To: Imlanphere
You stated above that a helicopter can be designed so that when the cyclic is moved to the left or, right the pilot can take care of the cross couple and fly forward (or at least that is what I think you said.
FAA Advisory Circular 27-1 which governs Certification Of Normal Catagory Rotorcraft states that the direction of flight must be in the same sense of cyclic stick displacement. They allow a 1-2 degree deviation for control coupling but not 90 degrees as you had indicated.
[This message has been edited by Lu Zuckerman (edited 20 December 2000).]