Eagle Sauce: What? Rabbit wants to rebuild Guanghan Palace!

The so-called stall state is that the slower the fighter flies, the more the aircraft needs a greater angle of attack to gain lift equal to the weight of the aircraft itself.

And as the flight speed decreases further, this angle of attack will reach a stall critical angle of attack.

To put it simply, during flight you let the speed of the plane drop until the wings stop flying, which is called stalling.

At this point, the wings will not have enough airflow to generate lift, and the aircraft will stop flying.

After the failure of the aircraft's twin engines, it is extremely dangerous to restart the engine to pull the aircraft up.

This experiment not only tested the experience and skills of 10 people in flying the aircraft.

It's more about testing the fighter's ability to be super-maneuverable.

"Report that the driver is ready to stall. "

"After five seconds it will go into a stall state. "

After hearing the prompt, everyone raised their heads and raised their hearts to their throats.

A few seconds later.

Everyone saw that the nose of the Demichim fighter in the air began to slow down and rise.

When the angle of attack of the fuselage reaches 15 degrees, the minimum level flight speed of the aircraft is also decreasing.

And when the elevation angle of the fighter reaches a level of 100 degrees.

The test instrument underneath, connected to the stall detection and alarm device, begins to warn.

"Report, the fourth-and-a-half-generation fighter has reached a state of stall, and the maximum elevation angle level has reached 120 degrees!".

"At present, the fuselage is stable, there is no large-scale jitter, and the stall detector alarm device is functioning normally. "

Hearing this, Zhao Jinsong and the rest of the senior generals of the Fengtian Military Region Air Force also looked nervous.

Not only them, but even Liang Guodong and Li Haocheng, who knew the technical data of this four-and-a-half-generation fighter, also had their hearts beating faster.

Due to the over-stall flight, the flight is in a high angle of attack flight state.

Usually an angle of attack above 70 degrees can become a large angle of attack.

And now the maximum elevation angle of this fighter has reached 120 degrees, which greatly exceeds the conventional safe flight envelope.

At this time, the air separation flow around the fighter plane is very complicated.

The aerodynamic force presents strong nonlinear, unsteady and asymmetrical characteristics, and it is easy to enter a dangerous or uncontrolled flight state such as tailspin, and the risk is very high.

If the maneuverability of the fighter is insufficient, the fighter pilot will only have the option of emergency landing, which is almost a crash and death.

At present, in the entire observation field, only Sun Zhiyuan, the developer of the fourth-and-a-half-generation fighter, is still in a completely calm state.

After all, the fourth-and-a-half-generation fighter was researched and transformed by him himself.

Since it can be called a fourth-and-a-half-generation fighter, its super-maneuverability must be very strong.

Sun Zhiyuan has enough confidence in this fighter.

As long as the pilots of the fighter do not make mistakes, the stall test is as simple as playing.

"Report, the airflow around the fighter is extremely disordered, the airflow is extremely asymmetrical, and it is very likely to get out of control!"

Hearing this, everyone's faces changed suddenly.

Now the strong air flow around the fighter is an invisible killer, and the slightest mistake will completely throw the fighter off balance.

When the time comes, it will be difficult to control it again.

The only thing that can be counted on at the moment is that the maneuverability of the fighter itself is strong enough.

Able to stabilize the fuselage in such a chaotic airflow.

At this time, the fourth-generation and a half fighters in mid-air, because the nose of the aircraft was tilted to 120 degrees, caused the entire fighter to form a brief level flight state with the tail in front and the nose behind.

At this moment, the tester shouted in surprise.

"Report, it was detected that the engines of the fourth-and-a-half-generation fighters have been restarted!".

"All the aerodynamic surfaces of the aircraft have not stalled, and the whole process is controllable!".

When they heard this, their hearts rejoiced.

Subsequently, everyone saw that the fourth-generation fighter that was originally vertical in the air, after the engine regained kinetic energy, the nose of the aircraft fell quickly and quickly returned to the initial flight state.

Immediately after, in a roar, the fourth-and-a-half-generation fighters flew quickly forward.

The whole process may seem like a long time, but it only takes a few seconds.

Looking at the flight path in the sky, just like a cobra.

Zhao Jinsong below and a group of senior generals of the Fengtian Theater Air Force were all staring wide-eyed.

"This ...... This turned out to be a cobra maneuver!".

"And it's so silky and casual!".

The Cobra maneuver is a well-known overstall maneuver.

It is the action of the fighter body under certain conditions to erect the fuselage like a cobra and then return to the center.

This action has the ability to point quickly, especially in close air combat, and can be used not only as a tactical means of attack, but also as a tactical means of effective defense.

This is a very difficult move.

At present, there are not many fighters that can make such difficult maneuvers.

At least, this action cannot be done with the existing Sword 8 second-generation fighter of the Dragon Kingdom.

And although they heard that the Sword-10 third-generation fighter that is preparing to be installed in the Air Force can also make similar actions.

But it is mainly because its thrust-to-weight ratio is not low, and there are canard wings, and it is natural that the low speed performance at a large angle of attack is good.

But even this requires the superior control skills of the fighter pilot.

But it is impossible to make such a perfect and silky maneuver as a game-like maneuver.

Only a fourth-generation fighter with an advanced vector engine, such as the F-22 of the Free Country, can do so casually.

But it didn't drift as smartly in the air as this fourth-and-a-half-generation fighter just now.

This fully reflects the excellent super-maneuverability of this fourth-generation and a half-generation fighter!

"It's too strong, the maneuverability of this fighter is simply too powerful!".

Zhao Jinsong muttered with surprise on his face.

"Report, stall flight passed the test. "

"Prepare for the next test, a low-altitude dive. "

The tester looked at the display and reported various parameters.

......

In the next hour or so, this fourth-generation and a half-generation fighter completed several extremely dangerous tests in the air.

The second phase of qualitative flight test projects was successfully completed.

Look at the four-and-a-half-generation fighters that have brilliantly completed the second stage of test flight tests.

Zhao Jinsong and all the senior generals of the Fengtian Theater Air Force all burst out with dazzling brilliance in their eyes.

Through the test just now, they have intuitively understood how powerful this fighter is.

This completely killed the Sword-10 third-generation aircraft that was preparing to be installed in the Air Force.

Even the F-22 fourth-generation fighter of the Free Country, in a one-on-one situation, is definitely not the opponent of this fighter!

Strong!

It's just too powerful!

At this time, Zhao Jinsong and others only had this one thought left in their hearts.

......