Lemurian
Except... an A/C crabbing, wings level (skidding). Here is a flight path not 90 degrees to Long/axis. Induced Yaw. Asymmetric airflow? yes. And not a Slip (which requires Roll input other than 0 degrees). The skid causes what that wag in the other quote forgot, there can be a crosswind in flight. If there can be a skid (crosswind), a wing can drop at Stall, and depending how robust the design of the A/C, a resultant Spin.
Last edited by airfoilmod; 19th June 2008 at 22:25.
Reason: add Roll "input"