The aspect ratio (AR) of an aircraft’s vertical stabilizer, also known as the tail fin, is defined as the ratio of its span (S) to its average chord length (c).
The formula for calculating the aspect ratio of the vertical stabilizer is as follows:
- Aspect Ratio (AR) is a dimensionless quantity; it has no SI units as it represents a ratio.Span (S) is the distance from one end of the vertical stabilizer to the other, measured in meters (m).
- Average Chord Length (c) is the average width of the vertical stabilizer from the leading edge to the trailing edge, also measured in meters (m)