Tang Zhonglin's face was pale, he never expected that the J-9 would be able to fly out unharmed in an obvious stall state, and what he didn't expect was that listening to Lu Jiadong's words, the stall just now was actually a flying action, and there was even an extremely obscure name, called tail rush;

This made Tang Zhonglin speechless, because he didn't even know what the tail rush was, let alone what the principle of this air maneuver was, how it was completed, what conditions were needed, and even the name was the first time he heard of it, even if he was already a senior expert in the domestic aviation industry, he still didn't know what the tail rush was all about, so how could he answer?

It is precisely because of this that Lu Jiadong's sentence "Tail Chong, it's so simple" is like a steel needle, straight into Tang Zhonglin's heart, and more like a slap in the face, beating his old face to the snap, at this moment, he is like the emperor in "new clothes" who was torn by a child, naked! naked standing in front of the public, allowing others to see everything around him.

But will he just admit defeat like this? Obviously not, even if the emperor's new clothes are seen through, even if his whole body is uncovered, so what? The emperor is the emperor, and authority is still authority, not something that can be changed by a piece of clothing and a few glances, so Tang Zhonglin's old face turned sideways, and he resolutely turned on the black belly shameless mode, and smiled coldly:

"Tail rush? Hmph, I think it should be called a fluke rush, but I'm also glad for you, at least flying out in a stall state, proving that your plane is indeed improving, but it is still some distance from maturity!"

Seeing that Tang Zhonglin's face was not red and his heart was not beating and he was holding the posture of an elder, Lu Jiadong couldn't help but secretly praise, this old guy's face is really thick to a certain extent, and he is really constantly slashed with knives and guns, but if it weren't for this, how could he be holding American technology all day long to pick and choose fat and thin on his own things? If he had a little face, how could he be so resolute? Thinking about this, Lu Jiadong shook his head slightly, and just as he was about to say something, he heard the excited voice of the tower commander coming from the open space interlocutor next to him:

"Experiment 2, how did you do it? Rushing out of the stall so quickly seems to be simpler and more effective than my method!"

"If you want to know, when you have the opportunity, you will know if you fly the J-9 in person!"

"What's going on? Wasn't it a stall?"

"No, it's a maneuver we just summed up, called tail rush, which means that the plane is pulled up at a speed of 800 kilometers per hour at an altitude of 150 to 200 meters at a low altitude, with an elevation attitude angle of about 80 degrees, or even greater, the engine is in a slow train, and the speed of the flight climbs 3,000 meters to zero, and then it falls. Subsequently, the aircraft was afterburner, and the nose pressure was changed to maneuver. By the way, the radar at the base should be Doppler, right?"

"That's right!"

"That's right, didn't you just say that you can't see the trace of the plane on the radar? This tail maneuver can make the plane move at an extremely slow speed in a few seconds, so that it can intercept the tracking of the Doppler radar, which is known for capturing fast-moving targets!"

The so-called Doppler system can also be called the Doppler effect, that is, when the wave source and the observer have relative motion, the frequency of the wave received by the observer is different from the frequency sent by the wave source, this phenomenon is called the Doppler effect, and it is an excellent means to detect high-speed moving targets when applied to radar.

It is precisely because of this that combat aircraft is the best detection target of this kind of radar, so the vast majority of air defense radars and airborne radars in the world today use the Doppler system, and the tail impulse just completed by the J-9 is to use the principle of the Doppler effect to give full play to its aerodynamic advantages and maneuverability, and to do the opposite.

Using the short pause of a few seconds brought about by the stall to turn the high-speed movement into a relative stationary, in this way, the effectiveness of the Doppler system radar will be greatly reduced, not to mention only a few seconds, but in the fleeting air battle, this short few seconds will become the key to turning the tide of the war.

The commander of the base tower is an ace pilot with tens of thousands of hours, how can he not see the tactical practicability of this unconventional maneuver, and in the process of command just now, the moment he saw the J-9 on the radar screen for an hour, he was even more impressed by this set of "tail maneuver" flight maneuvers, and could not help but praise without hesitation:

"Awesome, awesome, you disappeared from the radar screen just now, I thought it was an accident, but I didn't expect it to be an unconventional maneuver with great tactical value, haha Very good, very good, you can teach me when you have time!"

