Chapter 157: This fighter is against the sky

There is an ancient profession called a magician, both in the East and the West. The magician is quite magical. It can perform magic and can conjure all kinds of things. In fact, this is a blind technique. It is possible to prepare the props in advance.

When doing magic, a very important way is to divert the audience's attention. For example, holding a magic wand in the right hand, driving the audience's sight, and focusing all on his right hand. At this time, the left hand can perform secretly. The operation is gone without being discovered.

Now, Qin Guan is also doing magic. There is no false real magic. It is so real that people can't believe it. If people see this, it will definitely arouse suspicion.

Qin Guan had been wandering around in the cemetery for too long, and actually forgot that there were so many people here, and now he had to use this lowest level method.

There is an earthquake!

When they heard this voice, everyone was taken aback, and then they all ran towards the door.

Is the hangar strong? Ordinarily, it should be sturdy, and it must even be able to withstand ordinary bombs. However, that is theoretical, but in reality, who dares to trust?

Life is in his own hands, of course he must run away at this time.

Just as everyone's eyes began to look at the door, when they were about to run away, no one noticed the change of this MiG-23.

A wave of spatial energy appeared in the air. This kind of fluctuation was already very familiar to Qin Guan. He looked at the size of this MiG-23, and suddenly became a size smaller. The fierce dragon fighter with two ribs air intake.

This Xiaolong fighter plane, after being washed by time and space, has once again recovered its best condition. Its vertical tail is also painted with the 03 logo, which represents the third prototype.

Now, Qin was watching other people running. If there were so many people, it would be bad if it caused crowding, and there might even be a stampede accident. Those old guys couldn't run.

"Well, everyone can turn their heads, I have brought you a new fighter." Qin Guan's voice sounded again.

New fighter? what's the situation?

Those with fast feet are about to run to the door, and those with slow feet have not started to run. They just turned their bodies. At this time, after hearing Qin Guan's words, they turned their heads back.

It's amazing. The MiG-23 has disappeared. What appeared in front of them was an aircraft that had never been seen before.

Needless to say, just looking at the integral windshield on the nose is so attractive.

The cockpit canopy is divided into two parts. The upper one can be flipped up for the pilots to enter and exit, and the front one is fixed. Now, due to technical limitations, the front of the Han fighters has three-piece windshields with two thick ones. The frame divides the front windshield into three parts.

These are all to block the line of sight.

Therefore, the more advanced aircraft of later generations simply canceled the front gear, and directly became a whole cockpit cover. Just click the button down, and the field of vision became clearer.

"This, what kind of plane is this?" someone asked immediately.

"This is the advanced aircraft I mentioned." Qin Guan said: "It uses turbofan engines and uses side strip wing technology to improve aerodynamic performance, especially maneuverability at high angles of attack. It also uses flat-panel gap radar."

With that said, Qin Guan walked to the nose, took apart the two detachable bolts, and lifted the nose radome.

Inside, a circular flat radar antenna appeared. In an instant, everyone exclaimed: "Sure enough!"

The purpose of the radar antenna is to radiate electromagnetic waves, so the early radar antenna was like a pot cover, but the efficiency of this method is very low, and as the radar power increases, the weight of the radar antenna also increases. A new problem appeared, driving the radar antenna to rotate, which was too heavy.

Therefore, someone had a clever idea and simply turned the radar antenna upside down, using two reflecting surfaces, and two reflections would go out, which saved the trouble of turning a heavy parabolic antenna. This is called an inverted Cassegrain antenna, or inverted card for short.

The technical realization of the inverted card antenna is relatively simple, high gain is easy to achieve, and the manufacturing cost is low, which is convenient for the use of a large number of equipment. The disadvantage is that due to the use of dual reflective surfaces, it takes up the volume of the nose. If you want to use it, the nose of the fighter needs to be large enough, and its weight is very heavy, and the performance is severely reduced when scanning.

Therefore, the western world has eliminated the inverted card antenna and began to use the latest flat slot antenna. As the name suggests, its radar antenna is a flat panel with suitable slots to radiate electromagnetic waves.

This flat-panel slot antenna is relatively small in weight and volume, and it is also very easy to achieve low side lobes, the performance does not decrease when scanning, and it has the potential to be upgraded to a phased array.

In later generations, Han Guo has gone through hardships. After more than 20 years of hard work, it finally mastered the production of this kind of radar. The current Xiaolong fighter, the KJL-7 multimode pulse Doppler radar stuffed in the nose, is A self-developed flat panel gap radar.

Some people from the avionics development unit came to the scene. When they saw this radar, their eyes became straight.

We must reverse imitation and get this kind of radar out!

"What kind of air intake method does it use? It's nondescript, and what's the matter with the bulge of the air intake?" The person who just asked Qin Guan asked questions again.

Didn't you say that the abdomen is inhaled? Now the abdomen is not the abdomen, the sides are not the sides, what is this way?

"This is a compromised air intake solution." Qin Guan said: "The abdominal air intake is the best, but for our existing conditions, it is not necessarily the case. In the field airport, in case the runway does not Clean, sucked into the intake duct, it will hit the engine, causing accidents, and the two sides of the air intake, but can not improve the efficiency of the high angle of attack, so use this two-rib air intake."

"As for this bulge, please comrades engaged in aerodynamics to study it. This is a way to reduce the weight of the aircraft. With this bulge, the air intake can be adjusted at different speeds, which is the most convenient and effective."

The air intake of an airplane must be adjustable. At low speeds, the air intakes are fully open to inhale enough air. At high speeds, some of the air intakes are closed to prevent excessive airflow and engine surge.

The F-16 air intake has no adjustment device, so its maximum speed is only 1.6 Mach, no matter how high it is, it can't go up, while the F-10 has an adjustment device, and it can fly to Mach 2.

Song Lao's eyes brightened. Since the beginning of his work, he has been doing research on aerodynamic layout. This kind of air intake looks very heavenly.

"Oh, my God, look at its cockpit!" At this moment, a technician who was climbing up the gangway, saw the cockpit inside and called out.