A silly question: Where is the fuel tank on a commercial airliner?

Question

Is it in the fuesalage under the passengers??

Answer 1

ITs in the wings.

Answer 2

Most planes have a center tank and two main tanks or wing tanks (left and right)The center tank for balance is consume first supply by its two booster pumps + gravity ensure positive supply to left and right engine.

The A340 or some 747-400 have trim tanks (located at  the horiz. stabilizer) places the CG aft of the CG location. while forward transfer in flight is going on meaning trim tank fuel goes to the center tank and center tank supplies the 4 engines. the CG is moving forward to its true CG location. This computation is being done automatically by the Fuel

computer to effect a balance flight. The little fuel on the wing tip (collector tank) where the winglet is connected is still full to prevent wing fluttering in flight. Hope I did not confuse you.

Answer 3

--Wings, and fuselage under some of the passengers.

Answer 4

Mostly it's in the wings. But some aircraft also have tanks in the belly of the fuselage for extended range.

The distribution of fuel has to be kept even to keep the aircraft balanced. More fuel on board reduces the cargo lift capacity by an equal weight and the more weight on board, generally the slower and more sluggishly the aircraft flies.

Answer 5

The fuel tanks on most commercial aircraft are located in the wings in rubber bladders.  Some long distance aircraft have additional tanks located in the main fuselage jus forward of the aft compartment.  The compartment under the passengers is where all the luggage is stored.

Answer 6

On the wings and if it is not balanced a warning will go on in the cockpit letting the pilots know to transfer some fuel from one side to the other side using a valve in the middle under the wings.

Aircraft typically use three types of fuel tanks: integral, rigid removable, and bladder.

Integral tanks are areas inside the aircraft structure that have been sealed to allow fuel storage. An example of this type is the "wet wing" commonly used in larger aircraft. Since these tanks are part of the aircraft structure, they cannot be removed for service or inspection. Inspection panels must be provided to allow internal inspection, repair, and overall servicing of the tank. Most large transport aircraft use this system, storing fuel in the wings and/or tail of the airplane.

Answer 7

In the wings.

Answer 8

ok now depending on what plane it is it's all different,

if you have a 4 engined plane there would be 5 fuel tanks, there would be one for each engine but a back-up or reserve tank right under the fuesalage of the plane and this tank is the biggest.

but if you were on a 2 engined plane it would be the same 1 for each engine and 1 under the fuesalage.

if you were on a 3 engined plance like a DC-10 then it's really different. there are 1 on each wing for the 2 engines on the wing but the one under the fuesalage is for engine 3 on the tail wing.

but on a 747 it can hold up to 6 engines because you can fit 2 just on the end of the wing near the fuesalage and these 2 extra engines would get their fuel from the tank under the fuesalage.

hope this helps.

Answer 9

Aircraft typically use three types of fuel tanks: integral, rigid removable, and bladder.

Integral tanks are areas inside the aircraft structure that have been sealed to allow fuel storage. An example of this type is the "wet wing" commonly used in larger aircraft. Since these tanks are part of the aircraft structure, they cannot be removed for service or inspection. Inspection panels must be provided to allow internal inspection, repair, and overall servicing of the tank. Most large transport aircraft use this system, storing fuel in the wings and/or tail of the airplane.

Rigid removable tanks are installed in a compartment designed to accommodate the tank. They are typically of metal construction, and may be removed for inspection, replacement, or repair. The aircraft does not rely on the tank for structural integrity. These tanks are commonly found in smaller general aviation aircraft, such as the Cessna 172.

Bladder tanks are reinforced rubberized bags installed in a section of aircraft structure designed to accommodate the weight of the fuel. The bladder is rolled up and installed into the compartment through the fuel filler neck or access panel, and is secured by means of metal buttons or snaps inside the compartment. Many high-performance light aircraft and some smaller turboprops use bladder tanks.

Midsize and heavy-iron aircraft fuel system design is quite similar to that of light aircraft. But, most have electrically powered fuel boost pumps that replace the jet pumps used in smaller aircraft. (The Bombardier Challenger is one notable exception. It uses jet pumps for the primary fuel supply to the engines and boost pumps only for starting, back-up and to correct fuel imbalance.) Many models use brushless AC-powered pumps because their motors have longer service lives than DC-powered pumps with brushes. Older Gulfstream aircraft actually convert 28 volt DC power into three-phase AC at the pump to eliminate the need for brushes.

The largest models have both main and alternate primary boost pumps in each feed tank to ensure adequate fuel supply to each engine. Large aircraft may have jet pumps, powered by motive flow pressure from the main electrically powered pumps, to scavenge fuel from low points in the system and transfer it to the feed tanks. Very large aircraft, though, may use electrically powered transfer pumps throughout the fuel system because high flow fuel transfer rates are required to keep the feed tanks full.

If a fuel imbalance develops, a valve in the cross feed line between the left and right feeders is opened and the primary boost pumps on side having the lower fuel quantity are shut off. This allows both engines to be supplied from the side having the higher fuel quantity until the imbalance is corrected. Once the fuel levels are balanced, all primary boost pumps are turned on and the cross feed valve is closed.

Answer 10

In the wings on most commercial passenger aircraft. There is a complex system of pumps for fuel transfer that keep the plane balanced in flight.