Every aviation competition begins with the fighter taking off as a timing.

As the fighters of the two sides took off one after another, the radar monitoring system of the training center quickly captured the azimuth and speed information of the participating fighters, and established a flight safety monitoring chain. When the two groups of fighters reached the edge of the battle airspace in opposite directions, they began to formally enter the competition to engage the enemy.

After taking off, maintaining the standard two-plane formation, Long Yun and Liu Wei approached the battle airspace directly.

During the climb of the fighter plane, he saw that there was not a trace of clouds in the clear sky, and the visibility was quite high, Long Yun felt that today's weather was quite favorable, and his confidence increased a little.

Don't underestimate the impact of the weather on air combat, for old models like the J-7IIM, which have poor radar performance and can even be ignored, sometimes it is more reliable to rely on the pilot's naked eye to find the target; Not to mention that with Long Yun's extraordinary eyesight, he can barely find traces of large fighters at a distance of 15 kilometers, and such a long detection distance is almost the same as the head-on detection ability of the "Seven Masters" radar.

The radius of the circular competition airspace of the aviation competition is set at 50 kilometers, and the opponent cannot and will not get out of the circle no matter how he flies, which is a favorable condition for an aircraft with poor battlefield perception and detection capabilities such as the J-7.

In order to maintain good mobility, Long Yun and Liu Wei both carried only two PL-5Bs, although this kind of missile was China's air defense weapon in the 80s of the last century, but to be honest, the performance was really not very good: not only can only tail chase the attack target, but the effective range is often only a few thousand meters.

What is the capability of this missile, Long Yun has already felt very clearly in the previous training flights, and it is true that the expectations cannot be too high.

- But so what?

The performance of the missile is not powerful, and it is a big deal to rush up and use the aerial artillery; If you're just worried about the performance of your weapons, you might as well abstain and go home.

Maintaining a dense two-plane formation, Long Yun commanded Liu Wei to follow his movements closely, and after climbing to a height of 6,000 meters, he was quite extravagant and turned on the afterburner appropriately to speed up, regardless of fuel consumption.

The reason for this is that the engine thrust of the J-7IIM is insufficient, even if the body is small and light, the acceleration ability is not good; If you do not maintain a high-speed engagement posture, once the opponent suddenly seizes the opportunity and carries out missile raid operations, the next fight will be very passive.

Not only that, Long Yun's arrangement, but also the consideration of defending against PL-12 missiles.

According to the radar performance gap between the J-7IIM and the J-10A, Long Yun knew that they would inevitably be discovered by the opponent first, and it was conceivable that they would be attacked by the PL-12 intensively; The PL-12 is an active radar-guided missile, unlike a semi-active radar-guided missile, which requires continuous irradiation from the carrier aircraft's radar - this means that the opponent's attack is more concealed and difficult to guard against.

In the clear sky, the gray-blue J-7 twin planes flew rapidly; The radar alarm did not respond for the time being, and Long Yun and the others did not know that they had appeared on the radar display screen of the twin planes of the "Tianhe" team.

"The height is six thousand one, and the distance is sixty-five!"

After taking off, he used the fast scanning mode to explore the front and quickly caught the traces of the opponent, and the wingman of the "Tianhe" twin planes, Lei Qiang, was an impatient and immediately shouted on the radio.

Hearing the shouting of the wingman on the radio, Zhou Xiaodong was not in a hurry, but just responded with a calm "En". However, as a wingman, Lei Qiang obviously couldn't hold it back, and when he saw that the track on the radar screen was stable and it was clear that it was a target that he didn't know anything about their irradiation, his hand had already been put on the interception button of the radar, and he felt that now was the right time to launch an over-the-horizon attack:

"Let's fire, Brother Dong!"

didn't reply to him, Zhou Xiaodong just shook his head in the cockpit.

- Why is this breathless guy in a hurry?

He is still familiar with the J-7 fighter of the "Chenlong", and the radar performance of this type of model is worrying, which means that there is no one, even if they get closer, they will not be able to find themselves.

So why rush to fire and then bet on your opponent to come up and give away points? This is the case until the opponent is placed in the inescapable zone of the PL-12 and another missile salvo is launched; Then, as long as you provide medium-range guidance for a period of time, you can directly win and return home, isn't it easier?

Didn't hear the response of the long plane, Lei Qiang knew that his old partner was not allowed to allow his attack request, although he felt a little depressed, he still remained silent and followed the long plane to turn on the afterburner to speed up, quickly meet the enemy and prepare for a missile salvo.

The confrontation between supersonic fighters, time passes very quickly.

