Figure 5-33.  Different types of wing planforms.  aerodynamic characteristics of the wing. The first is to effect  a change in the aspect ratio. Aspect ratio is the primary factor  in determining the three dimensional characteristics of the  ordinary wing and its lift/drag ratio. An increase in aspect  ratio with constant velocity will decrease the drag, especially  at high angles of attack, improving the performance of the  wing when in a climbing attitude.  A decrease in aspect ratio will give a corresponding increase  in drag. It should be noted, however, that with an increase in  aspect ratio there is an increase in the length of span, with a  corresponding increase in the weight of the wing structure,  which means the wing must be heavier to carry the same load.  For this reason, part of the gain (due to a decrease in drag) is  lost because of the increased weight, and a compromise in  5-21  Elliptical wing Regular wing Moderate taper wing  High taper wing  Pointed tip wing  Sweepback wing 