Does the fighter jet put oil before landing, why does the plane land and where to put it

The oil discharge is decided based on the capacity of the aircraft's landing gear to withstand.

Large airliners will not refuel if they fly long-haul routes. Because the oil is almost the same when you arrive at your destination.

Before the flight, large passenger aircraft will calculate the amount of fuel required, the center of gravity, and how to consume fuel according to various parameters, such as zfw, gfw, etc.

Unless there is an emergency after take-off, the excess fuel will be released and the weight of the aircraft will be enough for the landing gear to bear.

So only in the following cases, the fighter should be refueled in the air:

1. Since the maximum take-off weight of the aircraft is much greater than the maximum landing weight, if the aircraft requires immediate landing due to failure after takeoff, the landing weight at this time will exceed the maximum landing weight of the aircraft. In the event of a forced landing, there is a danger that the landing gear will break. In order to reduce the weight of the aircraft and achieve the weight to land safely, it is necessary to release fuel in the air.

2. If the aircraft requires a forced landing due to unexpected circumstances, especially when the landing gear cannot be lowered, if there is a large amount of fuel left in the aircraft, it is likely to be ignited by friction, high temperature caused by collision, and sparks during landing, and even cause the aircraft to **. In this way, it is also necessary to carry out air oil release before the forced landing.

However, after the fighter returns from the flight, the remaining fuel in the fuel tank must also be discharged and cannot be used again. It's a lot of waste.

In the past, it was heard that the Air Force used waste aviation kerosene for cooking)

Jet fuel is a type of fuel specifically designed for aircraft, with different additives than those used in automobiles, which can reduce the risk of icing and high temperatures**.

No need to drain fuel Generally, if something happens, the external ammunition or external auxiliary fuel tank is discarded to prevent an unsuccessful landing and a second landing The current landing gear is very good and is not needed.

There is this situation, because the fighter can take off with full fuel and full load, but it is more dangerous to land with a full load due to its heavy weight. Therefore, some fighter jets will drain fuel when they land with full fuel in order to reduce weight...

The reason why the plane landed and drained fuel was for landing safety. It is not necessary for the aircraft to be refueled before landing, and it will only be released in the air if it is necessary to land early or make an unexpected forced landing under certain circumstances.

When the plane is about to arrive over its destination, the airport console indicates that there is no blockage on the ground and that the landing can be scheduled at any time. The aircraft can reduce the flight altitude and choose to discharge fuel in the air in an area above 3,000 meters and sparsely populated on the ground. The released fuel is atomized at the wing outlets in advance, creating a mist in the air like water vapor.

The air movement at high altitudes will blow away these oil mist to form oil gas, which will be encapsulated or diluted by water vapor and will have a minimal impact on the environment.

The plane landed to release fuel safely and was placed on the ground outside.

In order to prevent the weight of the aircraft from being too high before landing, there is a hidden danger when the fuselage lands, so it will sprinkle oil before landing, which is for two words: safety. The large size of the aircraft, especially when flying long distances, often carries dozens of tons or even hundreds of tons of fuel, accounting for as much as 20-50 of the take-off weight of the aircraft.

The airplane is one of the most significant inventions of the early 20th century, recognized as invented by the American Wright brothers. According to its use, it can be divided into two categories: military aircraft and civil aircraft. The invention of the airplane has profoundly changed and affected people's lives, and has increasingly become an indispensable means of transportation for modern civilization.

Airplanes

An airplane is a heavier-than-air aircraft that flies through the atmosphere with a power plant with one or more engines that generates forward thrust or pull, and lift is generated by the fixed wings of the fuselage.

In a real wing that generates lift, the airflow always converges at the trailing edge, otherwise there would be a point at which the airflow velocity is infinity at the trailing edge of the wing. This condition is known as the Kuta condition, and only when this condition is met can the wing generate lift. In an ideal gas or at the beginning of the wing's movement, this condition is not satisfied, and a viscous boundary layer is not formed.

