It's because they are separate definitions of the crosswind and are not
additive.
--

B-58 Hustler History: http://members.cox.net/dschmidt1/
-

"James L. Freeman" wrote in message
om...
Can someone offer a non-mathematical EXPLANATION (as opposed to
DESCRIPTION) of why the speed of headwind and crosswind components of
a wind add up to more than the speed of the wind?

Thanks.