The military-industrial scientific research system of the academic master.

Chapter 1443: Face-to-face output
On the surface, Chang Haonan's words seemed like a sign of weakness, but in fact they were a move of retreat in order to advance. He obviously knew that Luo Luo could not afford to delay any longer, so he wanted to take all the initiative and let the other party show their cards first.

Even though Elginbridge was a professional manager, he was speechless when faced with this scene. He could only feel the blood vessels in his forehead beating violently.

In fact, in such a battle of wits and courage, with the brains working at high speed, both sides are bound to have some fever.

But perhaps because he was a white man, Elginbridge's old face quickly turned red, and soon the scene became impossible for others to ignore.

Even Chang Haonan couldn't help feeling a little worried.

After all, his plan did not include directly angering the head of the other delegation to death.

So I quickly eased the topic a little:
"In fact, if we really talk about reliability risks, the gear drive technology used by MTU and Pratt & Whitney has greater risks..."

But Elginbridge was still immersed in the emotions just now, and secondly, he did not understand the technology very well and lacked sensitivity to key terms, so he failed to respond quickly.

It even made the atmosphere a bit dull.

Fortunately, Tim Bodi, who was not far away, was a complete expert and had been paying attention to the situation here. He quickly interrupted Chang Haonan's words:
"You mean... there's something wrong with their test performance?"

Compared to the AE1500, which was built from scratch and has not yet completed aerial platform testing, Pratt & Whitney's PW1000 series has the PW318G previously prepared for the A1000 as a foundation, so it is now conducting twin-engine test flights on Bombardier's C Series.

Because it involves the safety issues of specific operating models, more data is made public than in previous factory tests.

Although it still will not include the parts involving key technologies, China has the precedent of predicting and solving the Trent 900 engine failure at a glance, so Bodi really dare not underestimate it.

But this time, he really thought too much.

Chang Haonan was just making a reasonable guess based on the other party's promotional materials:

"From the information currently released by Pratt & Whitney, the so-called gear transmission is to install a reduction device between the fan rotor and the low-pressure rotor composed of the low-pressure compressor and the low-pressure turbine, so that the fan can work at a lower speed, while the low-pressure compressor and the low-pressure turbine can work at a higher speed, so that both can achieve the best working conditions at the same time."

"The idea is good, but in order to improve integration and reduce volume, the PW1000 series integrates the high-pressure turbine rear bearing and the low-pressure turbine front bearing into the bearing seat between the high-pressure and low-pressure turbines, which is not conducive to sealing and heat dissipation..."

"..."

As the main competitor to the NGME project, Bodi has of course studied the key design features of its opponent and knows that what Chang Haonan said earlier is indeed correct.

But the conclusion of the second half was something he had never thought of.

"That is to say, the opponent's subsequent testing process may not be particularly smooth... there may even be a problem of large-scale rework?"

Although Bodi kept telling himself that this might just be a guess, or even that the cunning Chinese might be setting a trap for him, there was nothing he could do because the prospect was too good to be true.

The progress of LEAP is already lagging behind. If the PW1000 series encounters more setbacks, not only the A320neo, but even the 737max, which originally did not expect to open up the market due to its cooperation with China, may be forced to choose AE1500.

This is a market that has doubled in size, and it is difficult for anyone to remain calm.

However, Chang Haonan waved his hand:
"It is not certain that anything will happen during the testing phase... because this design is not inherently fatal, but it places very high demands on the operators and maintenance personnel, so it is more likely that the problem will be triggered by the brutal operation of an unlucky airline after it is put into use."

In terms of treatment and status, the ground staff of airlines, especially some low-cost airlines, are pure cows and horses, so it is inevitable that there is a gap in work ability and meticulousness compared to the professionals of flight test organizations.

Many details can be operated completely according to the manual requirements during the testing process, but this may not be the case in actual operations.

Hearing this, Bodi also lowered his head and began to ponder silently, as if he was thinking about how he should respond if his opponent really exploded.

