Joining Sichuan Airlines starts with rescuing the captain of a powerful country

Chapter 45 Discharge of aviation kerosene
  Many people mistake wake clouds or track clouds for aircraft releasing fuel in the air.

of course not.

After aviation kerosene is fully burned in the engine, a large amount of water and carbon dioxide will be emitted.

When water and carbon dioxide are discharged, under a stable atmospheric environment and a specific temperature, the discharged water immediately turns into clouds in the sky.

These are wake clouds and track clouds.

Well known.

Clouds are just water floating in the sky.

If an airplane releases fuel in the air, the aviation kerosene will atomize quickly.

It is impossible to condense into clouds.

It is then diluted by the atmosphere.

It will not affect low altitudes and the ground.

and.

There are strict requirements for draining fuel from aircraft.

Draining fuel can only be done in the designated fuel dumping area, and there are also requirements for the altitude of the aircraft.

Then.

Why do airplanes, especially commercial airliners, drain fuel? !

Take the Airbus A330 aircraft as an example.

The maximum take-off weight of the Airbus A330 passenger aircraft is 242 tons and the maximum landing weight is 187 tons.

The difference is 55 tons.

If the plane takes off at full weight, it may encounter an unexpected situation shortly after takeoff, such as a sudden illness of a passenger, aircraft mechanical failure, etc.

At this time, the plane must return or make an emergency landing at the nearest airport.

Then if conditions permit, the captain will consider reducing the total weight of the aircraft by draining fuel so that the actual landing weight of the aircraft is lower than the maximum landing weight of the aircraft type.

But this situation is very rare.

For example, passengers need to undergo strict physical examinations before boarding, and passengers with serious underlying diseases are not allowed to fly.

As for the aircraft's mechanical failure? !
  Airport ground staff will troubleshoot the aircraft before it takes off.

After all, if a mechanical failure occurs during flight, someone may die.

Therefore, mechanical failures rarely occur.

About 90% of domestic civil aviation pilots will not encounter special emergency situations in their careers.

Even if it does happen, the oil draining procedure may not be carried out.

Therefore, as a passenger, the probability of encountering oil leakage on a plane is very low. It is estimated that you will never see a plane with oil leakage in your lifetime.

not to mention.

Not every civil aviation aircraft has a fuel drain system.

Because the oil drain system is an optional system.

In other words, of the same model, some aircraft are equipped with oil drain systems, but some aircraft are not equipped with oil drain systems.

This is the aircraft manufacturer (Party A) who decides whether to install the oil drain system according to the requirements of the airline (Party B).

In general.

More than half of the heavy-duty dual-aisle long-distance mainline passenger aircraft will choose to install an oil drain system.

Medium-sized single-aisle short- and medium-haul passenger aircraft rarely have the option of installing an oil drain system.

As for regional airliners——

What is an oil drain system?

It stands to reason.

The Airbus A319 passenger plane that Lu Qingzhou and the others were driving was a single-aisle short- and medium-haul mainline passenger plane, and it was almost impossible to install an oil drain system.

But because Sichuan Airlines purchased this passenger plane more than 30 years ago.

At that time.

Sichuan Airlines was established not long ago.

Rich and wealthy.

Therefore, the first and second batch of purchased civil aviation aircraft were installed with oil drain systems.

Today is just in time.

"Contact Chengdu and tell them that we need to release about 7000 pounds (more than 3 tons) of aviation kerosene, and we need them to designate an oil discharge area for us." Lu Qingzhou said loudly.

Liang Dong had completely stabilized his mind at this time. If you act flustered again, will you be looked down upon by this kid? !
  This kid, Lu Qingzhou, is three or four years younger than me.

My own talents are not as good as others.

认！
  But if you can't even compare to others in terms of courage.

That really makes no sense.

"Rongcheng, call 8874, please answer when you receive it."

Liang Dong's voice rang out in the Rongcheng District Regulation and Control Hall.

Hearing Liang Dong's voice, Lu Hongzhi immediately held the intercom and shouted loudly, "Rongcheng received it, you speak."

Although the Magic City police have found the owner of the alarm phone, this incident is most likely an oolong incident to create a false alarm and create panic.

But until the plane landed for a minute, no one dared to pat their chests and guarantee the absolute safety of flight 3u8874.

"The remaining fuel of our aircraft contains more than 7000 pounds. We need to release almost 8874 pounds of aviation kerosene immediately. Please designate a fuel drain area for us immediately, ."

"Sichuan Airlines 8874, the airspace near Chengdu has been cleared. You can dump fuel at any time."

"Sichuan Airlines 8874 has been received. The airspace near Chengdu has been cleared and fuel can be discharged at any time." Liang Dong repeated Lu Hongzhi's instructions.

As soon as he finished speaking, Lu Qingzhou had already started to perform the oil draining procedure.

The aircraft fuel draining procedure is not as simple as imagined.

Press the oil release button to drain the oil directly.

actually not.

Before the aircraft performs the fuel draining procedure, the pilot will enter an expected fuel drain amount on the fuel prediction page on the aircraft instrument panel, and then prepare to drain the fuel.

Immediately afterwards, the oil drain execution button will be pressed.
  The plane started to drain fuel automatically.

When the fuel discharge amount reaches the expected fuel discharge volume, the aircraft will automatically stop discharging fuel.

It takes about three to four minutes to release more than three tons of aviation kerosene.

Currently.

The price of a ton of aviation kerosene is around six to seven thousand yuan.

In other words.

Just three or four minutes.

Lu Qingzhou 'threw' ten or twenty thousand soft girl coins in the air.

But compared to the more than a hundred people on the plane, a mere 10,000 or 20,000 soft girl coins are nothing.

"what?"

Huang Jia looked at the two J-10c Raptor fighter jets outside the plane with a puzzled look on his face, "We should be almost arriving in Chengdu. Why are these two fighter jets still following us!?"

"Yes, and I feel like these two fighter jets are here to protect us." Zhou Yawen also noticed something unusual.

Qiu Yue and Yang Qi also looked puzzled.

"Don't think blindly. There are already many fighter jets in Chengdu. Maybe they will be on our way this time." Bi Nan said quickly.

Although she said this, her face was full of worry.

Been in business for so many years.

She has seen a lot of the world.

The two fighter jets were always by his side like bodyguards. This was an escort treatment that only the leader's private plane had.

Were there any big names on flight 3u8874?
  of course not.

So there must be something hidden.

Think of this.

She looked toward the cockpit uneasily.

Not only Huang Jia and the others noticed something unusual, but many passengers were also confused.

It can allow two fighter jets to escort itself like guardians on the left and right.

What an honor it is to wait for others!

"Eh?! Look, what is spraying out from the wing!?" Suddenly, a passenger pointed at the aviation kerosene discharged from the wing drain pipe and shouted.

It immediately attracted the attention of many people.

Huang Jia and the others also hurried to the window of the plane and looked outside.

When they saw that the wing drain pipe was continuously discharging aviation kerosene, their expressions suddenly changed.

(End of this chapter)