Changkong Fighter

Chapter 342 Engine Multimode Operation

The J-10's rigid refueling probe is housed inside the fuselage, the fuselage skin closes, and the tanker accelerates forward.

After maintaining a safe distance, Liu Jun prepared to conduct a test of the fighter jet's variable cycle engine operating in multiple modes.

The current altitude is within the normal operating range of the turbofan engine. Liu Jun slowly pushed the throttle valve, and now the J50's single engine with a thrust of about 20 tons began to produce power.

The compressor draws in a large amount of air, some of which passes through the turbofan's bypass duct, while the rest enters the combustion chamber to mix and burn with the air. After mixing with the air in the bypass duct, the mixture is expelled, generating thrust that propels the J-50 at high altitudes.

Liu Jun kept an eye on the flight instruments, constantly monitoring the fighter jet's speed. With the two engines propelling it, the J-50's speed increased rapidly, quickly reaching Mach 1.

With a loud bang, the fighter jet entered supersonic cruise and its speed continued to increase.

Mach 1.2
Mach 1.5
When the speed reached Mach 1.8, Liu Jun felt that the fighter jet's cruising speed had reached its limit, and the only way to break through the current cruising speed was to continue climbing to a higher altitude where the air was thinner.

With a slight pull on the lever, the J50 climbed towards the sky. During the climb, the speed did not decrease; on the contrary, as the altitude increased, the speed continued to rise!

Mach 2
Looking at the speedometer, the J50's speed was still increasing.

Suddenly, Liu Jun felt a slight jolt in the J50's fuselage. The internal ducts of the two aircraft engines changed their structure, and the turbofan engine switched to a turbojet engine mode that was more efficient at high altitudes.

The compressor supplies all the air to the combustion chamber, and the large amount of high-temperature gas provides thrust to the aircraft, propelling it to accelerate continuously.

Accelerating to speeds above Mach 2, Liu Jun felt that the fighter jet's speed could still increase when it reached Mach 2.4.

[Calling Chang Kong, how is the aircraft's condition?]

"The body is in good condition and testing can continue."

【clear. 】

Liu Jun continued to increase his altitude, climbing towards 30,000 meters. At this time, the EODAS system distributed throughout the aircraft detected a heat source. After magnifying it, Liu Jun found that the approaching aircraft looked very familiar.

"Ba Ye?"

This fighter jet, which is still in service with the Republic, was designed from the outset as a high-altitude, high-speed aircraft, with its two turbojet engines perfectly suited for high-altitude operation.

Seeing the "veteran" slowly catching up, Liu Jun immediately realized that the turbojet engine of this J-8 was extraordinary.

As the Eighth Master slowly approached, Liu Jun turned his head to look and saw the numbers on it. It was a set of numbers starting with 8. The paint on the fuselage was slightly damaged in some places, proving that it had been in service for a long time.

As they approached, the J-8 and J-50 flew side by side. This scene was like an old man watching over the new generation, looking with satisfaction at the development of the motherland's naval and air power.

"Chang Kong Call 811"

"This is 811. I am here to escort you throughout the flight." A slightly aged voice came through the radio, sounding as weathered as the J-8 itself.

"Changkong, received!"

The two generations of fighter jets flew side by side at an altitude of 24,000 meters. Just as an old man cannot compete with a young man in terms of physical strength, the J-8 gradually could not keep up with the J-50. The difference in the twin engines was too great.

The J-8 could only watch silently as the J-50 surpassed it, and the gap between them widened until the J-50 finally disappeared from the J-50's sight.

Watching the J50 surge ahead, the J8 continued its flight at the same speed, silently observing the J50 leaving it far behind. The J50's back was higher! Faster! Stronger! The J50's altitude continued to climb!
28000
At this altitude, Liu Jun could clearly observe the curves of the earth, and at this altitude, the thrust of the turbojet engine was also gradually decreasing.

[Chang Kong, prepare for the final test.]

"understand!"

If the previous tests were still under the control of the higher authorities, then the J-50 will now enter high-speed flight mode.

Now, the J50 has reached a speed of Mach 2.8. At different altitudes, the density of the atmosphere is different, and the speed of sound is also different.

Now, it's time for the final testing of the variable cycle engine!
Stamping mode!

As Liu Jun activated the ramjet mode, the internal structure of the engine changed again. Both the turbojet and turbofan ducts were closed, and the compressor's intake duct was also closed, leaving only an intake duct that led directly to the afterburner.

Instead of a compressor, the J50 uses shock wave compression. The shock wave generated by the Garrett intake slows down the incoming airflow before it is drawn into the combustion chamber.

【Stamping Mode - Start】

The pleasant AI voice sounded again. In ramjet mode, the flames in the combustion chamber burned brighter and brighter, and the heated air was ejected backward. The J50's speed suddenly increased, continuing to rise from the previously unchanged Mach 2.8.

Mach 3.0
Mach 3.4
Mach 3.8
Mach 4.0
Mach 4.0 is not the limit for the J50; its speed continues to increase as it speeds southward from the north of the motherland.

Because the J-50 was traveling at high speed, its skin was rubbing against the air at high speed, and the surface temperature was constantly rising. Apart from the various departments of the University of Tokyo that already knew that the J-50 was going to be tested, other radars capable of monitoring the launch of ballistic missiles immediately sounded an alarm, reminding the University of Tokyo that its "ballistic missile" had been launched!

"Sir, the aircraft has been detected accelerating at a speed of Mach 4.3 to Mach 4.8!"

"What's going on? The alien civilization didn't launch an attack, so why did they launch ballistic missiles?!"

According to the monitoring network in the Pacific Ocean, no alien spacecraft appeared from the sinkhole. The flight path of the missile launched by Dongda was also very strange. It did not fly towards the Pacific Ocean, but flew from the north of Dongda towards the south, still within the country's territory.

"Immediately inquire with the University of Tokyo: what are they doing!"

Various countries raised questions to the University of Tokyo, and shortly after, the university gave an official reply: "[A certain aircraft is undergoing testing (none of your business)."]

After issuing an official response, the University of Tokyo remained silent, while all the satellites were watching the aircraft, which was flying at a speed close to Mach 5.0. If the speed was rounded up, the flight speed was 1700 meters per second!
At this speed, the range of PL15E, PL17, and even PL21 missiles is unimaginable!
Fighter jets are crucial for enabling missiles, even when fighting alien civilizations. Missiles are constantly upgrading their guidance heads, and the current guidance heads have been upgraded to integrated guidance, with free switching between infrared and anti-radiation guidance, specifically tailored for alien civilizations!

[Chang Kong, report on the aircraft's status!]

With its three engines and similar speed, the J36 observed the J50 from below.

"The body is in good condition."

[Continue testing, pay attention to the fuel level.]

Under stable stamping conditions, the J50's fuel consumption is not high.

"clear."

(End of this chapter)