Question:
How does a wing of an aircraft hold the weight of a jet engine?
I often wonder how does a wing of an aircraft hold a jet engine so big and so heavy without breaking up or bending. The wing seems to be very thin compare to the engine. How could it hold jet engine(s) much bigger and heavier than its size?
And does the engine obstruct the aerodynamic?
Answer by Danny
for the first part the material of the wings are very strong and reinforced in that general area holding the engine, the engines are designed to be light, and what basically holds it in place are 2 pins placed perfectly so that the force is distributed evenly but once in the air the lift of the wings makes it easier to lift up
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A wing mounted engine is attached to a pylon that is attached to the wing’s main spar.
In most airplanes, the main spar is a strong metal piece that usually runs from wingtip to wing tip about halfway back from the leading edge of the wing.
The spar forms the backbone of the wing. It is designed to absorb the weight and thrust loads of the engine, and the landing gear is also attached to the main spar, which is strong enough to absorb those loads as well.
http://en.wikipedia.org/wiki/Spar_%28aviation%29
The interaction of the engine with the airflow around the wing can create serious problems, so engines are positioned on the wing using computer and wind tunnel tests to minimize their influence on the aerodynamics of the wing… Tail mounted engines solve that problem, but create others with their weight aft.
Airplane wings are constructed as a series of “ribs” lined up attached to multiple “spars” and the metal skin is placed over it and fastened on. This type of construction gives the wing a great deal of strength without much weight. The hollow-like build of the wing allows for fuel to be stored within it as well as landing gear wells, hydraulic lines, etc. and the engines can be safely mounted on. This does not mean the wings stay stiff, though, as the wings have to meet certain flex standards so they can withstand weight, lift, turbulence, and all the stresses that are thrown against it. Look for a metal wing cross section to better understand my explanation.
As for the aerodynamic affect of the engine, it does negatively affect aerodynamics with several “types” of drag. The type of drag taught first is called “form drag” and has to do with the silhouette of the plane from looking head-on. The other types of drag (such as parasitic drag and its subtypes) people dedicate their whole lives to researching and sometimes are harder to explain. Although the engine does cause drag, the thrust output greatly counters it and allows the plane to move forward with ease.
How do these skinny poles hold up traffic signals?
http://www.worldofstock.com/slides/TRC4634.jpg
It’s all in the design.