Why are wings mounted sometimes on top of the fuselage instead of the bottom?

Why are wings mounted sometimes on top of the fuselage instead of the bottom?

When the wing of an aircraft is located above the fuselage, the aircraft is generally considered more stable. High-wings increase stability in roll. It does not significantly affect stability in pitch and yaw; for those appropriate tail design is needed.

Why do military cargo planes have wings on top?

Placing the wings on top of the fuselage allows the bottom of the fuselage to be closer to the ground. This is less of a problem for airlines. Commercial cargo can usually count on ground equipment for loading and unloading cargo containers on aircraft.

What is the purpose of the fuselage on an airplane?

fuselage, central portion of the body of an airplane, designed to accommodate the crew, passengers, and cargo. It varies greatly in design and size according to the function of the aircraft.

What is the purpose of pod mounted engines?

Almost all modern large jet airplanes use engines in pods located a significant distance from the wing root for substantial wing bending relief. The pods are in front of the wing to help avoid flutter of the wing which, in turn, allows a much lighter wing structure.

How are airplane wings attached to the fuselage?

The wings are attached to the main fuselage body using a lug. The bending moment and shear loads from wing to the fuselage structure is transferred through the lug structure. The attachment is done by series of pinned lug between wing side of wing box and fuselage.

What is bending in aviation?

Bending is a combination of tension and compression. For example, when bending a piece of tubing, the upper portion stretches (tension) and the lower portion crushes together (compression). The wing spars of an aircraft in flight are subject to bending stresses. Torsional stresses result from a twisting force.

Why are some planes high wing?

High-wing airplanes give pilots and passengers a better view of the ground below the aircraft. This is especially true of 4-seat and larger planes, where there is less a chance of a wing blocking your view. Low-wing airplanes allow for a better view above the plane thanks to the wings being below the fuselage.

Are low wing planes faster?

The lower drag profile of the low wing aircraft yields greater cruise performance relative to the high wing design; the result is higher true airspeeds and or lower cruise fuel burns.

Does fuselage include wings?

The fuselage is the large outer shell that encompasses an airplane’s main body. On the sides of the fuselage are the wings, whereas the front contains the cockpit and the rear contains the tail. Combined with the landing gear, these are the basic components of a typical airplane.

What are the three positions of wings on the fuselage?

The wing may be mounted at various positions relative to the fuselage:

• Low wing: mounted near or below the bottom of the fuselage.
• Mid wing: mounted approximately halfway up the fuselage.
• Shoulder wing: mounted on the upper part or “shoulder” of the fuselage, slightly below the top of the fuselage.

Why do aircraft have wings on top of the fuselage?

They need to be able to load large objects and vehicles, and with little or no ground support available. This means that the fuselage should be as close to the ground as possible to allow roll-on/roll-off of cargo with built-in ramps. Placing the wings on top of the fuselage allows the bottom of the fuselage to be closer to the ground.

Why are high-wing planes so difficult to maintain?

Since airliners don’t need easy access to the fuselage to load cargo, maintenance should be as simple as possible. Especialy with the larger aircraft like the C-5, a high-wing puts the engines and wings far above the ground. This makes it much more difficult to work on these components.

What are the advantages of a winged aircraft?

Wings further off the ground will mean that the engines will also be further off the ground, reducing the risk of foreign object damage. You can move vehicles under the wing, and taxi across smaller taxiways. The fuselage can be closer to ground, facilitating transport.

What forces act on airplane wings when they are on the ground?

When on the ground, the only two forces acting on the wings are the weights of the wing itself and that of the fuel in it. In cases where the engine is attached to the wing — which are often — the weight of the engine also acts on the wing when it is on the ground.