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Preliminary Study on Time-Spectral and Adjoint-Based Design Optimization of Helicopter Rotors
 

Summary: Preliminary Study on Time-Spectral and Adjoint-Based Design
Optimization of Helicopter Rotors
Seongim Choi
Department of Aeronautics and Astronautics
Stanford University, Stanford, CA 94305
Ki H. Lee
Aerospace Operations Modeling Branch
NASA Ames Research Center
Moffett field, CA 94035
Juan J. Alonso
Department of Aeronautics and Astronautics
Stanford University, Stanford, CA 94305
Anubhav Datta
Eloret Corporation
Moffett field, CA 94035
We propose in this paper an adjoint-based design optimization methodology that is
particularly efficient for flow simulation of helicopter rotors in combination with a Time-
Spectral (TS) method. The TS method is a fast and efficient algorithm to simulate the
unsteady periodic flows with the narrow frequency spectrum which are often encountered
in rotorcraft, turbomachinery, and fixed-wing flutter analysis. It represents the time dis-

  

Source: Alonso, Juan J. - Department of Aeronautics and Astronautics, Stanford University

 

Collections: Engineering