Perpendicular blade vortex interaction

K S Wittmer, W J Devenport, M C Rife and S A L Glegg, AIAA Journal, vol. 33, no. 9, pp. 1667-1674, 1995.

Effects of Perpendicular Blade Vortex Interaction. Parts 1 and 2

K S Wittmer, W J Devenport and S A L Glegg, AIAA Journal, vol. 37, no. 7, pp. 805-817, July 1999.