On Thu, 01 Jan 2004 14:58:41 GMT, "Matthew Jurotich"
wrote:

There is a co-ordination exercise called Dutch Roll. The idea is to rapidly
roll the plane from zero to +nn degress to -nn degrees without stoping at
zero then back to zero while keeping the nose fixed at a point on the
horizon. When doing this correctly are the rudder and ailerons co-ordinated
or opposite? Why?

Coordinated. The wing isn't banked enough to actually start a turn,
and your rudder is mostly correcting adverse yaw when doing things
that quickly.

I've tried it. The maneuver (which I'm told is misnamed, there's
another aerobatic maneuver which is apparantly properly called a Dutch
Roll) is coordinated. I thought it was cross-controlled until I
actually tried it.

Rob