Chapter 167: Accidental wiping the tail of the machine

Xu Qing thought that his ideas were enough to be unscrupulous, but he didn't expect that this unsightly captain would also be in the style of a wild school.

The Boeing 737 has the ability to go-around at zero altitude, but due to inertia, in general, the thrust cannot be added immediately after pressing the TOGA electric gate, and it takes a while.

During this time, the plane normally drops about fifty feet.

That is, there is a risk of touchdown when the go-around flight below 50 feet is underground.

And as long as it is well controlled, it is possible to only let the main wheel be grounded, and the front wheel is suspended.

At the moment when the main wheels touch the ground, the aircraft slams violently, and the nose landing gear may be thrown into the locked position under the action of inertia.

Of course, this is only possible, in case you get stuck to die, it's normal that you can't knock it down.

This is a theoretical possibility, and it seems to be the only way to do it right now.

After all, it's tempting to almost lock on. This little distance is simply the difference from the ground.

But it's not that this way is feasible, so it's fine.

This method must ensure that the main landing gear is grounded and the nose landing gear is suspended, and the grounding load must not be too much, otherwise the inertia is not enough to throw the nose landing gear into the locked position.

But the load is too large, in case of damage to the fuselage structure, isn't it a problem that has not been solved and another basket has been stabbed?

"Brother, are you sure?" Xu Qing couldn't help but worry.

This method of relying on the ground load and throwing the nose landing gear out by inertia has excellent requirements for maneuvering, and if it is not good, the east wall is not repaired, and the west wall collapses.

At least Xu Qing didn't have this certainty, or he dared to try it on the simulator, so forget about the real machine!

"It's still a little more certain than sticking to the face." The captain wiped his face, his hairline was covered with sweat, and it was obvious that he was under a lot of pressure.

"Do you want to get in touch with home?" Xu Qing thought about communicating with his family, otherwise, if something really happened, he couldn't let the captain alone bear the responsibility for making decisions, and as for the responsibility for manipulation, it would be another matter.

The captain thought about it for a while, Xu Qing's did make sense, and he couldn't rush it now anyway.

The co-pilot and Xu Qing monitored the plane, and the captain used a satellite phone to contact the company.

The leader on duty of the company couldn't put out the front landing gear when he heard it, and Xu Qing was also on it, as if he saw a trace of metaphysics in the dark.

At that time, the leader on duty was flying, and he listened carefully to the captain's retelling of the situation, and was also startled when he heard the captain's idea of throwing out the front wheels by using the method of zero-altitude go-around.

This method is very bold and creative, but civil aviation is not a place to be creative, what civil aviation needs is stability!

The leader on duty was also a little unable to hold it for a while, so he asked the captain to wait for a while, and he called Chen Yi overnight, after all, he still needed to ask the chief engineer about technical matters.

Poor Chen Yi slept so soundly, he was woken up by a few phone calls, and sat at the head of the bed in a daze, listening to it for half a while to know what was going on.

Regarding the captain's idea, Chen Yi said that it was acceptable.

Because the captain on duty on the other end of the phone has a relatively large grasp of the zero-altitude go-around, he can reduce the danger to a controllable range, but there is no certainty that some of the landing gear will be able to retract this fault.

Then what's so good, it's definitely a promise!

Chen Yi knew that as long as he spoke about this kind of thing, if something happened in the future, he would also be responsible.

But he doesn't care, isn't the chief teacher just for taking the blame?

After getting the family's approval of the disposal method, the captain immediately began to explain the key points of operation.

In fact, there is no point, everyone knows the procedure of the go-around, the key is how to grasp the timing of the go-around!

It was too early, probably before the main landing gear touched the pavement, and the plane got up.

It's too late, in case a grounding load of more than 2G is smashed and the structure of the fuselage is damaged, then there is no place to care.

After discussion, the captain decided to go back to 20 feet above the ground.

This altitude is based on the electronic telegraph of the radio altimeter. Xu Qing and the co-pilot listened to the electronic announcement of the radio altimeter and shouted the go-around password to prevent the captain from forgetting.

After explaining the operating procedures for the go-around, the captain made his thoughts clear to the tower.

The tower is also serving the 9831 unit. Now there are not many planes to deploy an approach interval for Xu Qing, just like this, he can't move up on the runway, his nerves have been tense, and the pressure is a little great.

Ask the captain of the 9831 if he wants fire and medical, the captain still doesn't need it.

Once the fire and medical services were notified, the battle would certainly not be. The captain still wanted to try this time, but he couldn't solve it, so he notified the ground support.

Everything was communicated, and Xu Qing and the others began to re-approach.

Xu Qing suggested that the captain use a dual-channel autonomous approach, that is, connect channel A and channel B at the same time, and then use automatic driving go-around at 20 feet, which can reduce the workload.

But the captain still trusts his hands, still using a single-channel approach, disconnecting the autopilot at more than 1,000 feet above the ground to warm up his hands.

"Blue 9831, turn left after go-around, go up to altitude 5100!"

In order to check the "results" of 9831, the tower still asked 9831 to turn left to its side.

1000 sq. ft.!

The co-pilot informs the cabin that it is about to land, and at the same time reminds them that there is a high probability of heavy landing, and pay attention to ground bounce.

500 sq. ft.!

Last time, because I knew that I wouldn't fall, I didn't pay much attention to the runway, but this time, it was a little dazzling.

The tower has adjusted the entire lighting system to the highest level, and the eyes are flashing blind.

200 feet, decisive height!

As the altitude decreases, the dazzling lights cannot be dazzling, and some of the roads cannot be seen clearly, which undoubtedly increases the difficulty of judging the altitude of the aircraft.

50 feet!

The moment the height of the electronic announcement sounded, the three people in the cockpit were all holding their breath, and the captain's fingernails were already pressed against the TOGA electric door, waiting for the twenty-foot announcement.

30 feet!

The captain's body was slightly rickety, and the left hand holding the steering wheel was loosened, and he grabbed it tightly again, and the tiger's mouth was even a little white.

20 feet!

At this moment, the co-pilot and Xu Qing shouted out the go-around at the same time!

The captain reflexively pressed TOGA, and the roar of the engine suddenly intensified!

But in a second or two, a heavy grounding followed, and Xu Qing's body even jumped.

The moment the throttle is raised, the captain begins to pull the lever. I don't know if it was due to excessive tension that caused the operation to be deformed, or whether the go-around thrust was too large and the attitude of the aircraft was too large, Xu Qing felt that he was lying down and looking at the night sky at the beginning of the climb.

The elevation angle is too big!

Suddenly, the plane's attitude suddenly froze, and there was an extremely obvious blockage

Xu Qing's face changed, this is ...... Wipe the tail of the machine!