Even though he is not very expert, Long Yun can see that these two fighter jets are in very good condition.

What is being tested is a J-7iim wing assembly. Under the out-of-the-art configuration, it has a complete body detection sensing line; through sensors arranged in different positions, Longyun can easily see the strength diagram of the entire wing member from the screen.

After observing the display of the wings, the pilot nodded with satisfaction: "Well, it's not bad. Although there are some strength defects, it's still OK. The fuel tank sealing is fine." He pointed to a data section that was beating and told Long Yun that the fuel tank pressure test is being conducted here. If there is a violent fluctuation, it means that there will be problems after going to heaven.

"Oh, by the way, these old aircraft have some slight leaks of oil, which is not a big deal."

Soviet fighter jets have been flying many times in the parallel world. Long Yun is already commonplace with this situation and nods knowingly.

After inspecting the two wings, the pilots continued to connect the line to the fuselage and conduct detailed inspections in the next step.

Climbing up the boarding ladder, Long Yun looked at the instrument layout in the cockpit with a little curiousness. For the sake of fair competition, the Federation stipulated that except for the safety monitors that must be installed, the instrument system and cockpit layout of the fighter shall not be arbitrarily changed, so there are still dense disk-type instruments inside, which made people a little dazzled for a while.

However, the ejection seat is quite new. The purchase price of this set of ejection equipment alone is about 2 million yuan, which is also a necessary equipment for IFU certification. This thing is used to save your life in case of a situation, but you can't be careless at all.

In contrast, the engine situation is not so ideal; it is not that there is any fault, but that the WP-7c turbojet engine standard equipped by the J-7iim was too old. When the contract was signed, the "Starlight" also said: If it were not for the transfer with the airworthiness certificate, the current engine with severe pollution and inefficiency would not even be approved.

While inspecting, we were familiar with the body with the drawings and instructions, and several people were busy until the night before the completion was successfully completed.

After a busy day, all parts have been tested. If you confirm that there is no problem, you can conduct a ground running test.

The next morning, Long Yun, who came to the training center, walked into the hangar through the side door. Seeing that the lights in the hangar were bright, Long Yun realized that Liu Wei came earlier than him and was already busy with the pilot and others.

Open the wide hangar gate, and under the reflection of a rising sun, two silver-white J-7iims were quietly parked in the hangar, as if they were looking forward to their attack again after a long period of unemployment.

Compared with the tall and spacious hangar that can accommodate heavy fighter jets, the J-7, which is only fourteen meters long and has a wingspan of only seven meters, looks quite light. The small central shock cone and converging air intake, paired with a simple triangular wing, look very agile and capable.

Seeing that the ground crew was collecting the inspection lines and pipelines on the ground with his assistant at this time, Long Yun did not want to disturb their work, so he came to a corner of the hangar to check the backup engines transported in the same batch.

Unlike the engine in the installed state, the two WP-7cs placed on the pulley bracket are obviously in factory state. The pipes and components have a fine oil seal, and the front and rear covers and some fasteners have not been moved. It seems that they have never been tested, let alone the installed ones have been used.

Long Yun didn't know much about the WP-7 series engine. He only knew that this product that China's aviation industry copied from the Soviet p11-f-300 engine in the early days was indeed not technically advanced, and it can even be said to be completely out of date today. Of course, for light fighters like the J-7, the afterburner of more than six tons of WP-7c is enough; the more recent WP-13 has greater thrust and fuel-efficient, but the price of a single 4.7 million yuan is similar to the price of the second-hand aircraft in front of him. Long Yun really has no way to replace it now.

"Captain Dragon!"

Hearing the greeting behind his back, Long Yun was not very used to it. He turned around and said hello to the pilot who raised his hand to greet him.

"How much fuel should we add in the morning?"

“How much is added?”

Long Yun had never thought about it. Can't it be possible to fill it up directly? After looking at the idle oil pumps and pipeline equipment in one corner, he suddenly remembered: the fuel in the aviation center is stored and supplied in a centralized manner, and teams are not allowed to add or unload the fighter's oil.

This rule is quite necessary. Since it is not a real battle with real swords and guns, but competition, safety must always be the most important factor. Since the missiles used in aviation competition are all models specially used for competitions, there is no warhead on it at all, the biggest hidden danger for aviation bases is fuel.

When there were no rules for aviation competition in the early days, there were accidents due to irregular refueling processes. Nowadays, the aviation centers refuel on site, and after the flight was over, the oil was stored and the team could be refueled by themselves, and now they were compressed oxygen, nitrogen and lubricating oil.

"Then, add one hundred liters in a while. Add it when you fly back to the first time."

