The fighter plane followed the coastline, rose to an altitude of 6,000 meters, and flew more than 40 nautical miles south.
In fact, Wang Yu has no special destination.
The reason why he flew south was because there was no one to control his black flying there.
The Star Alliance Empire is a huge country, occupying about 70% of the territory of this continent. However, being too large has its drawbacks. There are many unregulated areas on the borders of the empire, such as the southern part of the continent. If Wang Yu was flying around in a fighter jet in the core airspace of the empire, he would definitely be shot down.
But in his current location and the vast airspace to the south, the empire's air force still doesn't bother to care.
"What's the condition of the plane?"
Wang Yu kept the fighter plane flying level and looked at the scenery outside the cockpit obsessively.
The colors of the sky above us become more vivid as the altitude increases.
Erin's three-headed body projection jumped from the console to Wang Yu's lap: "The condition of the plane is normal. Don't worry, dear, we may officially break the sound barrier today."
Yes, this is also one of the purposes of today's test flight. If the fighter plane is in good condition, it will try to break through the sound barrier and fly at supersonic speed for a period of time for testing.
The MiG-21 Bis is a second-generation semi-jet fighter that has the ability to fly at supersonic speeds for short periods of time.
"Well, we're almost there, let's get ready to speed up."
Wang Yu looked at the coordinate points displayed on the navigation map, then looked at the ground shape outside the porthole window, and determined his position.
There is no way, MiG-21, even the later Bis type, has the same avionics. Most of them are mechanical instruments, without color displays, and cannot display electronic maps like real third-generation aircraft.
Therefore, the pilot can only determine his position through the combination of coordinate points-map-observation of the terrain.
"Then come on, I will definitely protect my dear."
Erin's little figure winked playfully.
Wang Yu curled his lips, instead of expecting the machine girl's protection, it would be better to hope that there would be no accidents at all.
Adjust the flight direction and fly inland. The distance of about fifty nautical miles is enough for him to break the sound barrier.
He stabilized his flight attitude, determined the flight altitude, and then pushed the throttle lever with his left hand to the afterburner position.
The afterburner is turned on again, and a large amount of fuel is burned in a high-pressure environment, spraying flames from the nozzle, in exchange for strong power, pushing the fighter to continue to accelerate at an already high speed.
The Mach number begins to rise continuously in the blink of an eye.
From Mach 0.7 during previous cruise, it has risen to Mach 0.9.
If you look at it from an outside perspective at this time, you will find that the MiG-21 fighter is surrounded by a circle of triangular cone-shaped white mist. This is when the fighter jet tears through the air at high speed, and the shock wave compresses the surrounding air.
, the shock wave cloud generated by the condensation of water vapor, but it is enough to prove that the speed of the fighter plane at this time has reached a terrifying level.
The body shape of the MiG-21 is like a man-operated rocket. The structure itself is very compact. It has a slim delta wing swept back at a large angle, a tail fin with a large swept angle, and a slender and rounded cylindrical fuselage.
The air duct is at the nose and passes directly under the cockpit, while the engine occupies the entire rear half of the fuselage, and the rest of the fuselage is designed to reduce weight as much as possible.
When the afterburner is fully turned on, the fighter's speed can soar significantly with seven tons of afterburner thrust.
"The Mach number is continuing to rise and accelerating..."
Erin reported the status of the fighter plane.
Wang Yu heard some slight "squeaking" sounds from the fighter plane caused by the collision of metal parts, but he knew that this was a normal phenomenon, because the resistance of the sound barrier was very huge, and the fighter plane was completely using its body structure to resist. p>
Under his gaze, the speedometer needle rotated.
Finally, at a certain moment, the pointer crossed M1.0 and came to M1.1.
At this moment, the MiG-21 seemed to have broken through an invisible barrier.
After a loud explosion, the fighter jet broke through the sound barrier and entered a new realm.
Mach number one point one, supersonic flight.
This is one of the key indicators that distinguishes first-generation aircraft from second-generation aircraft, that is, whether they can fly at supersonic speeds.
Human creations fly faster than the speed of sound.
At this speed, the roar of the fighter engine can no longer catch up with the fighter itself.
Even if someone on the ground noticed the roaring figure of the MiG-21 fighter jet at this time, they would see the fighter plane first, and then hear a blast and a deafening engine sound.
"It has started to fly at supersonic speed." Erin's slightly sweet voice also reminded in time, "The body of the aircraft is in good condition, and all the values are in normal conditions. My dear, speed up, you can become the fastest in this airspace.
Man."
Wang Yu twitched the corner of his mouth.
But this time he had no time to talk to Irene. He held the throttle lever on the side tightly with his left hand, and steadily grasped the operating lever with his right hand. At this speed, the MiG-21's control performance would be greatly reduced.
, and a small deviation in the stick amount will greatly change the flight trajectory of the fighter plane.
In addition, after going supersonic, the flight resistance of the fighter aircraft will increase exponentially, and there is a risk of losing control.
Therefore, in order to stabilize the flying attitude, Wang Yu must hold the joystick tightly.
The speed is still rising, and it has reached Mach 1.4.
The maximum flight speed of the MiG-21 is Mach 2.2 without a load, but the requirements for flight altitude and body condition are extremely strict. Wang Yu has no plans to hit this speed. He plans to stop at Mach 1.5.<
/p>
After all, the fighter plane is still carrying rocket pods at this time. With external mounts, it may be dangerous to continue accelerating.
"Dear, we are currently approaching the anarchy zone at the border of the empire. It is recommended to reduce the speed."