Usually the airfoil is longer than the lower airfoil, at the beginning in the absence of circulation, the upper and lower surface airflow velocity is the same, resulting in the lower airflow to the trailing edge when the upper airflow has not reached the trailing edge, the rear station is located at a point above the airfoil, the lower airflow must bypass the sharp trailing edge and merge with the upper airflow.

No. Generally, the aircraft needs to be refueled because there is a problem shortly after take-off and it needs to land immediately, when the weight exceeds the maximum landing weight of the aircraft safety certification, so it needs to be refueled. During normal flight, the weight of the aircraft is less than the maximum landing weight due to the normal consumption of fuel before landing at the destination airport, so there is no need to drain fuel.

On the other hand, if you need to drain oil before landing every time, it will cause great pollution and waste.

Why do planes have to be "refueled" before landing? The pilot told the truth, adding too much!

The emergency diversion of the aircraft is generally due to the failure of the aircraft and other reasons, such as the landing gear can not be put down, etc., in this way, the excess fuel is emptied, then the aircraft in case of an accident when landing, the possibility of **** will be minimized.

There is also a situation that the plane has just taken off, it has to land due to a failure, if the fuel load of the aircraft is too much, it will cause the weight of the aircraft to be too heavy, exceeding the maximum landing weight of the aircraft, for the sake of safety, it is necessary to release some fuel to reduce the weight of the aircraft, so as to avoid accidents due to the excessive weight of the aircraft when the plane lands.

Airplanes have this design, a must. Landing is a high-risk operation, especially when carrying ** and a large amount of fuel, it is tantamount to hitting the ground with a large number of flammable and explosive materials, so in order to reduce the risk, some fuel will generally be released, reduce the weight, and reduce the risk of landing.

Because the weight of the fuselage of the aircraft must meet the take-off and landing standards.

Aircraft need to carry sufficient fuel for the expected flight and a certain amount of spare fuel when taking off, and the weight is often tens of tons. When the plane arrived at its destination as planned, the fuel consumption was almost the same as expected before takeoff.

At this time, the weight of the fuselage of the aircraft meets the take-off and landing standards. However, if the aircraft needs to land shortly after takeoff, the fuel carried by the aircraft is not consumed, and the weight of the fuselage exceeds the landing weight specified in the regulations. In this case, the aircraft has to release fuel in the air in order to land safely.

It should be a forced landing to ask for fuel consumption, bai because:

There are two reasons, one is to prevent accidents during landing, and the other is the weight of the aircraft.

Each aircraft type has a designed maximum take-off weight and a maximum landing weight, if the weight of the aircraft plus the weight of all the people, cargo, and fuel on board exceeds the maximum take-off weight, the aircraft will not be able to fly; Similarly, if the weight of the aircraft at the time of landing, plus the weight of the fuel that has been left over by the people and cargo on it, exceeds the maximum landing weight, there is a danger when landing, such as the landing gear and the fuselage cannot bear such a large force that the aircraft may disintegrate.

Aircraft in general, and long-range aircraft in particular, are loaded with so much fuel that once the aircraft is in the air, it must fly for at least a few hours to consume the weight of the oil to bring the total weight of the aircraft below the safe landing weight.

All will only be forced to land in the event of an extreme emergency, when the weight of the aircraft exceeds the maximum landing weight.

Do not run out of fuel, because sometimes the airport is busy, there will be a situation where the plane is occupied, if it is occupied, the plane must be re-flown again, which is to need a lot of fuel to land around the airport

Don't run out of fuel, just say that before each flight, you must analyze the weather conditions of the day and the people or goods on the plane, as well as the distance of the flight, and calculate the most economical amount of refueling by the dispatch department, so as to maximize the airline's benefits under the premise of ensuring safety, and there will be residual fuel every time you land.

It does not run out of fuel, but a certain amount of fuel must be consumed, otherwise the maximum landing weight will be exceeded.

Why do some planes put some fuel in the air when they land? After reading the knowledge.

Why do planes dump fuel before landing? It turns out that the reason is this.