Chapter 582

The radar didn't find anything, neither at high altitude nor at low altitude. Brown's eyes looked out. The airspace was white and seemed to have nothing.

"The Pulsatilla calls the tower. The Pulsatilla calls the tower. No target is found. The other party may not be in the exercise area."

Hearing this sound, the whole tower is also strange. There is nothing on their radar screen.

After taking off, the other party flies at ultra-low altitude, which must be to avoid being detected by radar. But now, if the other party is not in the exercise area, it can almost judge its victory. You can't even find the exercise area, so your technology is too poor?

At this time, on the radar screen of the base, the route of the civil aviation airliner is gradually approaching the fighter of the Pulsatilla.

What's going on?

The Chinese air force is also suspicious. Just now, Chen Rui went up angrily. After going up, where did he hide?

Many people think that the sky is quite clear and there is radar to search for targets. It seems that it can't be hidden at all. However, for skilled pilots, like snipers, they learn to use various conditions to disguise themselves.

Like now.

Qin Guan had guessed something. His face was smiling.

General Zhang, commander of the air force, turned around and looked at Qin Guan. Qin Guan nodded calmly to him, so general Zhang guessed something.

Yes, although our equipment is not as good as people, our pilots' technology is always the best. Our pilots also have their own set.

During the confrontation exercise, the base can only judge. Now, the Pulsatilla can't find the target. Normally, it can be judged that the Pulsatilla has won, but now, they are also suspicious. If they win in this way, is it too simple?

Is it that the civil airliner is weird?

Brown was in the sky, relying on his eyesight, looking for it quickly. At this time, in the sky, the airliner was flying head-on, which was the direction of the sun. He put down his goggles and looked at the four engine airliner flying over his head.

This kind of aircraft, the common Boeing 707, is nothing special.

wait!

At this time, the flying altitude and speed of the other party are just right, so white tracks are pulled out in the sky.

In a clear sky, you can see that when a jet aircraft flies at high altitude, one or several long "white smoke" will appear behind the fuselage, commonly known as "aircraft smoke".

Of course, in addition to the actual performance, jet aircraft will not spit out smoke casually. This is a special cloud system formed by the condensation of water vapor after the exhaust gas emitted by the aircraft is mixed with the surrounding air. It is called aircraft wake in the aviation flight industry and aviation meteorology.

According to the causes, aircraft wake can be divided into exhaust wake, aerodynamic wake and convective wake. Exhaust gas wake can be divided into exhaust gas condensation wake and exhaust gas evaporation wake. The most common is the exhaust gas condensation wake,

The aircraft consumes a lot of fuel during flight. The water vapor and some heat generated are discharged out of the aircraft with the exhaust gas, enter the atmosphere, and quickly mix with the surrounding air to form a condensation wake.

Not all mixed gases will condense, which depends on the temperature, humidity and atmospheric pressure of the ambient air itself. When the aircraft wake appears, the air temperature is mostly between minus 41 ℃ and 60 ℃.

For civil aviation, it doesn't matter whether there is such a wake, but for fighters, it should be avoided as much as possible.

What if it's a combination of fighter and civil airliner?

A Boeing 707, with four engines, will have four wakes in the air. These four wakes will coincide in the backward diffusion and become a wide wake, but now, there are five wakes!

Yes, there are five wakes, which are combined together. One of them is obviously lower than four of them.

What does that mean?

Under the passenger plane, there is a small plane. Because the other side flies too close, only one target can be displayed on the radar screen!

The resolution of awg-9 radar is quite high. If a target is displayed on this radar, it means that the other party is almost flying close to the belly of the passenger plane!

Yes, that's what Chen Rui did.

Chen Rui was locked by the radar when he knew that he could not win by relying on his own small plane. He could only use the surrounding environment to hide himself. Otherwise, he could not get close to each other at all.

How?

Either it is pasted on the sea surface and integrated with the waves on the sea surface, but it may still be found by high-precision radar using Doppler effect.

So, just after he flew in, when he saw the smoke of the passenger plane in the distance, he immediately had an idea.

Get up!

At this time, his flight had left the search range of the base radar. He was tightly attached to the bottom of the passenger plane. When he flew back, the base radar could not find him.

Compared with the Boeing 707, the MiG-21 is quite small. Its tall vertical tail is almost next to the belly of the civil aircraft and flies in the sky of 10000 meters.

This requires extremely exquisite technology. The MIG 21 is hydraulically controlled. As long as you shake your hand a little, the vertical tail of the MIG 21 may cut the belly of the Boeing 707.

But Chen Rui is walking around. Although he has not flown the MiG-21, the J-7 has flown a lot. The flight quality of the two is almost the same, which requires the skills of the controller.

Now, while flying under the belly of Boeing 707, he saw the male cat fighter in the airspace below and knew that the other party was looking for himself. Now, the opportunity has come!

Chen Rui pushes the lever and takes off the Boeing 707. Bye, nanny!

The MiG-21 is small and flexible. Now Chen Rui has circled behind the male cat with the help of Boeing 707.

When MIG 21 detached from the belly of Boeing 707, the radar wave reflected by it was also displayed on the radar of the base.

In the tower, a radar operator shouted in surprise: "a target separated from the airliner is the MIG 21! God, he is hiding under the airliner!"

Suddenly, people nearby looked at the radar screen one after another. Looking at the small bright spot, it was flying behind the male cat in a rapid manner. It was like a tiger down the mountain.

"Believe our friends, we will treat the confrontation drill in the sky fairly now." Qin Guan's voice is very loud. Although Eagle language is not particularly fluent, it still makes others hear it clearly. Hey, if you want to remind the pilots in the sky at this time, it's shameless to cheat?