This is still more worry-free. How much oil is used for the test drive? If you can’t finish it, you have to take it out and wait for the next time to add it. That’s so troublesome.

When he came to the testing equipment, Long Yun learned about the work of the pilot and assistant, chatting from time to time or helping with him. During the journey, he was a regular visitor to the military airport, but compared with the busy and busy work scenes in the past, the current fighter ground crew can be said to be extremely advanced and simplified.

Take the J-7iim in front of you as an example. Before you go out, you only need to open the cover plate at the engine test end and connect the pipeline to start the test process. You can automatically conduct a complete state analysis, and then start the idling and detect the reading; then there is the entire telex control system, including the response detection of the movable parts such as the control surface and the landing gear.

Finally, check the ejection seat, the status of the anti-load and survival system is correct, and the work is done. After all, this is not a war, and there is no need to look at systems such as radar fire control, and it will not affect flight safety if it breaks.

"We're all ready, are we going to take the stage to test the plane now?"

"Well, the weather is good today, suitable for outfield activities. Thank you for your hard work, let's take a break first."

Because the fighter jets had no power at this time, the group used a tractor to drag the fighter jets to the markings of the ground for the interview.

In today's test run area, in addition to Long Yun and his two J-7i, there is also a Su-35 from the "Spark" Club, which has a green, yellow and brown camouflage paint that looks quite majestic. It seems that there are quite a number of teams purchasing this kind of heavy fighter jet recently.

"Hey, are you here to test the drive?" Seeing Long Yun and the others slowly coming to the shutdown area, the people from the "Spark" team greeted them.

"Yes! This is the one I just bought in the team? Is it really a plane ready, is it a su-35?"

"You think it's a Su-35, right? In fact, it's about the same. It's made by Chen Fei, and the domestic J-15 is the one. In fact, it's the same model. Our team will change it to be the main force now."

Standing aside with envy, Long Yun and others watched the J-15, which was gradually increasing its thrust, easily started and gradually moved away on the runway. The heat wave caused by the powerful WS-10c engine has not dissipated in the startup area for a long time, so Long Yun began to imagine when he could have such a powerful fighter jet.

By the time the J-15 had disappeared into the blue sky, the huge refueling truck had already added fuel to their J-7. A total of 200 liters of fuel was completely drizzling for this heavy fuel truck that used the sx2300 8*8 chassis. The huge capacity could even fill the internal fuel tanks of two J-11s at one time.

When the tanker truck drove out of the test area, Long Yun crawled into the cockpit to prepare for the ground interview.

In this world, this is the first time he has actually controlled the fighter's movement. Of course, he can guarantee it completely, but his mood still can't help but feel excited. After opening the main electric gate, he simply checked the instrument display, and Long Yun pressed the start button and used ground power supply to start the main engine of the fighter.

As the engine operation sounded, the automatic start program started to operate. The moment the ignition indicator light lighted up, Longyun could feel the slight body vibration.

Almost at the same time as the ignition, the oil supply system has begun to operate, the engine rotor has begun to substantially accelerate and provide the compressor with speed-up power; as the engine speed increases, the sound of booming operation is getting higher and higher. After crossing the n2 prompt line of the instrument panel, the system automatically disconnects the ground power and increases the fuel supply. For about one minute, wp-7c finally started easily and stabilizes in a slow state.

At this time, the compressor speed remained at about 5,300 revolutions per minute. Compared with theoretical parameters, this number is a bit low, but it is still normal.

To confirm that the engine was started, Long Yun first checked the brake status, then increased the accelerator and further increased the thrust, and began to accelerate the skiing on the spacious runway. The sound of the engine running smoothly continued to increase until it reached the maximum power; the thin flames sprayed from the tail of the fighter were even and bright, and Liu Wei and others on one side saw it. Now they can fully confirm that the fighter's engine is working normally.

Hearing the response from the pilot in the headset, Long Yun gradually pushed back the throttle valve, ready to enter the slow vehicle smoothly and then shut down naturally; at this time, the oil storage of the fighter was almost exhausted, and the flashing oil volume of the essence lamp had already become normal.

The other reason is that the fuel consumption of the WP-7c engine is too high: when the afterburner is not turned on, the output of the thrust of the same weight will require a kilogram of oil per kilogram of thrust for every hour. The appetite is just as good as some WS-10c with a thrust of nearly thirteen tons. It is even more amazing when the afterburner is fully opened, and the fuel consumption is basically doubled. With the J-7ii, it only has more than two tons of fuel, it can burn the oil completely in less than ten minutes.
Chapter completed!