Chapter 527 Entering the Death Spiral
Swoosh~~~
This K-8V stabilizer is like a kite with a broken line.
Under the influence of the earth's gravity, it fell from a height of 10,000 meters.
Even if it is a big iron lump.
It is easy to roll or shift when falling down at such a high height.
Rather than straight up and down.
Because it will be affected by various airflows.
This is especially true for aircraft.
Because the reason why the aircraft can take off and soar above a height of 10,000 meters is the main reason why the engine provides sufficient power, a reasonable aerodynamic layout is also important.
If a reasonable aerodynamic layout is not designed, even if the engine is powerful, the aircraft will either disintegrate in the air or fall down without flying far.
This is also why this K-8V stabilizer machine needs to complete a 98-degree angle of attack first when testing large angle of attack and tail rotation.
Because if there was no such a large angle of attack.
This K-8V stabilizer is really not easy to enter the tail rotation.
That is.
The tail spin of this K-8V stabilizer is artificially manufactured.
Some time ago, Jiang Chen drove a J-11b with two engines to fly for hundreds of kilometers and successfully returned to the airport.
If there is no near-perfect aerodynamic layout design.
The iron lump of more than ten tons was probably the second after the engine was stopped in the air.
The aerodynamic layout design of the K-8V variable stabilization machine is also perfect.
If the flat-flying engine stops in the air, the aircraft is expected to be able to glide and fly at least dozens of kilometers.
However, at this time, the head of the K-8V stabilizer is facing upward.
The fuselage is at a 98-degree angle of attack with the ground.
So the next second after the engine stops.
The aircraft will fall down irresistibly.
At the same time, due to crosswind and other factors.
The aircraft originally had the nose facing up and the fuselage facing down.
But after a while, the plane began to flip in the air.
Jiang Chen only felt dazzled.
The whole person was like sitting on a high-speed electric swing chair, rotating constantly.
However, the rotation speed is much lower than that of the high-speed electric swing chair.
So his brain remained awake all the time without any impact. "Warning, stall warning~Warning, stall warning~Warning, stall warning~Warning, stall warning~"
In the cockpit.
The red warning light had already lit up on the dashboard.
The stall warning kept echoing in the cockpit.
The tail is turned.
Jiang Chen immediately took a look at the plane's altitude.
In just over ten seconds, the altitude of the plane had dropped sharply from an altitude of more than 10,000 meters to an altitude of 8,000 meters.
And because the plane stalled and entered the tail spin.
Therefore, all the data on the instrument panel in the cockpit have begun to explode.
Death Spiral.
It turns out that the reputation is well-deserved.
As long as the plane enters the tail rotation, whether intentional or unintentional, it is equivalent to stepping into the gate of hell with one foot.
Because the aircraft tail spinning not only stalls the engine, but also completely destroys the flight attitude.
It is difficult to change.
This is not just about restarting the engine.
It is even more necessary to have a nearly perfect control over the aircraft's flight attitude at that time.
That is.
If you don’t seize the opportunity, even if the aircraft engine does not have any faults, it will be difficult to restart.
And how can we seize this opportunity?
It is necessary to restart immediately the moment the plane flies.
Because the plane entered the tail spin state, it was equivalent to an invincible hot wheel falling from the sky.
In other words, the plane is rolling continuously.
If you want to find a flat-flying posture in a state of constant rolling, then you have to restart the aircraft engine.
Even if a person with rich flying experience and superb driving skills is probably difficult to achieve.
This is also why the tail spiral is also called the death spiral.
So when the plane entered the tail spin state, although Jiang Chen was not affected much, his entire breathing began to become rapid.
The expression is no longer as calm as before.
The face was tense and his eyes were wide open. Even blue veins were already popping up on his forehead.
This has nothing to do with his physical fitness.
It is caused by excessive mentality.
"Hu~~Hu~Hu~"
He gasped heavily, staring at the height meter without blinking.
Because according to the test requirements.
After the altitude of the aircraft reaches 5,000 meters, he can change it and restart the engine.
Soon.
The plane fell down for several thousand meters.
Almost blinking.
The pointer of the altimeter pointed at 5,000 meters.
No mistakes, one poem, one post, one content, one in 6, one book, one bar, one read!
Near the surface of the earth, the free fall of all objects under the action of gravity is about 9.8 meters per second.
This acceleration refers to the rate of change of the object's velocity under the action of gravity, that is, the speed of the object will increase by 9.8 meters per second.
Say it simpler.
It means that when an object falls freely, the required height of one minute is about 18,000 meters.
You can lose 18,000 meters in one minute.
So a height of only 5,000 meters.
It doesn't even take 30 seconds.
So when the altitude pointer points to 5000 meters.
Jiang Chen immediately reached out and restarted the aircraft engine.
But no matter how he operated it, the aircraft's engine remained indifferent.
Fuck!
Jiang Chen felt that his flight suit was almost wet with sweat.
It has been almost a year since I joined the army.
I have also had several fights with the Americans and Korean sticks.
But this is the only one that really makes him feel tense all over his body and his heart is in his throat.
After another restart failed.
The plane not only did not change it, but instead entered the negative tail spin.
"Negative tail rotation, operation fails."
Inside the cockpit.
The prompt sound rang again.
Jiang Chen wished he could punch the instrument panel.
Damn it.
Why is it so difficult?
But the more nervous he is, the harder it is to operate.
The plane was originally flipping in the air like an invincible Hot Wheel, but now it simply fuselage faces down and then keeps spinning in the air.
Negative tail spin.
It can be much harder than the death spiral.
Rear row.
The Qin team, who was originally alive, became a little nervous when they found that the plane had entered the negative tail spin.
He heard Jiang Chen's breathing sound getting louder and louder in his headphones.
I couldn't help but remind me, "Calm down, the more you panic you will be, the more likely you will be to get into trouble."
"Hu~Hu~Hu~"
Jiang Chen's long and long He exhaled a large mouthful of turbid air.
Then he kept reminding himself, "Calm down, calm down."
"But I can't calm down."
"You can't calm down, you must calm down."
He suddenly closed his eyes slightly.
No longer stare at the height meter.
Instead, feel it with your heart.
Then murmured, "One circle"
"Two circles"
"Three circles."
Just on the altimeter pointer Point to 2000 meters.
Jiang Chen suddenly opened his eyes.
At the same time, push the accelerator valve gear lever hard.
Rumbling~~~
This K-8V stabilizer, which has entered the death negative spiral, suddenly made a deafening roar.
(This chapter ends)