When he sat in the cockpit of the J-10, Qin Feng was quite calm, flying the fighter with the engine turned off, it was not the first time for him, he had piloted the J-7 fighter back then, and returned to the base without power, what is it now?

Qin Feng toggled the switches, just as usual, the engine at the tail roared, the speed from low to high, when the sound became more and more sharp, the engine began to spray fuel, and then, a flame came out of the tail, the flame gradually stabilized, the starter was disconnected, and the engine started successfully!

It's just as easy as usual, Qin Feng is still quite satisfied with the third uncle's engine, and he also believes that he can come back calmly this time.

However, just as he was about to release the brakes, he saw a red light flashing on the display on the right side, and he was stunned.

"Report, fuel temperature exceeded." Qin Feng shouted on the radio, and then, according to the action plan, turned off the engine.

There are a lot of sensors on the plane that can detect all kinds of faults, and now, after the engine is started, there is such a failure.

If the fuel temperature exceeds the standard, then before entering the engine, the fuel may burn because the fuel temperature is too high, and the engine will spontaneously combust, in this case, of course, Qin Feng will not let it appear.

Now, Qin Feng turned off the engine, opened the cockpit cover, watched the technician holding the equipment, and began to run towards the engine behind.

If it was before, it was a big project, you had to take the entire rear fuselage apart and lift the engine out, but now you don't need to, just open the back cover, and the lower body of the engine is exposed.

It may be caused by the blockage of the oil circuit, try to change the fuel filter first!

After the replacement was completed, the lid was fastened, and the second test started again, and when Qin Feng skillfully started the engine, the fault reappeared!

Then look for the fault!

Qin Feng was in the cockpit and began to continue waiting, restarting non-stop, three times, four times, five times, this failure was like playing hide and seek with everyone, disappearing and reappearing.

Every time you start, you will consume a hundred kilograms of fuel, and now, it has been started ten times, and the aircraft consumes more than a ton of fuel, if you continue to try, it still doesn't work, then today's flight mission will have to be canceled, looking at the clear sky overhead, if you give up flying like this, it's really a pity!

Qin Feng did not have any mood fluctuations, continued to operate the fighter steadily, and finally, during the 15th test run, the engine overheating was troubleshooting.

"Qin Feng, how is it, can you still fly today?" The question of the chief engineer came from the headset, and it was tossed fifteen times on the plane to start, this is definitely an ordeal, now, does Qin Feng still have that energy?

"No problem." Qin Feng said: "001 requests to take off!" ”

"You can take off, stay safe." The words of the chief engineer came from the headphones, Qin Feng let go of the brakes, slid onto the runway, and climbed into the sky with a skillful roar.

The engine is turned off, this is a major failure, and now I want to test the flight of this project in person, everyone is sweating, but Qin Feng has no mood swings, he has experienced it more than once, there is nothing to be afraid of, besides, he has confidence in this plane!

"The altitude is ten thousand, the speed is seven hundred, and it is ready for an air launch test flight." Qin Feng flew to an altitude of tens of thousands of meters in accordance with the standard test flight process, and then, the tense test flight was finally coming.

The test begins!

Qin Feng turned off the engine, and the roar of the engine in the tail disappeared immediately, and inside the earphones, there was only a slight sizzling sound of electricity, and this silence made people feel scared.

Qin Feng didn't start the engine immediately, he was staring at the numbers on the flat display, and sure enough, the gliding ability of J-10 was even worse than that of J-7.

The aerodynamic layout of the third-generation aircraft is more advanced, but in terms of unpowered gliding, it is not as good as the latter, which is of course because of the difference in aerodynamic layout, such as the J-7 slender pole general fighter, the air resistance is very small, relying on a five-ton engine, it can achieve a flight speed of Mach 2.

In order to pursue high maneuverability, the third-generation aircraft naturally needs a more advanced aerodynamic layout, which has greater air resistance, and they rely on advanced engines to achieve these indicators.

Height nine thousand.

Height 8,000!

Seven thousand in height!

"Prepare for air start." Qin Feng shouted on the radio, and at the same time began to prepare for the start in the air, Qin Feng's hand turned on the electric door switch, forced lubrication of the engine, and then, to see if the wind could blow the engine up.

Any engine starts, the principle is almost the same, the first is to let the engine spin, which must use external mechanical force, generally with electric motors, of course, there are special, such as some use compressed air, and even some use the thrust of the explosion and so on.

The aircraft engine is on the ground, using the electric energy provided by the power supply car to drive the engine to rotate, but it is not good in the air, it needs to be blown directly with air, just like a windmill.

The wind blew into the engine, and the engine began to rotate, faster and faster, faster and faster, Qin Feng looked at the index data of various engines on the head-up display, and judged the arrival of the right time.

It's now, inject fuel, ignition!

Streams of black smoke came out of the tail of the engine, a phenomenon that only appeared on the MiG-29, and also appeared on the J-10, black smoke first came out of the jet pipe in the tail, and then gradually faded, and in the end, it became a flame.

In 30 seconds, the engine started successfully, and the performance of this engine is really outstanding!

"The air restart was successful, and now we are ready to return to the second subject for test flight." Qin Feng's mood was very stable, just like usual.

The air restart just now, the danger is not the highest, after all, this kind of engine is already mature, and the engine air restart experiment has also been done on the Su-27, so as long as the operation is correct, there should be no big problem, but the second one is the test of life and death, make a wrong step, and there is no chance to parachute!

Qin Feng's state of mind is very calm, of course he knows how dangerous it is, but he must test the flight, only after the test flight, there will be a basis, in case other comrades encounter an air parking accident in the flight in the future, there is still an experience to rely on, even if it is the Longtan tiger's den, you have to break through!

In the base, everyone came out, looking outside, looking at the sky in the distance, quietly waiting.