AFOQT Practice Test

What is the primary advantage of the elliptical wing planform?

1. Increased structural strength

2. Lower induced drag

3. High maneuverability

4. Increased payload capacity

The correct answer is: Lower induced drag

The primary advantage of the elliptical wing planform is its ability to lower induced drag. This design minimizes the vortex drag generated by the wingtip vortices, which is a significant source of induced drag in aircraft. The elliptical shape allows for a more uniform lift distribution along the wingspan, leading to a reduction in the intensity of vortices at the wingtips. This results in improved aerodynamic efficiency, particularly at lower speeds or during climb and cruise phases of flight. While the other options present advantages that may be associated with different wing designs or configurations, they do not encapsulate the distinctive aerodynamic benefits afforded by an elliptical wing planform as effectively as reduced induced drag. High maneuverability, structural strength, or increased payload capacity can be found in various wing types, but the unique aerodynamic characteristic of the elliptical shape primarily focuses on optimizing lift-to-drag ratios, making it exemplary in reducing induced drag.