How to Find the Wing Area of a Model Airplane

Calculate the wing area of constant-chord wings by measuring the width of either wing and multiplying that by the length of both wings taken together. Constant-chord wings are rectangular wings that do not change width at any point in their length. Measure the length from the end of one wing to the end of the opposite wing, including the fuselage.

Calculate the area of tapered wings by first determining their average chord. Average chord is the width of the wing tip divided by the width of the wing at the point where the wing joins the fuselage, or plane body. Multiply this figure by the overall wing span.

Calculate the area of triangular-shaped wings, known as "delta wings," the same way you would figure the area of a triangle. Multiply the combined length of the wings by the width of the wing as measured against the fuselage. Divide the result in half to obtain the area.

Determine the area of wings with multiple tapers by dividing the wings of your model airplane into separate sections. Sections should be divided at whatever point the taper beings to change. Measure each section according to one of the formulas in Steps 1 through 3, depending on the section's shape.

Determine the wing area of multiwing aircraft by calculating the area of each set of wings and adding or multiplying them together.