Design a room.

This is the general design office, responsible for the overall design of the drone, and now, several design backbones are looking at a design sketch with great interest.

Here is the general design sketch of the "Black Ghost" UAV, the main design dimensions, as well as the aerodynamic design and aerodynamic layout of the aircraft, the design sketch is clear.

"Niu, who drew the design sketch here, with this design sketch, there is basically nothing to do with us!"

"Yes, with such a clear design sketch, we have a lot less design work, and we just need to develop a specific design on this basis."

"Such a sketch of the design of the ox fork will not be from the hand of Lei Zong!"

In addition to admiration, everyone was very curious, who was so good at drawing such a design sketch, and some people looked at the handwriting on the design sketch seriously.

"I am familiar with Mr. Lei's handwriting, this should not be from Mr. Lei's handwriting, it may have been drawn by Mr. Li himself."

What the! Drawn by Mr. Li!

Many people were inexplicably stunned, everyone joined Tianfeng Technology Company for only a few months, not a long time, in everyone's impression, Li Tianfeng is the image of the company's CEO, and he is not even able to hang up any number with technical proficiency.

Tang Zhizhong, the director of the first design room, happened to walk in, and saw several of his design backbones, who were surrounding a design sketch, with curious and excited looks on their faces, Tang Zhizhong couldn't help but come over and asked, "What's going on?" ”

Tang Zhizhong is a veteran of Tianfeng Technology Company, joined Tianfeng Technology Company six years ago, used to be the design backbone of the aero engine design and development center, and is now promoted to the director of the design room of the aircraft design and development center.

Tang Zhizhong is proficient in both aero engine design and aircraft design, and was the first of the establishment of the aircraft design and development center. One of the hundreds of designers transferred from the headquarters of Tianfeng Technology Company.

Seeing his director coming, one of the design backbones said: "Director Tang, look at this design sketch, how clear it is, the overall design work of the drone is almost half completed." I don't know who it is, so good? ”

Tang Zhizhong saw the familiar handwriting of the design sketch, and couldn't help but smile and said: "This is the design sketch drawn by Mr. Li himself." ”

It was really drawn by Li Tianfeng himself!

Everyone was stunned for a while, and they really couldn't understand that Li Tianfeng, as the boss, still had such a strong technical level.

Tang Zhizhong glanced at everyone, taking in everyone's expressions, Tang Zhizhong said: "You will know the technical level of Mr. Li after staying in the company for a long time." It's not that we can look at it, in our hearts, Mr. Li is a mountain-like existence. ”

Someone exclaimed, "Director Tang, this is impossible!" ”

Tang Zhizhong said: "What's impossible about this, Mr. Li's technical level is very high, and every aero engine we designed and developed before was basically made by Mr. Li." ”

Yes!

Everyone looked at each other. I didn't believe it.

Tang Zhizhong said: "You will know in the future how profound Mr. Li's technical level is. "Finished. Leaving a group of technical backbones who couldn't come back to their senses for a long time, Tang Zhizhong walked into his office.

………

Commissioning Engineering Center.

Two turbofan 25 engines, completed a series of ground test cars, and even included the test run of the high-altitude platform, and the test performance was perfect. In two engines are being packed.

Not far away, an army green truck is already waiting there, and the two turbofan-25 engines will be transported by this military truck directly to the J-20 aircraft factory.

Soon, the packing was complete. The two engines were loaded into the military truck one by one. Then drive out of the test engineering center.

In the office.

Li Tianfeng was talking to Zhang Haiping on the phone, and Li Tianfeng said: "Minister Zhang, the two turbofan 25 engines have been loaded and shipped out, and they will soon be loaded with J-20 fighters." ”

Zhang Haiping said: "Okay, great, our J-20 fighter will be equipped with a turbofan 25 engine right away, and it will be able to conduct a test flight immediately." ”

Li Tianfeng's heart is also light, if the turbofan 25 engine successfully passes a series of test flights, it will immediately enter mass production, and he can be regarded as successfully completing the military's task.

………

A test flight site.

This is a specialized test flight test airport, which is under the exclusive management of the military, and the pilots who test the flight are all active elite pilots.

In the distance, a brand-new J-20 fighter is slowly moving, this is a J-20 fighter equipped with two turbofan 25 engines.

The J-20 fighter was installed with a new engine for a test flight, and the military attached great importance to it, not only Zhang Haiping came, but also Mr. Ma, who was assembled in the final assembly, and Mr. Wei originally planned to come, but there was an important meeting and could not be made.

On the test flight observation seat, it can be said that the stars are shining, not only the general Ma Zong, the lieutenant general Zhang Haiping, but also many generals in the air force.

In addition, Tianfeng Technology Company, J-20 Fighter Design Institute, manufacturing unit, and a large group of people were also on the observation seat. Li Tianfeng, Sun Xiaoping are here, the chief designer of the J-20 fighter, the chief engineer of the production and manufacturing of the J-20 fighter, everyone is also here.

