?"

“Yes, the design of the fan blades is closely related to the engine. If you don’t give me the data, how can I design it according to the engine’s requirements? What if it doesn’t match? Of course, it’s fine if you don’t give it to me, but when we sign the contract, we can add a disclaimer clause so that if surge occurs, it has nothing to do with me.”

The RB211 is Rolls-Royce's signature product! It pioneered the three-rotor technology globally, and the development process was arduous, with serious cost overruns that almost bankrupted Rolls-Royce!

Now, the Easterners want the technical data for the Ruida engine? Of course not!
However, if we don't provide it, the fan blades might not be compatible!
Looking at the hesitant Englishman, Qin Liang continued, "The three-rotor RB211 engine has enormous potential. Its fan blades rotate at lower speeds and the blade tips are less prone to stalling. Therefore, the size of the blades can be increased. I think it's no problem to increase the diameter to three meters. In this way, the engine's thrust can be increased to four hundred kilonewtons."

The current RB211 engine has a thrust of just over 200 kN and a fan diameter of just over 2 meters. The bypass ratio is around 5. Later, Rolls-Royce improved the RB211 engine and created the Trent engine, which further increased the bypass ratio, the fan diameter exceeded 3 meters, and the thrust was increased to 410 kN.
Increased thrust while maintaining the same fuel consumption – what company wouldn't want that?
Stanley jumped to his feet: "What did you say? A single engine, 400 kilonewtons of thrust?"

“That’s right. Since we can increase the thrust of the Spey to ten tons, the thrust of the RB211 to thirty or forty tons! What do you say, Mr. Schroeder?”

Schroeder nodded repeatedly: "That's right, that's right!"

　PS: The illustrations are actual photos and schematics of the RB211 engine. Please subscribe! Please subscribe! Please subscribe!
　　
　
(End of this chapter)