Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
762515 | Computers & Fluids | 2011 | 15 Pages |
This paper presents a discrete adjoint-based aerodynamic optimization algorithm for helicopter rotor blades in hover using a Non-Linear Frequency Domain approach. The procedure to be used can be broken down into two phases: first, investigate and develop an accurate inviscid numerical model for the current generation of helicopter rotor blades; and second, demonstrate the approach for the redesign of a transonic Caradonna–Tung two-bladed rotor. The results in determining the optimum aerodynamic configurations require an objective function which minimizes the inviscid torque coefficient and maintains the desired thrust level at transonic conditions.
► Validated the Non-Linear Frequency Domain method for Rotorcraft Flows. ► Developed the Discrete Adjoint Equations for the Non-Linear Frequency Domain method. ► Demonstrated aerodynamic shape optimization to improve the performance of hovering rotor blades.