Today, it is a major event for the J-20 fighter.

"The plane is normal, the engine parameters are normal, the fuel is normal, please take off!"

A colonel was personally responsible for directing the test flight, and the comrade colonel said loudly: "You can take off!" ”

Everyone saw this J-20 fighter and began to accelerate on the runway, and under the impetus of two turbofan 25 engines, the plane accelerated rapidly, and then left the runway and flew towards the blue sky.

Successful takeoff!

Many people applauded, and Li Tianfeng and others also smiled slightly, knowing that the test flight had begun.

On the huge high-definition display, the figure of the J-20 fighter is displayed, and next to it, there are a series of parameters, such as acceleration, climb rate, etc.

The J-20 fighter flew into the blue sky, and the test flight stage was still regular and upright, and there was nothing outstanding.

After the initial stage of the test flight, the test pilot sent a request for instructions on whether to carry out the "super cruise" test flight verification. The so-called "supercruise" is supersonic cruise.

Previously, the J-20's super-cruise record was 1.5 times the maximum cruising time of 7 and a half minutes at a speed of sound.

The colonel's commander replied that he could conduct a "super-cruise" test flight verification.

The entire observation seat became quiet, everyone stared closely at the high-definition large screen in front of them, looking at the J-20 fighter on the screen, everyone knows the importance of the "super cruise" ability for an excellent fighter.

The "overcruise" command was issued, and everyone saw that the parameters on the screen began to change, and the flight speed of the aircraft soon exceeded the speed of sound, and continued to increase rapidly.

"Look, it's 1.5 times the speed of sound!"

"Twice the speed of sound!"

Many people were excited, and Zhang Haiping even threw an admiring look at Li Tianfeng, and Li Tianfeng at this moment was not shocked.

Twice the speed of sound, it is already a new record for the J-20 fighter, but it is far from reaching the limit of the turbofan-25 engine. This J-20 fighter, flying at twice the speed of sound, attracted everyone's attention.

Five minutes, ten minutes, fifteen minutes......

A new record is about to be born!

Sure enough, it took a full thirty minutes for the J-20 fighter to begin to slow down, end the supersonic cruise test flight, and the test pilot's voice was also clearly heard.

The plane is normal!

All the parameters of the engine are completely normal!

Whether it is Mr. Ma of the general assembly, or the generals of the Air Force, as well as the designers, engineers and technicians of the J-20 fighter, everyone is happy.

Cruising at twice the speed of sound and cruising for half an hour has encouraged everyone's confidence, all of which is mainly due to the fact that the J-20 fighter is equipped with two excellent turbofan 25 engines.

Mr. Ma, who was in the final assembly, said happily: "Okay, great!" Our J-20 fighter has simply come to a qualitative improvement. ”

Excellent "super cruise" performance is very important for an advanced fighter, which can not only quickly engage the enemy, but also quickly leave the battlefield, and greatly improve the survivability of the fighter.

The comrades of the Air Force were also happy, and said happily: "Mr. Li, thanks to your turbofan 25 engine, with such an excellent engine, the performance of our J-20 fighter has also been greatly improved." ”

Li Tianfeng smiled happily, feeling a sense of accomplishment in his heart.

The J-20 fighter's "super cruise" test flight verification was completed, and after the plane made a large circle at high altitude, it began to reduce its altitude and land towards the runway.

Seeing the successful landing of the plane on the runway, all of a sudden, warm applause rang out, everyone applauded, the chief designer of the J-20 fighter, held Li Tianfeng's hand tightly, and said happily: "Mr. Li, thank you, our J-20 fighter finally has a qualified engine!" ”

Gradually, the warm applause stopped, and the colonel, who commanded the test flight, walked over quickly, stood upright in front of Mr. Ma and others, saluted, and reported loudly: "Report to the chief, the test flight was successfully completed, the engine parameters are normal, and all the parameters are normal!" ”

Mr. Ma happily returned a military salute, and then said with emotion: "We finally have a world-class engine, great!" ”

Turbofan 20 engine, world-class military small channel ratio turbofan engine, turbofan 25 engine, the world's top military turbofan engine!

After the first test flight of the turbofan 25 engine began today, a series of test flights began in the following period, because a series of complete test flight projects have been completed at the high-altitude platform, and all the test flights here took less than a month to successfully complete.

According to the requirements of the military, the existing J-20 fighters were all replaced with turbofan 25 engines, and then, Tianfeng Technology Company also started the small batch production of turbofan 25 engines.

The turbofan-25 military kept it secret, but in the military's internal newspapers, the test flight of the turbofan-25 engine was reported, and the J-20 fighter equipped with the turbofan-25 engine appeared on the paper and attracted the attention of many military people.

………

Today's two watches, the second one is sent! (To be continued......)