In the blink of an eye, seeing that the opponent's dense twin aircraft had approached a distance of less than 40 kilometers, using the PL-12 to attack the target approaching head-on with Mach 1.2 at this distance condition can be said to be nine out of ten: confirming the calculation prompt of the fire control system, Zhou Xiaodong decisively issued an attack order: "Lock on the target and fire two salvos!" ”

Seeing the opponent who was still directly close on the radar and whose speed had actually increased to Mach 12, Zhou Xiaodong was a little confused by the small distance between their two fighters.

These two guys, with such a dense formation, want to deceive the detection of the radar of the "Raptor" fighter?

It's a pity that in front of the JL-10A radar, which has a fairly good target resolution, no matter how close it is, it is inevitable that there will be nothing to hide. At this time, the fire control system had completed the calculation and prompted that it was ready to be launched, and he immediately pressed the button, and then he felt the body tremble slightly, and the two PL-12 missiles came out of the slide almost at the same time, dragging the bright tail flame and flying away.

With the help of the perception advantage of radar, the "Tianhe" twin planes took the lead and launched the first wave of over-the-horizon attacks!

However, at this time, the "Chenlong" twin machines are not ignorant of this.

In the silent flight just now, when he heard the faint sound of the radar alarm, Long Yun realized that the opponent's storage was and that they were likely to have been detected by the J-10A's radar.

Not only that, judging by his combat experience, since the "Tianhe" twin planes know that their J-7 does not have over-the-horizon combat capability, they will definitely choose to strike first and use active radar-guided missiles such as PL-12 to carry out at least one batch of surprise attacks at a distance of several tens of kilometers.

The combat capabilities of the PL-12, Long Yun is very clear; The maneuverability of this missile in the middle is quite powerful, and if he rushes directly with Liu Wei like this, I am afraid that it will be more than lucky.

With such considerations, Long Yun carefully distinguished the sound of the radar alarm, and at the same time maintained a dense flight posture with Liu Wei; The two gray-blue J-7s accelerated in the sky like shuttles, and became a little high and low as the chime sounded, and the sensitive intuition reminded Long Yun that the opponent had launched a missile!

――How do you hear that?

Distinguishing radar warning signals can also be regarded as the pilot's unique combat experience.

Because the seeker of the active radar-guided missile is equipped with its own radar, an electromagnetic signal will be emitted after the radar is turned on, and this signal can be received by the radar alarm of the fighter aircraft (of course, the alarm itself also needs to be preset and tuned, otherwise it may not be able to give the correct alarm).

If it is targeted by multiple homing heads at the same time, the alarm will also sound high and low.

So right now, hearing the "Didi" sound of the radar warning system, Long Yun immediately realized that the "Tianhe" twin aircraft had launched the PL-12, and now it was quite close to them, and the self-guidance head had been turned on!

As far as Long Yun remembers, the start-up distance of this homing head is generally about 20 kilometers, but because their J-7 radar scattering cross-sectional area is still relatively small, even if the PL-12's seeker has been turned on and started to search for targets, they may not be able to find their presence immediately.

Missiles are approaching, what to do?

According to the previous arrangement, Long Yun reminded Liu Wei to pay attention to the rhythm of controlling the enemy, and then issued an order to maneuver; I saw Liu Wei's movements in the cockpit, and saw that he began to turn sideways with a large slope, and changed to a sideways flight away from him.

On the radar display screen of the "Tianhe" long plane, the radar echo signals that had originally gathered together suddenly had a clear separation, and one of the targets with higher intensity suddenly changed to move laterally, and then disappeared from the radar screen for a short time!

What kind of tactic is this, to play maneuvers against airborne radars?

Zhou Xiaodong shook his head incomprehensibly, he thought that the "Chenlong" fighter was carrying out a standard side-turn maneuver against the pulsed Doppler radar: that is, the target aircraft flew sideways with the center of the circle, so that the radar of the target aircraft would lose the target. But he launched an active radar-guided missile, so could such a maneuver be useful?

It's like if someone lets a dog bite you, and you go and blindfold that person, won't you be bitten by a dog?

- You should be blindfolded!

The pilot of this "Chenlong" team is simply inexplicable!

Of course, Zhou Xiaodong's idea was right, but he didn't know that the shape of the sky had changed at this time.

The J-7 piloted by Liu Wei did enter the side turn just now, but the center of the flight circle was not the "Tianhe" twin aircraft opposite, but the approximate location of the PL-12 missile provided to him by Long Yun by estimating.

The reason why such a maneuver tactic is adopted is because the seeker of the PL-12 is also a pulse Doppler radar, and Liu Wei's current maneuver mode can be said to have a high probability of escaping the surveillance of the missile; As expected, judging from the sharp howling of the radar alarm, Long Yun knew that the missiles flying over on the opposite side directly ignored Liu Wei, who had entered the sideways maneuver and the Doppler frequency shift was quite weak, and stared at himself who was still sprinting forward.

Haha, then come on!