The ARJ21 regional airliner has completed the assembly of the turbofan 17 engine, and these two engines have been installed on the aircraft and can be used for test flights.

Before the test flight, the publicity work of the commercial aviation company is very loud, this is a commercial aircraft, not a military aircraft, all kinds of propaganda in the major media is very hot, before the test flight has begun, many people know that the ARJ21 regional airliner is equipped with a new engine.

On the Internet, there were enthusiastic comments, and there were a lot of reports about the ARJ21 regional airliner.

"Our ARJ21 regional airliner will be equipped with a new engine for a test flight, I am really looking forward to it!"

"Yes, it is still a domestic fourth-generation turbofan engine, the engine code is turbofan 17, and it is manufactured by Tianfeng Technology Company!"

"This is a real domestic regional airliner, the engine used in the previous ARJ21 passenger aircraft is imported, and the engine installed with imported aircraft cannot be regarded as a real domestic aircraft."

"Yes, only if it is equipped with a domestic engine, this can be regarded as a genuine domestic aircraft."

“……”

The heated discussion on the Internet is very hot, not only there are many beautiful color pictures of the ARJ21 regional airliner, but also some close-ups of the aircraft engine.

In general, this ARJ21 regional airliner is not much different from the previous ARJ21, the difference is only in the engine, so many pictures on the Internet are local close-ups of the engine.

"This is the turbofan 17 engine, and the engine looks very beautiful!"

"Yes, very pretty!"

“……”

When the engine is installed on the plane, the first thing you see is the fan part, the beautiful fan part, which is very eye-catching. It's visually striking.

Li Tianfeng naturally knew about such a large-scale enthusiastic response, and was in his office, landing on a well-known domestic website, looking at the report on the test flight of the ARJ21 regional airliner.

"Knock, knock, knock!"

After the knock on the door, Liu Wei came in with a happy face. Said happily: "Boss, COMAC has sent an official invitation letter to conduct a grand test flight the day after tomorrow and invite us to participate." ”

Li Tianfeng smiled: "This test flight of the ARJ21 regional airliner is also a big event, and it is also the first flight of our turbofan 17 engine, and we will definitely participate." ”

Liu Wei nodded and said, "Boss, this test flight, COMAC attaches great importance to it." The publicity is also very good, and I heard that when the test flight is carried out, more than a thousand people will watch it. ”

Li Tianfeng nodded, you can imagine the popularity of the test flight, this test flight, is the first flight, the ARJ21 regional airliner equipped with a turbofan 17 engine for the first flight.

Fitted with two turbofan-17 engines, the ARJ21 regional airliner will undergo a series of test flights. A total of 57 routes were included to test the route suitability of aircraft and turbofan 17 engines, except for the airworthy type. It will also verify the economic benefits of the aircraft, as well as the high-temperature environmental requirements of the western plateau.

The most significant economic benefit is ultra-low fuel consumption, which will fully test the turbofan 17 engine to verify whether it is really as designed, with ultra-low fuel consumption. It has significant economic benefits.

Li Tianfeng said: "Mr. Liu, this is also the first flight of our turbofan 17 engine, let's go and take a good look at this first flight." ”

Hearing this, Liu Wei nodded happily. Liu Wei can understand what Li Tianfeng meant, that is, to go to more people and appear as grand as possible.

Liu Wei said: "Boss, I'll arrange the matter." ”

Li Tianfeng nodded: "Book tomorrow's plane, we will leave tomorrow, and the day after tomorrow we can easily watch the first flight of our turbofan 17 engine." ”

Liu Wei nodded and happily walked out of Li Tianfeng's office.

………

Donghai City, an airport.

Here, today's unusually lively, the visiting area, is a sea of people, look at the number of people, not to mention a thousand people, Li Tianfeng led the people of Tianfeng Technology Company, also in the visiting area. And it is very good location, VIP area.

Xu Lilong, who was next to him, said: "Boss, I heard that in this test flight, COMAC invited a lot of people from the aviation industry, as well as a large number of media people, as well as people from many domestic and foreign airlines. ”

Li Tianfeng said with a smile: "Ma Delong is very business-minded and has made full use of this great opportunity, and I estimate that after this test flight, the orders for the ARJ21 regional airliner will increase a lot." ”

Xu Lilong said with a happy face: "Boss, the increase in orders for ARJ21 regional airliners is a good thing for us, and it is estimated that COMAC will place another order for turbofan 17 engines on us." ”

Hearing this, Li Tianfeng also smiled happily, this is really the case.

At 9 o'clock in the morning, after a brief ceremony, the test flight was about to begin, and the ARJ21 passenger plane that was about to take the test flight also slowly drove over and began to enter the runway.

