Mid-June.

At noon, the sun hangs in the middle overhead, shining a warm golden ray.

It is past the season of mango planting, and in most places in the south it is already very hot (rè) and entering the scorching heat.

However, the Kat Station in the Hengduan Mountains (shēn) does not feel like it is summer, and the maximum temperature during the day has remained around 22 degrees.

Two J-10A and two J-11A have just finished training this morning, slowly lowered their flight altitude, faced the only two runways at the airport, and landed smoothly and taxied one after another.

"It's finally over."

In the tower, Yang Luo stretched his waist, put down the intercom, and after signing the flight (rì) journal, he said to the deputy commander on the right: "Staff Officer Zhou, I'll eat first." ”

Staff Officer Zhou said: "Captain Yang, you go first, I have to wait a little longer, there is still a plane that has not landed yet." ”

"Didn't they all land?" Yang Luo, who was about to leave, asked suspiciously.

"It's from another field." Staff Officer Zhou replied.

Although Yang Luo is the supreme commander of the tower, he rarely cares about the affairs of the tower (qíng), and there is no fixed time to command at the tower. Like today, he flew up first before he went to the tower to command, and Staff Officer Zhou also changed from a commander to a deputy commander, so Staff Officer Zhou did not report to him, and who knows when he will leave.

"Where did you come from? Gannan Station of your division? Yang Luo asked.

"No, I don't know the specific station, and I only received the notification this morning." Staff Officer Zhou shook his head and said, "However, it should have something to do with you." ”

"How?" Yang Luo asked.

Staff Officer Zhou flipped through the flight (rì) chronicle and said: "The model is also J-10C, and the call sign is 302. ”

The call sign of 302, Yang Luo is very familiar with it, isn't this Ye Jianlong's call sign?

Generally speaking, fighters of the same type will not have repeated call signs in the entire aviation unit, and one call sign corresponds to one fighter.

The same call sign may only appear between different models, but it can also be distinguished.

Like Yang Luo's 301, in fact, for the sake of convenience, after the reduction, his specific call sign is C10301, and the front C10 actually points out that the model is J-10C.

During the normal transition flight, the landing station will be notified, and there will be some simple information about the landing aircraft, which contains specific call signs.

"It does matter, he's my captain." Yang Luo nodded and asked, "How long will it take?" ”

Staff Officer Zhou looked at the electronic clock hanging on the tower and said, "There are still twelve minutes." ”

"Okay, I'll wait before I go." Yang Luo said, took the flight (rì) zhi, found the page of Ye Jianlong's landing information, and signed his name.

Who commands, who signs.

More than ten minutes later, Ye Jianlong's voice requesting landing sounded from the tower: "Call the tower of the CAT station, C10302 requests to enter the field and land, over." ”

Ye Jianlong used a specific call sign, and did not use the reduced call sign plus model.

This is a matter of personal habit and there are no specific rules.

Yang Luo likes to use the reduced call sign and then report the model he is driving.

"The tower received, there is no continuous (xìng) wind direction, the wind speed is 0.5 meters per second, the field pressure is 780, the altitude is 2100 meters, and 302 can land."

Yang Luo pressed the call button and said, "Team Ye, I haven't seen you for a long time." ”

"302 received, uh, Yang Luo, why are you commanding at the tower." Ye Jianlong hesitated for a moment and said.

"Why can't it be me? I have the final say at the CAT station, and I can be wherever I want. Yang Luo said unceremoniously, "You land first, and I'll come down to find you right away." ”

"Hey, wait, did you leave me lunch, I'm still hungry."

Ye Jianlong was indeed hungry, after all, he had been flying for more than four hours.

"I haven't eaten yet, so I'll be together." Yang Luo said with a smile.

The roar of the engine in the sky became louder and louder, and a J-10C fighter quickly became larger, appearing in the eyes of everyone in the tower.

After Ye Jianlong landed smoothly on the runway and slid away, Yang Luo threw down the intercom and left quickly.

When Yang Luo arrived at the hangar, Ye Jianlong had already rushed down from the cockpit and was chatting with Gou Quan.

"Team Ye, you are welcome to guide the work." Yang Luo laughed and stepped forward.

"Guide, don't scold me." Ye Jianlong rolled his eyes and said.

“……”

With an inadvertent glance, Yang Luo suddenly found that the flight engine of the 302 J-10C was obviously different, as if it had been replaced.

"Team Ye, why did your car change its flight?" Yang Luo asked, walking towards the tail of the plane.

What appeared to Yang Luo was an engine with a serrated shēn design, which was the biggest difference from the previous AL-31FN.

"Is this too good?" Yang Luo asked uncertainly.

At the beginning of the design, the service life of the AL-31FN and the problem of being stuck in the neck were taken into account, so the Taihang engine and the AL-31FN engine are interchangeable.

"Taihang-10C, ternary vector propulsion version." Ye Jianlong said with a smile.

"I'll go, the dawn aviation is finally strong, and Taihang can finally be applied to single-engine fighters." Yang Luo sighed.

Even after the Taihang engine was finalized for more than ten years, there were still many problems, and it only dared to be equipped on twin-engine fighters, but not on the single-engine J-10.

I still remember that when I was in the test flight institute, the J-10D prototype was installed with the Taihang engine, but the engine was a little problematic at that time.

Unexpectedly, after half a year, Dawn Aviation Development Company solved the problem, and it could pass the finalization review, which can be applied to the single-engine J-10 (shēn).

"How does the ternary vector Taihang-10C compare to the AL-31FN?" Yang Luo asked.

Vector engine refers to the installation of a diversion system on the tail nozzle of the engine, so that the high-temperature and high-pressure gas changes the direction of the spray, and then changes the thrust state of the whole machine to complete a series of maneuvers.

There are two types of vector jet systems: binary and ternary. The engine tail nozzle of binary vector can only swing up and down, and the high-temperature and high-pressure gas can only change the up and down direction; The engine tail nozzle of the ternary vector can swing in all directions, so that the high-temperature and high-pressure gas can change direction in all directions.

Ternary vector engines are more advanced and more complex than binary vectors.

The AL-10FN equipped on the J-31C today is a binary vector engine.

"The thrust is greater, the maneuver is stronger, the acceleration can be about the same, and the ground start time is about the same, which is generally better than Maozi's." Ye Jianlong thought for a moment and replied.

"Good thing, are you the only one who has changed it, or do you have to change it?" Yang Luo asked, I really want to touch the Taihang-10C and try the difference in feel.

"We all have to change, our two squadrons have been replaced, only one of you is left, and the four aviation inventions will be shipped over tomorrow, and there will be engineers from Dawn Aviation with them." Ye Jianlong said, "One of the things I came over is this. ”

Hearing Ye Jianlong's words, Gou Quan, who was following on the side, instantly turned into a bitter gourd face.

Changing the flight is a big project, not counting the time of the test flight, at least more than a week, if you add the time of test flight commissioning, half a month is not strange.

Although there are engineers from Dawn Hangfa, you don't have to think about it to know that the engineers only play a guiding role, and they will not do it easily, and it is the maintenance team led by Gou Quan who really does things, which is the responsibility of the maintenance.

PS: The two chapters that were updated yesterday were blocked.,Tried to unblock once.,The result is a failure.,The next unblocking will be two days later.,Depressed.。