Chapter 1127 Trent 900, First Flight!

Everyone is willing to listen to compliments.

Casore is naturally no exception.

Although he guessed based on intuition and the length difference between the two sentences, the other party probably did not mean this at first.

But in the end I decided to accept the latter statement.

After all, according to common sense, there shouldn't be much difference.

And at this juncture, it’s not the time to dwell on these minutiae:

"I can go back to France, but..."

Casore looked at the design drawings in front of him and hesitated a little:

"Although the pre-joining process is not unfamiliar to our workers, it has never been tried on workpieces of this size and characteristics before, and there is not too much time for trial and error this time, so your process needs to be very Just be safe..."

"Don't worry, we will provide the parameters directly, you just need to follow them..."

Liang Shaoxiu replied, but soon seemed to remember something again, and emphasized again:

“The only thing that needs to be noted is that in addition to the process issues within the unit, we must also consider the process-related issues caused by the gap flow between units, which did not exist in the previous pre-connection process..."

"For example, between the two units, for unit 1, the left side of the wall plate is the positioning datum, and all the degrees of freedom on the left side of the skin and girders containing manufacturing errors are constrained, while all the degrees of freedom on the right side except the Z direction are also constrained. is constrained, but due to the influence of many factors such as part manufacturing errors and positioning errors, applying pre-connection to reduce the gap of unit 1 will cause the gap to flow to unit 2 and increase the initial gap of unit 2..."

"..."

Kasore suddenly felt that he seemed a little confused.

In fact, this is normal.

Because many related proper nouns were coined by Chang Haonan by referring to his past life experiences, or even completely casually.

It's barely understandable in a Chinese context, but after Liang Shaoxiu's simple and crude literal translation into English, it does seem more abstract.

Fortunately, he only briefly introduced the concept, and it was impossible for a foreigner like Casore to talk casually about the specific design methods.

Otherwise there will be more linguistic barriers...

In short, a week later, Casore took the first set of technological solutions provided by Liang Shaoxiu and boarded a chartered flight back to France.

As for other subsequent plans...

Because time is so tight, we can only design while producing.

The painter was ecstatic and it belonged to him.

…

Although the Dassault Group is headquartered in Paris, in order to specialize in the production of the new generation of Falcon series business jets and Rafale fighter jets, they still placed their new factory in Toulouse, the holy land of the French aviation industry.

That’s right, together with Airbus, Socata, ATR, Snecma, ONERA and many other heroes, they form the Toulouse Aviation Industrial Zone.

Therefore, Casore did not even return to Paris at all, but flew directly to Franchar Airport with a group of entourage.

Compared to the famous Blagnac International Airport, it used to be the home of the French First Airborne Training Regiment, so it is much smaller.

There is only one runway. Fortunately, after being extended, it can barely take off A330/340 aircraft.

However, due to the advantage that it is not open to the public, it is a very important place for these aviation companies in Toulouse, especially the complete aircraft companies.

Needless to say, manufacturers of small aircraft such as ATR and Socata almost all use this place as a base.

Even Airbus often conducts test flights or ships parts here.

After the establishment of Dassault's new factory, considering that it was difficult to conduct some military aircraft testing at a civilian airport, it also obtained partial use rights here.

However, before Kasore's chartered plane landed, he noticed in mid-air that a large four-engine passenger plane was parked on the tarmac next to him.

It looks like an Airbus A340.

But not quite.

As an internationally renowned 5APU, the four engines of the A340 are quite compact compared to the overall size.

But now, even from a distance of several thousand meters, it is not difficult to find that on the inside of the left wing of that aircraft, a behemoth with a diameter almost twice that of the other three is installed...

Meanwhile, the airport ground.

Charles Champine and Tim Purdy were standing side by side not far from the plane, watching a group of technicians conducting final inspections before takeoff.

Although there were a lot of twists and turns in the process, fortunately the problem was solved quickly and did not have a too bad impact on the ground testing of the Trent 900.

Finally, the installation was completed in early February 2004, and two rounds of successful ground taxiing start tests were conducted three days ago.

And today is the day this model goes to heaven for the first time.

"In fact, at the beginning, many users felt that your aircraft engine design plan was a bit too radical, and they hoped to use Engine Alliance's models in the first batch of delivered products."

Champion suddenly spoke.

As a European company, Airbus cannot be too biased due to commercial considerations, but at least for himself, he is still happy to see Rolls-Royce models becoming mainstream.

Bodi sneered disdainfully:

“If the technology wasn’t radical, how could we have such leading performance now?”

That's what he said, but even though everything had passed, Bodi was still sweating a lot on his back——

In fact, the design of the Trent 900 is too radical.

As a result, there were large-scale process callbacks and a testing accident that almost shattered the entire model.

Of course, the latter is strictly not directly related to design.

The company that produced the substandard oil pipe has been permanently blacklisted by Rolls-Royce and has been replaced by three other unnamed suppliers.

In short, if it were not for the good luck in finding foreign aid, the competitor GP7200 might have caught up...

"That's true..."

Champine nodded:

"To be honest, the fuel economy and quietness of the Trent 900 are indeed the best I have ever experienced in my career..."

"Of course."

Bodi straightened his waist involuntarily:

"Not only that, in terms of pollutant emissions, although the Trent 900 is expected to be put into production before the end of 2005, it still complies with the CAEP6 emission regulations... This is something that many models currently under development have not achieved."

According to ICAO regulations, engines put into production after 2004 use CAEP4 emission standards, and the more stringent CAEP6 will be launched after 2008.

In fact, the "many models" he mentioned are not many.

It's just for GP7200...

While the two were talking, the Dassault charter plane that had been preparing to approach the airport had landed smoothly on the runway.

Since there are no annoying commercial flights here, all the rest of the day belongs to Airbus and Rolls-Royce.

Soon, as the real APU made a crisp blasting sound, the A340 numbered 341 successfully started all four engines.

A low roar then reached everyone's ears.

As an aerial test platform, the aircraft's No. 2 engine can be controlled independently by testers in the cabin, so it remains at idle.

The other three units carefully controlled the thrust and allowed the aircraft to smoothly slide out of the parking position.

In order to ensure safe take-off, large aircraft taking off from Franchar Airport need to move backward to the end of the runway before they can start to accelerate.

For Platform 341, there is an additional step.

Just wait for the speed of the No. 2 engine to slowly reach the standard.

As a prototype for testing, it certainly cannot be operated as roughly as the production model.

Moreover, there are still some subjects that need to be completed in this process.

At the same time, inside the cabin.

Jin Xu was sitting in a somewhat out-of-the-way position, observing the situation inside the entire aircraft.

According to the previous agreement between Rolls-Royce and Aerodynamics Group, he will participate in the entire Trent 900 platform flight test in the name of technical consultant.

He became the only Asian-faced staff member on the entire plane.

Of course, according to industry practice, he could only watch but not interfere.

But that's enough.

The reason why Chang Haonan sent him here was to fully understand EASA's standard process for civil aviation engine testing and prepare for the subsequent design and production of the AE1500.

Therefore, Jin Xu didn't even want to blink at this time, for fear of missing some detail.

About ten minutes later, several tests before takeoff were completed, and the speed curve of the No. 2 engine reached about 60%——

After all, it is a model with greater thrust. If it uses all its strength, the No. 1 engine on the same side will need to be reduced in thrust and trimmed.

After confirming that the speed was stable, an engineer next to him picked up the radio:

"Engine No. 2 is ready for takeoff!"