A good night's sleep.

When I wake up in the morning, the sky is beautiful.

The sky is clear and cloudless, the visibility is very good, and it is perfect for a test flight.

All test prototypes were inspected again.

No problem.

After the inspection, the test flight was officially entered.

The test pilots are ready.

The first to play was Li Tonghe himself.

According to the test flight procedure, he will take off in the first plane. The first goal is to hit the Mach 3 highway.

"Good luck!"

"Good luck!"

Li Tonghe set off.

He got into the cockpit of the No. 1 machine.

The cockpit slowly closes.

Everyone dispersed.

Engine ignition.

Glide.

Machine No. 1 slowly drove out of the hangar.

Arrive at the designated location.

The runway for the test flight is very long, longer than the runway of the average international civil airport. It's 8,000 meters.

This is also to prevent accidents.

After all, the test flight itself is full of dangers.

"Let's go to the tower. ”

"Good. ”

The group entered the tower.

There is a complete control room, which can read all kinds of data of the No. 1 machine.

At present, the speed of the 125 jet engine is less than 300 revolutions per minute. It's completely in a gliding state.

"Report! The powertrain is normal!"

"Report! The avionics system is normal!"

"Report! Emergency system is normal!"

"It can take off. ”

"Take off. ”

"Take off. ”

"Take off!"

A barrage of instructions was given.

The engine revs rise sharply.

500 rpm ......

1000 rpm ......

The tail of the fighter suddenly erupted with a large cloud of tail flames.

Hasten.

It's getting faster and faster.

The engine soon exceeded 1500 rpm.

The wings are slightly upturned.

Elevating.

The landing gear begins to lift off the ground.

The fighter jet was like a sharp arrow, quickly plunging into the sky.

Mach 0.8......

Mach 1.0 ......

Mach 1.2 ......

Speed readings are constantly soaring.

Almost in a matter of seconds, the No. 1 machine had already broken through 1 times the speed of sound.

At this time, the speed of the engine is less than 2000 rpm.

The speed continues to increase.

Mach 1.5 ......

Mach 1.8 ......

"Steady speed. ”

"Maintain the height. ”

The tower gives the command.

Machine No. 1 began to control the speed.

The main thing is to give the engine a respite.

After all, this is the first time that the engine has reached such a speed, the first time it has reached such a height.

Some problems that cannot be found in ground tests, high-altitude test benches, and factory test flights are likely to be exposed at this time.

The data is normal.

The flight attitude is normal.

The engine operating parameters are normal.

Soon after, the No. 1 machine began to jump again.

At present, the altitude is only 8,000 meters. It is also at the height of the use of civil airliners.

Keep jumping.

Keep picking up speed.

Mach 2.0 ......

Height: 10,000 meters......

Mach 2.2 ......

12,000 meters high......

"Steady speed. ”

"Raise the height to 15,000 meters. ”

The tower gave the command again.

The fighter began to stabilize its speed, and then continued to climb.

Soon, it jumped to an altitude of 15,000 meters.

"It's too fast. Yuan Zhen said.

"The thrust is too much. Zheng Jincheng nodded.

The average fighter jet, jumping from 12,000 meters to 15,000 meters, takes some time.

For most jet engines, there is a slight limit after jumping to an altitude of 12,000 meters. It's like a small-displacement car that reaches 120 km/h and accelerates sluggishly. It can take a long time to increase the speed to 150 km/h.

However, the speed of the No. 1 machine is completely unaffected.

This fully shows that there is still a lot of reserve space for the thrust of the 125.

However, the main thing to test now is speed.

Height does not need to be considered for the time being.

Level Flight.

Hasten.

The speed of the first machine is getting faster and faster.

Fortunately, it is not visible to the naked eye. Otherwise, I'm afraid that only a streamer flashed by.

"Li Tonghe, how do you feel?" asked Zheng Jincheng.

"Good. Li Tonghe's answer was clear.

"Vision?"

"Normal. ”

"Hearing?"

"Normal. ”

"Gauge?"

"Normal. ”

"The engine sounded. ”

"Normal. ”

Some subjective judgments cannot be measured by data.

For example, engine vibration, noise, asthma, etc., all need to be judged by test pilots.

In addition, there is the flight attitude, the feeling of flight, and so on, even more so.

Otherwise, test pilots are the best of the best.

A test pilot is worth more than a hundred fighters.

It's just a flying sensation that takes at least a few hundred flight hours to develop.

Like Li Tonghe, the flight time has exceeded 1,300 hours, and the experience can be said to be very rich.

Frankly speaking, whether there is a problem with the plane or not, he can basically judge by feeling.

The problem with the engine, in particular, is very obvious.

As the saying goes, there are no small things in the engine.

The engine is the heart!

Anything that has to do with the engine is a big deal.

The first thing that test pilots have to judge is actually a problem with the engine.

As it stands, the engine is running normally.

No, it can also be said to be abnormal.

The main reason is that the rotational speed is too low.

