Papers Published

1. Rule, John A. and Bliss, Donald B., Prediction of turbulent trailing vortex structure for rotorcraft blade-vortex interaction, Annual Forum Proceedings - American Helicopter Society, vol. 2 (1995), pp. 1254 - 1256 .
   (last updated on 2007/04/09)

   Abstract:
   Accurate knowledge of rotorcraft tip vortex structure is essential to the prediction of rotorcraft free-wake aerodynamics and sound radiation due to blade-vortex interaction. A novel analytical method has been developed to accurately predict the turbulent structure of a fully developed trailing vortex. Properties in the trailing vortex are calculated from the load distribution on the generating blade, and satisfy a set of fundamental conservation laws. This new vortex model can be used to determine the correct flow field for examining blade-vortex interaction (BVI).

   Keywords:
   Turbomachine blades;Aerodynamics;Wakes;Vortex flow;Turbulent flow;Aerodynamic loads;Calculations;Three dimensional;