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Why are engines placed under wings?
Placing engines on the wing provides beneficial wing bending relief in flight. The further the engines are away from the fuselage the greater the wing bending relief so engines buried in the wing root provide little relief.
How is an engine attached to a wing?
Engines are attached to a pylon The pylon is fixed into the wing structure, with a solid and very secure fitting. The pylon creates some distance between the engine and the wing. This is vital in the event of an engine fire to protect the wing (and fuel stored in it) until the engine fire is extinguished.
Why do planes have 4 engines?
To meet the power needs of an aircraft with the 747’s weight and carrying capacity, four engines were required. They were also required for long over ocean flights, to insure that the aircraft could make landfall in the event of a loss of an engine…
Why do airliners put the engines below the wings?
It seems that most airliners put the engines below the wings, i.e. the Boeing 7*7 series and the Airbus A3** series. This requires long (heavy) landing gear, and the engines are close to the ground which may cause damage to the engines (ingest debris) or the ground. Why not mount the engines above the wings?
Is it better to mount an engine below or above the wing?
Better start on that wing repair too. This includes both general access to the engine and the procedures for removing and installing the engine. An engine below the wing is fairly stable, since it is hanging from above. It naturally wants to keep hanging downwards. Mounting the engine above the wing would be less stable.
Why does an aircraft have to be overwing?
Overwing placement certainly decreases the risk of FOD but may impede passengers view and increase noise. Aircraft landing gear may have to be a certain height anyway to keep the tail clear of the runway during take-off rotation and to absorb landing forces over a longer distance.
Why did the VFW choose low engine placement?
The number was chosen because it was the 4th project to be started in 1961 by the Vereinigte Flugzeugwerke (VFW). The engine placement had several advantages: But the disadvantages (cabin noise and engine access) were the reason why this engine placement never took off. Also, low engines can get their fuel without pumps, just by gravity.