"The plane is coming, it's coming, everyone, look!"

Seeing this plane, many people shouted excitedly, and those media reporters even set up their cameras and took pictures of the plane.

Everyone's eyes have focused on this aircraft, and I have to say that the ARJ21 regional airliner is very beautifully designed. It adopts a five-seat double-circular fuselage per row, a lower single wing, a high flat tail, a front three-point retractable landing gear, and a tail crane two engine layouts.

In addition, the ARJ21 adopts a number of supercritical wings with large sweep angles and winglets integrated with the wing, which can improve the cruising performance of the aircraft within the design cruising weight range. The efficient lifting device enables the ARJ21 aircraft to have excellent low-speed performance;

At the same time, the application of supercritical wings increases the relative thickness of the wings, thereby reducing the weight of the wing structure and increasing the capacity of the wing fuel tank. The use of this technology not only improves the flight quality, but also reduces fuel consumption, increases the range and commercial load capacity.

Today's test flight of the ARJ21 passenger aircraft, white is the main color, in conjunction with the festive red, plus the beautiful wings, it looks very beautiful.

Li Tianfeng looked at the plane, and couldn't help but nodded, regardless of the comprehensive performance of the aircraft for the time being, just looking at the appearance design of this aircraft is very good.

In everyone's eyes, the plane slowly entered the runway, and the engine working sound was very smooth and very slight.

At this time, the engine should be in a slow state, the so-called slow state, that is, the minimum power state of the engine, the engine speed is 25% to 30% of the maximum speed, and the power is 3% to 5% of the maximum thrust.

The sound is very slight, very steady, if it weren't for the fact that the plane began to enter the scheduled run, the people in the entire visiting area gradually quieted down, and the sound of the engine working could not be heard.

"The plane is so stable and quiet!"

"Yes! If you don't listen carefully, you really can't hear the sound of the engine working. ”

"It's definitely very comfortable to fly on a plane like this!"

Seeing the plane enter the designated runway, the originally quiet visiting area gradually became lively again, and everyone was lively and talked about the plane, especially the kind of stability and quietness that came out of the table just now.

The plane entered the runway, and after waiting on the runway for a few minutes, the plane started moving again and began to taxi on the runway.

"Look! The plane is taxiing, and it looks like it's about to take off! ”

Many people shouted excitedly, their tones were full of excitement, and the engine gradually increased its power from the slow state to the take-off state.

The take-off state, which is generally the maximum power state, the sound of the engine is obviously louder, the engine speed has also reached the maximum speed, the thrust has risen sharply, and the aircraft has accelerated rapidly.

The engine reached the maximum power state, the sound was still stable, Li Tianfeng heard the sound of the engine working, nodded, and said in his heart, the noise of the engine is not big, among similar engines, it is relatively small.

"The plane has accelerated and is ready to take off!"

"The plane accelerates beautifully, it's still very stable, and the sound of the engine is so good!"

"Yes! And the sound is not too loud, very stable, and it sounds very powerful! ”

The ultra-low noise, at this moment, is vividly reflected, and many people are surprised, especially those in the airline, seeing this scene, hearing the sound of these two engines working, many people look at each other, and then nod slightly.

The plane accelerated, faster and faster, and then, in the midst of all the attention, the plane left the runway and flew towards the blue sky, gradually moving away, and the plane became smaller and smaller in everyone's eyes.

Successfully fly into the blue sky!

Table xiàn perfect!

Seeing this scene, thousands of people applauded in the entire viewing area, and the thunderous applause lasted for a long time. Everyone in Tianfeng Technology Company, including Li Tianfeng, was happy and joyful.

Sun Xiaoping even said: "Boss, our turbofan 17 engine has made its first flight successful!" ”

Li Tianfeng nodded vigorously and said, "Yes, the first flight was successful!" ”

The plane gradually disappeared, and finally disappeared completely from everyone's eyes, Ma Delong walked up to the rostrum vigorously, looked into the microphone, and said happily: "Gentlemen, ladies ......"

Maderon's words were full of joy, and this test flight was perfect. The ARJ21 passenger aircraft used to be equipped with imported engines, and at the beginning of its development, such a test flight was also carried out, but in Ma Delong's impression, the ARJ21 passenger aircraft was not as smooth and smooth as the test flight just now.

Ma Delong's speech lasted for more than ten minutes, and then, Ma Delong announced that the test flight was a complete success!

The thunderous applause sounded again, and today's Ma Delong completely became the focus, and after speaking, in the midst of the applause, Ma Delong walked quickly off the rostrum and walked straight towards Li Tianfeng.

…………

Today's three watches, the third one is sent!

I ask for a commuter pass, and I recommend the support of a ticket! (To be continued......)