"No problem"

A question and answer in the open-ground interlocutor, resounding unobstructed in the observation site, making the scene extremely quiet, you must know that there are not a few people who think the same as Tang Zhonglin, even if they are not as annoyed and frustrated as Tang Zhonglin, but they also feel that the J-9 is just a blessing just now, or the pilot's flying skills are superb, all in all, the J-9 is the lucky one who is favored by the goddess of luck,

But I didn't expect that the thrilling stall just now turned out to be a well-choreographed maneuvering flight action, not only that, but this set of actions also has a very practical role in actual combat, and what is even more incredible is that the Doppler radar of the tower actually confirmed the tactical value of this set of maneuvering maneuvers with empirical evidence.

Hearing these words, the experts on the scene couldn't believe their ears, it was obviously a stall and a go-around, but it turned into a tactical action of great practical significance, how could this be? However, the question and answer in the air-ground interlocutor were like a slap in the heart of the most sensitive nerve.

You must know that the dialogue between the pilot and the tower is the most real word, and there is no room for falsehood, because this is a kind of responsibility, a summary of experience, and even a means of saving life, so usually the dialogue between the air and the ground will be recorded and archived, and because of this, the dialogue between the air and the ground is often real and credible, not to mention the pilot who is dancing on the tip of the knife, it is impossible to joke with his own life and cover up lies for others.

It is based on this that the dialogue between the open space just now will be even more shocking, even a group of senior aviation experts almost shocked their jaws, Tang Zhonglin is even more so, if you say to Lu Jiadong, you can still give up the old face, and refer to the deer as a horse with a conscience,

But at the moment, the real open space dialogue was tantamount to two punches on his old face, even if Tang Zhonglin's face was thick and shameless, he was a little blindfolded by these two big slaps, let alone talking, even the shriveled old mouth couldn't close, and his cloudy eyes were staring straight at the J Bang 9 flying up and down in the sky, and he didn't know how long it took before he murmured sadly:

"How is it possible, it is obviously a stall, how can it be a super-conventional maneuvering action, impossible, impossible, even if the J-9 has a good aerodynamic appearance, it is impossible to have such good maneuverability, three months, Wanshan Aviation will definitely not be able to solve it, even if it is a god descending to earth, it is absolutely impossible"

The more Tang Zhonglin spoke, the louder he became, so that even the people around him cast strange glances like him, perhaps his words moved the heavens, or maybe the J-9 still did not get the favor of the goddess of luck, just when Tang Zhonglin's words did not fall, the rapidly climbing J-9 suddenly froze in the sky again,

Just when people were holding their breath and preparing to see the tail rush maneuver again, the J-9 did not fall as rapidly as before, but leaned back as a whole, flipped, and then fell like a falling leaf, with the tail as the axis, and rapidly rotated and fell under the action of the earth's gravity.

You must know that this weird spiral is not a beautiful curve, but an authentic death vortex, once the plane enters, it is irretrievable, you can only watch the fighter plane that once galloped in the blue sky, was pulled to the ground by gravity, turned into a piece of dust, after all, no matter what plane, no matter how high you fly, no matter how far, you can't get rid of the effect of gravity.

Because of this, seeing the J-9 turn at 360 degrees, people know that its fate is no other way than to make close contact with the earth, and the commander of the tower obviously knows this, while ordering the ground rescue personnel to prepare, on the other hand, decisively instructing the pilots of the J-9 to abandon the plane and parachute if necessary!

Tang Zhonglin also saw this terrifying scene, but unlike the horror of others, his whole person was happy, although his face was full of regret and uneasiness like everyone else, but he still couldn't hide it, the joy from the bottom of his heart was just too obvious in this kind of public occasion, otherwise Tang Zhonglin would definitely be like a chicken blood at this time, jumping into the sky and celebrating loudly, but even if it was restrained, it could not calm the excitement in his heart, so that he could use a meaningful word to express his mood at this time:

"It's over, it's over, this J-9 is really over"

The same words, in the hearts of others, silently muttered, at this moment, the rescue team on the ground has been deployed in place, and the commander of the tower ordered eagerly in an unquestionable tone:

"Experiment No. 2, abandon the machine, abandon the machine immediately!"

"The show has just begun, why abandon the plane?"

"Can you escape the gravitational pull of the Earth?"

"Why not?"

J-9 replied a little playful, but it was extremely firm, and at this moment, I saw the J-9 nose slightly down, the tail nozzle flashed red, obliquely to the next dive, and then quickly pulled up, a roll in the air, and then restored the balance, the whole action was concise and fast, in one go, whether it was the commander of the tower, or the experts who observed, they were all stupid, they didn't expect that in this case, the J-9 could still fly out

"Amazing, it's amazing, the maneuver to get rid of the earth's gravity is simply an eye-opener!" The excited call of the tower commander resounded throughout the test flight base, and he couldn't calm down for a long time (to be continued. )