--- In Indoor_Construction_at_yahoogroups.com, Warthodson@... wrote:
>
>
> Normally a wing is mounted perpendicular to the motor stick in plan view. However, if the wing is mounted at an angle other than 90 degrees to the motor stick, for instance with the leading edge of the right side of the wing ahead of the leading edge of the left side of the wing, the plane will turn to the left. What is the aerodynamic reason for this?
> Gary Hodson
>
Skewing the wing relative to the flight path controlled by the vertical and horizontal stabs causes dihedral wing tips to act as ailerons (not rudders), rolling the model and causing the turn.
A model with a skewed flat wing (or a skewed wing with the induced wash-in/wash-out removed) will fly straight. White-wings has a model like this.
A polyhedral R/C sailplane will roll and turn with rudder only (i.e. with the rudder offset causing the wing to be skewed relative to the flight path), but a flat winged sailplane won't. Flat winged sailplanes required ailerons and elevator to roll and turn. Rudder is used to keep the nose level during the turn.
Received on Mon Nov 05 2012 - 17:29:45 CET
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:47 CET