Multi-objective Constrained Optimization using a Non-Linear Frequency Domain based Adjoint Approach

摘要

This paper presents an adjoint method for the optimum shape design of helicopter rotors subjected to unsteady conditions. The goal is to develop an algorithm which takes into account both the oscillatory pitching motion of the rotor blades, as well as the variation of the inflow Mach number. The procedure to be used can be broken down in the following three phases: first, implement the Mach number variation into the current non-linear frequency domain flow solver; second, develop a tune varying adjoint boundary condition; and finally, demonstrate the approach for the redesign of helicopter rotor blades.