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Design Process: Planform Effects on Span Loading and Drag
...on span loading and drag. When choosing a planform, the designer must consider many factors. The goal is to come up with a wing design that provides acceptable aerodynamic performance,...
Design Process: Wing Size and Stall Speed
...should be constant regardless of density altitude. The designer cannot affect the density of the air, so the two variables available to get a desired stall speed are wing loading...
Design Process: Pitch Force Trim
...issues that must be taken into account, however, when designing a trim tab system. The first is that the tab reduces the effectiveness of the surface it is trimming. For...
Design Process: Planform Effects on Structure and Weight
...be significantly lighter than a constant-chord wing of the same span and area designed to carry the same weight airplane. This is not the whole story, however. The designer can...
Design Process: Flaps
...airplane designed to get relatively high performance on low horsepower. To get the performance they must be aerodynamically efficient, low-drag designs. This works well in up-and-away flight, but a low-drag...
Design Process: Vertical Tail Planform
...The wetted area and airfoil of the tail affect parasite drag, but the planform has little effect. This gives the designer a bit more freedom to choose the planform of...
Design Process: Tail Surfaces
...well as the tail arm. The details of the tail design, particularly of the elevator controls, can also have a large effect on the amount of stabilization the horizontal tail...
Design Process: Cantilever Wings
...designer has a choice of attach concepts: The first attaches the wing to the fuselage only at the main spar with a single attach system that carries the lift, bending...
Design Process: Roll Control
...we look at details about aileron sizing and design, let’s turn our attention to the overall roll-control requirements the airplane will have. The pilot needs to be able to control...
Design Process: V-Tails
...some special cases where it can be a good design choice. Tail Ground Clearance: Some sailplanes have V-tails to give the tail adequate clearance from the ground when the glider...