How do aircraft fuel tanks pump fuel? What to add fuel to the aircraft fuel tank

I guess the fuel tank is fixed by a rotating shaft, that is to say, no matter how the plane moves (unless it falls), the fuel tank is always downward by gravity, just like a motor, I have seen a four-wheel drive motor, disassembled, the core inside is connected by a metal rod, and the bottom of the fuel tank is equipped with a heavy object, maintaining a downward gravity state.

The aircraft has a special fuel supply tank, and the fuel is transported from each fuel storage tank to the fuel supply tank in turn, and then the fuel supply pump in the fuel supply tank is delivered to the engine. If the aircraft needs to reverse the air for a long time, there must also be a special inverted fuel tank to ensure that the aircraft has uninterrupted fuel supply in various attitudes.

What about the plane's fuel tank? When the plane does various pitching actions, will the aviation kerosene on the plane flow everywhere? Today, let's take a brief look at the fuel tank of the plane.

The average aircraft usually has three fuel tanks, namely the ** fuel tank, the left main fuel tank, and the right main fuel tank. In addition, there were ventilation tanks on the sides of the wing. Some large aircraft, such as the Airbus A380, also have trim fuel tanks on the flat tail.

Airplane fuel is much higher than the fuel we use in our daily cars. Aviation kerosene used in aircraft is highly viscous, allowing water and pollutants to be suspended in the fuel and not sink to the bottom. In addition, in order to improve the explosion resistance and anti-icing properties, various additives are added to aviation fuel.

The fuel tank of the aircraft will continue to be subdivided after it is divided into three parts. For example, fuel tanks on a wing often pass through the bulkheads of multiple wings, each of which becomes a small tank, blocking each other. A small one-way flap between each compartment ensures that the fuel does not overflow.

Drain Fact Sheet.

Overview. The oil drain system can carry out pressure oil discharge for each oil tank, and can also suction and drain oil for the No. 1 and No. 2 main oil tanks.

Fuel drain systems can also be used on the ground to transfer fuel from one tank to another.

Pressure drain. The tank can be pressure-drained with the following components:

Drain flap. Cross trap door.

Drain the oil drain valve.

Objective. The drain valve is mounted on the right engine supply manifold with a drain manifold, which allows the oil to be drained from the fuel and the middle.

Introduce. Manually operated drain valve, including the following components:

Handle. Valve assembly.

Handle. The handle operates the oil drain valve, and the handle is also a position indicator. When the handle is in the open position, the grease drain valve cannot be closed to approach the door.

Valve assembly. The valve assembly is mounted on the internal structure of the fuel tank and is connected to the drain main pipe and the right engine fuel supply manifold.

Drain oil use.

Overview. There are two ways to drain the tank, pressure drain and suction drain. Pressure drain any tank. Only the No. 1 and No. 2 main tanks can be suction and drained. Fuel transfer between tanks is possible.

Only the No. 2 main oil tank is carrying out suction and draining, and the No. 1 main oil tank can be suction and draining. When the No. 2 main tank is empty, air will enter the main pipe and the fuel flow will stop.

Pressure drain. Here are the key points of the pressure drain procedure:

Move the handle on the drain valve to the open position.

Turn on the booster pump that needs to drain the tank.

If necessary, open the infusion door.

Turn off the booster pump when the tank is empty.

Move the drain valve handle to the closed position.

Suction and drain oil. The following are the key points of suction and draining:

Move the handle on the drain valve to the open position.

If necessary, open the flap.

Pumping with ground equipment began.

When the tank is empty, move the drain valve handle to the closed position.

Fuel transfer.

Move the drain valve handle to the open position.

Turn on the booster pump of the tank you want to drain.

Open the flap door.

When the fuel transfer is complete, turn off the booster pump.

Close the flap door.

Move the drain valve to the closed position.

Summary. Hello! The aircraft fuel tank is filled with jet fuel. Aviation kerosene is a liquid fuel refined from petroleum with high calorific value and stability, which can meet the long-distance flight needs of aircraft.

Hello! The aircraft fuel tank is filled with jet fuel. Aviation kerosene is a liquid fuel refined from petroleum with high calorific value and stability, which can meet the long-distance flight needs of aircraft.

The display is fuel.

Aircraft use special fuel, which can also be called aviation kerosene!

Turbocharged planes use jet fuel!

Summary. The aircraft fuel tank is filled with aviation kerosene, also known as aviation fuel, which is a special petroleum product, mainly used for fuel for aircraft engines. The composition of aviation kerosene mainly includes alkanes, olefins, aromatics, sulfides, oxides, etc., of which alkanes and olefins are the main components, the content of alkanes is generally between 50% and 70%, and the content of olefins is generally between 20% and 30%.

What to add fuel to the aircraft fuel tank

The aircraft fuel tank is filled with aviation kerosene, also known as aviation fuel, which is a special petroleum product, mainly used for fuel for aircraft engines. The composition of aviation kerosene mainly includes alkanes, olefins, aromatics, sulfides, oxides, etc., of which alkanes and olefins are the main components, the content of alkanes is generally between 50% and 70%, and the content of olefins is generally between 20% and 30%.

I've done that. There is gasoline. Diesel fuel. Kerosene. Fuel oil. Fuel is displayed.

Special jet fuel is used on the aircraft.

The best of these is fuel. Oh.

In general, the aircraft takes off with a large amount of fuel and load, and the take-off weight is much greater than the weight allowed for the aircraft to land safely. During normal flight, the fighter consumes most of the fuel.

Precautions for aircraft draining:

During the flight, although the emergency oil discharge is called "emergency", it does not mean that it can be discharged casually. Generally speaking, the city does not allow oil to be released over the airspace above the forest and near the ground at low altitudes, and the place of oil release should be selected as far as possible over the ocean, mountains or wastelands.

Airports also generally set aside a part of the oil drain area near them. In addition, the oil discharge height is guaranteed to be above 3,000 meters as much as possible, so that the released fuel will atomize and volatilize before landing, and will not pose a threat to ground facilities and personnel.

During the battle, a part of the carrying load will also be dropped and used, and the weight of the aircraft will be greatly reduced when returning to landing, meeting the requirements of safe landing weight. However, there are times when an aircraft encounters special circumstances and requires an emergency landing. At this time, in order to meet the requirements for safe landing, the pilot has to release some of the fuel and reduce the weight of the aircraft.

The plane burns aviation kerosene. Aviation kerosene is purified by naphtha, paraffin oil and other materials through multiple processes, compared with the gasoline that is steamed out in the first step, aviation kerosene is much calmer, the density is not high, the calorific value is not low, not easy to volatile, in the special combustion environment of the turbine, the combustion speed is not slower than gasoline.

Aviation kerosene has suitable density, high calorific value, good combustion performance, rapid, stable, continuous and complete combustion, and the combustion area is small, the amount of carbon deposit is small, and it is not easy to coke; It has good fluidity at low temperature, which can meet the requirements of oil fluidity in cold and low temperature areas and high-altitude flights; It has good thermal stability and antioxidant stability, which can meet the needs of supersonic high-altitude flight; High cleanliness, no mechanical impurities and moisture and other harmful substances, low sulfur content, especially thiol sulfur content, small corrosion to parts.

Introduction: Most aircraft consist of five main parts: wings, fuselage, tail, landing gear, and power plant.

As the air flows through the wing, which is shaped as a flat bottom and curves up, the upper and lower sides of the wing generate different pressures. And the lower surface pressure is high, and the upper surface pressure is small. The pressure difference creates an upward lifting force that moves the aircraft upwards.

This is the root of flight.