Chang Haonan had mentioned this matter only to ease the atmosphere. Now, seeing that Elginbridge's face was gradually returning to normal, he changed the subject and returned to the main topic:

"Let's not talk about the topic for now."

He turned around again and looked at the prototype placed on the transport bracket:

"Although our new technology has withstood the test on other models, from the perspective of aviation safety, the testing work of AE1500 cannot be relaxed at all. Instead, some unique test subjects need to be introduced in the second phase to ensure that the intercooling cycle can be maintained under all working environments that meet the requirements, and even if the cycle is destroyed under the most extreme conditions, the engine as a whole can still ensure basic operation without completely stopping..." If all the previous operations can still be regarded as innuendo, then this sentence is tantamount to a face-to-face output——

Because of the problem that the Courageous had encountered before, after an abnormality occurred in the intercooling cycle of WR-21, other operating parameters also changed rapidly, causing the entire machine to be paralyzed.

Elginbridge didn't even know what expression to put on for a moment. Thinking about how he seemed to be stunned for a long time just now, he had to clear his throat and pretend to say "I understand too" to save face:

“Is the unique test subject similar to the marine gas turbine using indirect cooling and heat recovery technology? Perhaps you can refer to our experience?”

Chang Haonan rolled his eyes secretly, thinking that even if it was similar, he could not refer to your experience. Instead, he needed to learn lessons from you.

But I definitely couldn't say this out loud, so I had to suppress the urge to laugh:

"It's not exactly the same, but don't worry, we will send technicians to guide you throughout the process..."

"..."

……

Similar to any normal visit, unless the situation is very special or someone has already completed most of the negotiation work, the first day after landing will basically be spent walking around and no substantive business will be advanced.

Even if we had landed in Beijing as originally planned, the entire journey would have been even longer.

Now, setting up the troops directly at the airport upon landing is Chang Haonan's streamlined arrangement.

Therefore, after a general tour, several leaders of the Rolls-Royce delegation were arranged to rest in the nearby hotel and prepare to attend the celebration dinner to be held later.

Although the specifications of this visit were obviously unusually high, it was ostensibly for the purpose of handing over the test prototype and celebrating the official entry of the AE1500/NGME project into the second phase.

So no matter what the two sides are secretly thinking, they still have to maintain a harmonious appearance.

As for the handover work at the technical level, of course the engineers in the delegation are responsible for it.

Almost immediately after the car started, Elginbridge whispered to Partridge:
"Well, did you see anything?"

The latter thought for a moment, then replied:

"All we can see is that the other party integrated the intercooler and the stator blades of the high-pressure compressor together, and then set up an additional device before the air inlet of the intercooler duct to make the engine adapt to the cycle parameters of the cooling medium under different conditions..."

It should be said that although Patridge is a little arrogant, his basic skills are still quite good.

After just a few glances at the actual object and the simple design drawing, I was able to roughly guess the function of the condensation control module on the AE1500.

After hearing his clear and logical analysis, Elginbridge's eyes lit up, as if he had grasped a life-saving straw:
"Can we apply the same idea to our marine gas turbines, without the help of those Chinese people to solve the problem?"

As a senior executive of Rolls-Royce Group, this was the first time in his career that he realized how difficult it was to get people to do things for him.

Even if you know that others are mocking you in a sarcastic way, you can only laugh it off or just play dumb.

The short few minutes from getting off the plane to getting on the car felt like an eternity.

If he could solve the problems of WR-21 and MT30 alone, he would be eager to fly back to England tonight.

However, Partridge shook his head:
"Our design ideas were completely different from the other party from the very beginning, so it was difficult to directly refer to each other... and more importantly, the circulating working fluid of marine gas turbines is water, while the circulating working fluid of aircraft engines is gas containing water vapor, which is completely different from a thermodynamic point of view..."

Elginbridge stared at the other person for a long time, then he sighed and leaned back in his chair in a self-abandoned manner:

"Let the negotiation team get ready. The task ahead will probably be quite difficult..."

(End of this chapter)