The afterburner didn't turn on at all.

It's like a 6.0T car engine with a speed of only 60 kilometers per hour.

It's completely aggrieved by such a powerful engine.

"Good. Hasten. ”

"Understood. Hasten. ”

Unit 1 continued to accelerate. The engine speed began to increase slowly.

This is limited by the avionics system.

The main thing is to prevent overload.

Mach 2.4 ......

Mach 2.5 ......

"Steady speed. ”

"Stable height. ”

The tower gives the command.

Of course, Li Tonghe strictly carried out the order.

This is a thermal barrier velocity.

The fighter jet and the air rub violently, generating heat.

Beyond this speed, the exterior of the aircraft will increase rapidly.

Sure enough, the temperature detected by the sensor, the stainless steel skin on both sides of the nose, is almost 180 degrees.

This is the temperature that has just begun.

If you continue to fly, the temperature will continue to rise.

Sure enough, half an hour later, the temperature at the main observation points was already above 220 degrees.

Obviously, this is a dangerous temperature too.

If it is an aluminum skin, it may be softened as a result.

Thankfully, it's made of stainless steel.

In the end, the skin temperature on both sides of the nose of the No. 1 machine stabilized at about 230 degrees.

Generally speaking, the weak temperature of stainless steel is above 800 degrees.

In other words, there is still a lot of room for speed.

In fact, a lot of data on the MiG-25 can be used for reference.

The MiG-25 is capable of breaking through Mach 3.2.

"Keep picking up the pace. ”

"Maintain the height. ”

The tower issued another command.

Unit 1 continued to pick up speed.

Mach 2.6 ......

Mach 2.8 ......

Mach 3.0 ......

Finally, it broke through Mach 3.

The flight speed of the No. 1 aircraft finally exceeded Mach 3.

No, exactly......

It was easily broken through Mach 3.

Li Tonghe feels that it is completely effortless.

The engines were not used to all their strength. The speed is more than Mach 3.

If it weren't for the strict discipline restrictions, he simply couldn't wait to try it, and if he pushed the engine "throttle" to the end, how fast would it be?

Will it fly so fast that it will disintegrate directly at high altitude?

The atmosphere inside the tower was very calm.

Everyone was momentarily agitated and then back to normal.

This is Huaxia's own development, the first aircraft capable of breaking through Mach 3. It's a record.

All machines will record this valuable data.

Since then, Huaxia has been the third country in the world to have Mach 3 fighters.

On the wide LCD screen, a big 3 was shattered.

Wang Buan watched from the side.

It feels like there's no passion at all. It feels like a trifle.

The main thing is that there is still a lot of spare power in the engine.

Basically, half of the abilities haven't exploded yet.

Others didn't seem surprised at all.

This was something that had been expected for a long time.

The thrust of 125 is so large, it is a double engine, and the weight of the No. 1 machine is only 18 tons, so it is normal to break through Mach 3!

Now the question is, what exactly is the ultimate speed?

Mach 4?

Mach 5?

Or even higher?

Theoretical calculations can be very high. But everything needs to be tested by practice.

"Report! The satellite orbit is normal!"

"Report! The US M1080 satellite is in orbit!"

"Report! Russian E271 satellite into orbit!"

There is a constant summary of information.

Liu Zhenhua's brows furrowed inadvertently.

It seems that the secrecy work will not be done. The test flight of the No. 1 aircraft will definitely be detected by other countries.

J-8 itself does not have the ability to be invisible.

The 125 engine also does not have the ability to stealth.

In front of other people's high-tech satellites, it's just a little kid who strips naked.

However, it doesn't matter anymore.

If you detect it, you will detect it. And that's to be expected.

All aspects are already ready. The information is true and false, false and real, in short, it makes others suspicious.

Now, it's time to flex Huaxia's muscles.

In the future, the ultimate airspeed of Mach 3 is not only possessed by the United States and Russia.

We also have it in Huaxia!

We have many more!

Sure enough, the detection satellites of various major countries quickly transmitted back information.

The first is the Pacific Command of the US Navy based in Hawaii......

Then there is the Central Command of the US Army in Qatar......

And then there are the Russian Aerospace Forces......

Countless large radars have been turned on.

Countless satellites began to adjust their orbits.

All of a sudden, countless data came one after another, causing countless undercurrents to surge.

"Is Huaxia launching missiles?"

"What the hell are they going to do? Missile tests? Intercontinental missiles?"

"Damn! Is Huaxia going to cover that damn island with missiles? so fast!"

"Damn! We have a Seawolf-class submarine in the Philippine Sea!"

"No! The target altitude hasn't changed!"

"Damn! It's a fighter!"

"Damn! It's a Mach 3 fighter!"

"Damn! This is a Huaxia fighter! Its cruise speed is Mach 3!"

"Hurry up and inform the Minister of Defense!"

"Wake him up!"

……

Update 17,000 words today, ask for a little recommendation vote!