Before I get into (and make a video on the proper Technique of Slipping), first I want to demonstrate what it does and why we do it. Also, this exercise is for demonstration only, go out with your CFI and practice slips before you go out there and try them. Most don't ever do them outside of their PPL Training. Anyway, I am Fast, or High, or BOTH in these videos to demonstrate just how easy it is to get the Cub DOWN & SLOWED simply by Slipping. (Also, Slips are really just a lot of fun, and this is what this flying is all about. The Speed you see on the Overlays is GroundSpeed so not 100% Accurate. What is important is the SPEED TREND and the Descent rate and descent ANGLE and how they relate.

What is a Slip?

A slip is an aerodynamic state where an aircraft is moving somewhat sideways as well as forward relative to the oncoming airflow or relative wind. In other words, for a conventional aircraft, the nose will be pointing in the opposite direction to the bank of the wing(s). The aircraft is not in coordinated flight and therefore is flying inefficiently. Creates significant amount of Drag which allows us to rapidly descend without increasing airspeed.

Slips are particularly useful in performing a short field landing over an obstacle (such as trees, or power lines), or what if we lose an engine and the only option we have is right in front of us? a Slip may make the difference between getting down safely in an open field, versus ending up in trees or someplace else as equally unforgiven. Some airplanes (like a Pitts or Stearman) a Slip is the only way we can see what's in front of us.

This video is showing all FORWARD SLIPS, not "Side Slips" which are used for Cross wind landings.

Forwardslip (Thanks Wiki)

The forward slip changes the heading of the aircraft away from the down wing, while retaining the original track (flight path over the ground) of the aircraft.

To execute a forward slip, the pilot banks into the wind and applies opposing rudder (e.g., right aileron + left rudder) in order to keep moving towards the target. If you were the target you would see the plane's nose off to one side, a wing off to the other side and tilted down toward you.

A forwardslip is useful when a pilot has set up for a landing approach with excessive height or must descend steeply beyond a tree line to touchdown near the runway threshold. Assuming that the plane is properly lined up for the runway, the forward slip will allow the aircraft track to be maintained while steepening the descent without adding excessive airspeed. Since the heading is not aligned with the runway, forwardslip must be removed before touchdown to avoid excessive side loading on the landing gear, and if a cross wind is present an appropriate sideslip may be necessary at touchdown .

VERY IMPORTANT

Some airplanes, (not the J3), You can not Slip with Full Flaps, so ALWAYS refer to your POH.