Just as Wang Yu was staring at the speedometer, Irene's voice reminded him in time.
At this time, the fighter plane had been flying at Mach 1.5 for half a minute, so the test was almost completed.
He retracted the throttle lever with his left hand to exit the afterburner mode.
Under the action of strong air resistance, the speed of the fighter jet began to decrease rapidly.
It soon fell back to within Mach 1, which is the subsonic state.
Wang Yu glanced around and saw that he was flying above a mountainous area.
This is a mountainous area in the south of the mainland, called the Nanling Mountains. The mountains stretch for hundreds of kilometers, with an average altitude of about 1,500 meters.
To the north of the mountain is the mainland, and to the south is the sea.
Wang Yu asked Irene and found out their current location.
It is true that we cannot continue to fly forward, because if we fly further, the environment will not be very peaceful.
"We have turned around and it's time to return."
He pressed the lever sideways, and the fighter plane flipped over and began to turn.
"Speaking of it, Erin..."
Wang Yu was about to ask something about the status of the fighter planes, when he suddenly heard a beep in the cockpit.
He was suddenly stunned.
Erin also made a "huh" sound simultaneously with the sound.
Isn't this movement the sound of the radar warning system...
As a result, the sound sounded again the next second.
Then it slowly repeats at a rate of about once a second.
"There is a radar scanning us."
As a machine girl, Irene confirmed Wang Yu's guess.
She can know where the radar scans from, and she is a living radar warning system.
So she immediately said to Wang Yu, "In our seven o'clock direction, the horizontal distance is about ten kilometers, in the mountains below, well, I don't know what type of radar it is..."
She has been with Wang Yu all the time, so she has never received the professional training that Zhan Ji needs to receive. What she is doing now is just what she is born with as a machine girl. It is really difficult for her to distinguish the radar model.
Irene would not joke about this kind of thing, Wang Yu knew it very well.
So now he couldn't help but frown.
"Let's leave quickly."
Wang Yu immediately said: "Did we break into some no-fly zone? But on the open airspace map provided by the empire, there is no no-fly zone here... Forget it, no matter this is the empire's radar
No matter what other forces’ radars, they are not what we want to face now.”
After all, my current fighter plane does not have an identification device, so it would be bad if it was shot down as an enemy.
Wang Yu further pulled the lever, and the fighter jet adjusted its direction faster.
The navigation mark turned to the north, and Wang Yu piloted the fighter plane to prepare to leave the airspace quickly.
I originally thought that as long as I left, the radar would stop tracking me, but I didn't expect...
Just when he was about to leave, the warning sound that originally sounded slowly and regularly suddenly turned into a rapid and continuous sound.
"It's the fire control search radar, it's already locked on us!"
The expression of the little Erin on the console suddenly changed.
She exclaimed: "It's a missile! Ground-based anti-aircraft missiles are aiming at us!"
Wang Yu was shocked at that time. Why are there anti-aircraft missiles in a place like this?!
If it was normal to be detected by radar just now, then this scene now... is definitely not normal!
A fighter jet locked by a missile is like a person with a gun to the head. It has reached a critical moment of life and death.
Wang Yu never thought that he would be targeted by a missile when he came out to conduct a test flight of the aircraft.
This is the air defense system deployed by the imperial army in border areas?!
But according to my own information, there is no imperial army stationed here at all.
His brain was working rapidly, thinking of countermeasures.
There are no counter-weapons on our fighter planes, not to mention anti-radiation missiles specifically aimed at anti-aircraft missiles, not even ordinary bombs.
"Check the decoy bombs and turn on the override switch."
Although Wang Yu was shocked, his operation did not change and he still maintained his composure as a pilot.
Eileen immediately reported: "Twenty groups of chaff, twenty groups of heat bombs."
"Why so few?!"
"It's good to be able to find these resources in our place..."
"If I go back this time, I will make more batches."
Wang Yu once again adjusted the flight direction. Originally, the enemy missile was located behind the fighter plane. Now he would place the enemy's radar at the three o'clock direction of his fighter plane, and at the same time press the release button to throw out arrays of chaff - this is to deal with multiple attacks.
A method of Puller radar that uses chaff to form an "electromagnetic wave reflection cloud" to interfere with the radar's locking of its own aircraft.
If you are flying a fighter aircraft such as the EA-18G, you can even use electronic jamming directly.
But perhaps because the distance is too close, this level of interference is of no help.
The target radar is still firmly locked on the fighter plane driven by Wang Yu. Although it is not known who did this, there is no doubt that this is a very offensive performance.
In fighter aircraft confrontation, fire control radar locking is the second most effective method of confrontation after direct fire. This is equivalent to taking out the gun and pointing it at the enemy. Whether you pull the trigger or not is a matter of your thoughts.
At this time, we can only try to distance ourselves as much as possible...
Just when Wang Yu thought this in his heart, Irene's screams made him break into cold sweat.
"Missiles are coming! Missiles are coming! Below three o'clock! Two!"
Damn, this unknown opponent...or should I say "enemy" now, indeed launched the missile after locking on.
The cockpit visibility of the MiG-21 is very poor.
At this moment, Wang Yu had to deflect the fuselage slightly to see the trails of the two missiles rising from the ground.
The two missiles were climbing menacingly to high altitudes, like predators that smelled prey, chasing Wang Yu's fighter plane.
"Report to me the location of the missile!"
Wang Yu shouted this, and then immediately relied on his intuitive response.
He flipped the fuselage and quickly dived to lower the altitude in an S-shape.
He needs faster speed and maximum displacement in a short period of time to get rid of the two missiles locked on him.