Jose wrote:
[re side slip vs. forward slip]
There is no difference.

It =seems= like there is a difference, only because the perspective of
what you want to accomplish is different. However, as far as the way
the airplane goes through the air is concerned, they are completely
identical. The only difference is the way you think of the airplanes
motion with respect to the ground.

The difference is that when the longitudinal axis of the airplane is not
lined up with the runway centerline (forward slip), there is much more
drag. If you're too high, a side slip doesn't help you lose excess
altitude as effectively as a forward slip. If you're doing an emergency
landing off field, landing on a short strip, or landing with a
crosswind, the difference between the two slips can be quite significant.