RealFlight G5 Manual (21MB) - Great Planes Software Support

Washout
R/C Term
Waterfall
R/C Term
Wing Loading
R/C Term
Yaw Axis
R/C Term
An intentional twist in the wing, which causes the
wing tips to have a lower angle of attack than the
wing root. In other words, the trailing edge is
higher than the leading edge at the wing tips.
Washout helps to prevent tip stalls.
The Waterfall is a maneuver where the plane pivots
360 degrees in the pitch axis with as little forward
motion and altitude deviation as possible. As the
name suggests, this maneuver resembles a waterfall
during flight.
The amount of weight per square foot that has to
be overcome to provide lift. It is normally
expressed in ounces per square foot. This
specification can be easily calculated as follows: first
determine the area of the wing in square inches
then, simply divide by 144 to obtain square feet.
Divide the total weight (in ounces) of the airplane
by the wing area (in square feet).
This information is valuable when deciding on
which airplane to build next. Planes with high wing
loading must fly faster to stay in the air. These are
generally "performance" airplanes. Conversely, a
plane with lower wing loading does not need as
much air flowing around the wing to keep it flying.
Gliders and trainer airplanes fall into this category
because in this case, slow, efficient flight is highly
desirable.
The airplane axis controlled by the rudder. Yaw is
illustrated by hanging the airplane level by a wire
located at the center of gravity. Left or right
movement of the nose is the Yaw movement.
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