Fig. 3. The relation between Va and
Vg-Va where
-
=45°
expressed in vectors. Circles represent constant Vg (15 m
s-1) and a varying Vw (2,4,6 and 8 m
s-1), + symbols represent constant Vw (6 m
s-1) and varying Vg (2, 5, 8 and 11 m
s-1). All the points shown here are subsets of those in
Fig. 2B.