The wing spar carries the load into the fuselage. The airfoil shape of the wing produces lift which is a force measured in pounds(lbs). This force acts over the surface area of the wing. The structure of the wing with its ribs and skin transfers this load to the wing spar, which transfers it to the fuselage. The spar is like the backbone of the wing.
The wing spar. The spar is the main structure of the wing that supports the load of the entire airplane. All the loads go through the wing into the wing spar and down to the center of it, which is called the "wing box". (You could call this the most important part,)An airplane may fly without its engines. It might be able to fly without its flight controls. But it can not fly if the wing spar breaks.
You can reduce wing flutter by decreasing the spar weight.
Spar
This is called a "strut" or "spar".
Alex Grzedzielski has written: 'Theory of multi-spar and multi-rib wing structures' 'Theory of multi-spar and multi-rib wing structures'
For which aircraft? Every aircraft is different.
The wing spar on this aircraft is one solid assembly tip to wing tip so it is an integral part of the fuselage. This aircraft is not the usual kingair wingbolt bathtub fitting holding the wing on.
There is a main spar (lengthwise beam) and a front spar (leading edge) a number of ribs that run front to back of the wing and give the wing surface its shape and usually a spar nearing the training edge of the wing. The wing also has panels that move to bank the aircraft ....... on a small plane just one on each wing but on a high speed aircraft, often two .... one for low speed and one for high speed use. There are additional panels at the rear of each wing called flaps to change the airflow over the wing and thus lift and stalling speed. On some aircraft there are additional panels at the front of the wing that do the same when extended for low speed flight. Finally, there are often lift spoilers on the top of the wing which "spoil" lift when they are raised up ..... they also can act as speed brakes. The wing also holds fuel tanks and all of the necessary control lines to run all this stuff.
madherchood
flight
Most of the exterior skin would be made of aluminium. Also, the aluminum skin is riveted to the structure that includes frame, ribs, stringers and wing spar. These are also made of aluminum in most airplanes. Sometimes the wing spar will include a steel beam. More modern designs use composite structures and rely less on aluminum.
It is a spar. Though it is usually called a health spar, to differentiate it from a spar in the rigging on a ship, or a spar town (the spar town of Bath, England is one example).