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Name: daniel r eastabrook
Status: N/A
Age: N/A
Location: N/A
Country: N/A
Date: Around 1995


Question:
Why do some Air Planes have wings on the top of them and some have them on the sides and curved back?



Replies:
To complete the thought, I can not think of an aerodynamic reason to have the wings on top instead of the side. However, I believe it is easier to construct and airplane with the wings on top. Therefore, I believe that this type plane could be constructed at a lower cost and thus sold for a lower price.

As for the question about why the wings are curved or swept back, one reason that I can think of is related to the lift force. The lift force is provided by the differential pressure between the upper and lower wing surfaces and this pressure acts on the area of the horizontal wing surface (assuming no boundary layer separation). The other basic force that must be considered in aircraft design is the drag force which is proportional to the vertical area of the wing. With a swept wing (or a wing curved back) one could enjoy a large horizontal area with a small vertical area, thereby maximizing the lift and minimizing the drag. This is desirable since to overcome the drag, we must supply an engine. The larger the drag force, the larger the engine we will need to overcome it.

david r munoz


The choice of wing location does affect the stability of the airplane somewhat, but it is made primarily for other reasons. It is much easier to get in and out of a high-winged airplane. Wings are swept back on airplanes designed to travel near the speed of sound or above the speed of sound. The reason is that near the speed of sound a "shock wave" forms ahead of the wing. The more swept back the wing, the faster the airplane can go before the shock wave forms.

jlu


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