FaA Quiz - Wing Design

Which is better for lateral stability (stability in roll)?

• High wing aircraft

• Low wing aircraft

The aspect ratio is always equal to the wingspan divided by the chord length.

• True

• False

Compared with a higher aspect ratio, a low aspect ratio wing (with the same area) will:

• Increase induced drag and reduce stability.

• Reduce induced drag and reduce stability.

• Increase induced drag and increase stability.

• Reduce induced drag and increase stability.

A rectangular wing has a taper ratio of 0.

• True

• False

Aircraft stability can be increased by:

• Increasing the wing AR, having a low wing, or introducing anhedral.

• Decreasing the wing AR, having a low wing, or introducing dihedral.

• Decreasing the wing AR, having a high wing, or introducing dihedral.

• Increasing the wing AR, having a high wing, or introducing dihedral.

Dihedral wings tend to be found on high wing aircraft.

• True

• False

Supercritical airfoils have:

• A sharp leading edge, a flat upper surface, and a highly cambered trailing edge.

• A rounded leading edge, a rounded upper surface, and a highly cambered trailing edge.

• A rounded leading edge, a flat upper surface, and a highly cambered trailing edge.

• A rounded leading edge, a flat upper surface, and a non-cambered trailing edge.

If an aerodynamic stall is to occur, it is safer that it occurs:

• At the wing tip first.

• Simultaneously along the entire span. 

• At the wing root first.

Compared with a lower aspect ratio, a high aspect ratio wing (with the same area) will increase the aircraft range.

• True

• False

Reducing the taper ratio of an aircraft wing from 0.8 to 0.4 will:

• increase induced drag

• reduce induced drag

• have no effect on induced drag