Question

The aspect ratio (AR) is given by __________

(a) b/s

(b) s/b

(c) b^2/s

(d) s^3/b

I got this question in an online interview.

My question comes from Pressure Coefficient in section Inviscid & Incompressible Flow of Aerodynamics

Answer 1

Correct choice is (c) b^2/s

To elaborate: Aspect ratio (AR) is the ratio of span to the mean chord. It is given by the square of wing span divided by wing area. A long and narrow wing has a high aspect ratio and vice versa. It is given by:

AR = b^2/S where b is the wing span and S is the wing area.