The blade root area of a tiltrotor aircraft's rotor is constrained by a great many factors, not the least of which is aerodynamic performance in cruise. For this study, Navier-Stokes CFD techniques are used to study the aerodynamic performance in cruise of a rotor design as a function of airfoil thickness along the blade and spinner shape. Reducing airfoil thickness along the entire blade will be shown to have the greatest effect followed by smaller but still significant improvements achieved by reducing the thickness of root airfoils only. Furthermore, altering the shape of the spinner will be illustrated as a tool to tune the aerodynamic performance very near the blade root.
3-D Navier-Stokes Analysis of Blade Root Aerodynamics for a Tiltrotor Aircraft In Cruise
AHS Vertical Lift Aircraft Design Confererence ; 2006 ; San Francisco, CA, United States
2006-01-06
Aufsatz (Konferenz)
Keine Angabe
Englisch
3-D Navier-Stokes Analysis of Blade Root Aerodynamics for a Tiltrotor Aircraft in Cruise
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