Design optimization of transonic airfoils
- Author:
- Grossman, B.
- Published:
- JAN 1, 1991.
- Physical Description:
- 1 electronic document
- Additional Creators:
- Haftka, R. T. and Joh, C.-Y.
- Access Online:
- hdl.handle.net
- Restrictions on Access:
- Unclassified, Unlimited, Publicly available.
- Summary:
- Numerical optimization procedures were considered for the design of airfoils in transonic flow based on the transonic small disturbance (TSD) and Euler equations. A sequential approximation optimization technique was implemented with an accurate approximation of the wave drag based on the Nixon's coordinate straining approach. A modification of the Euler surface boundary conditions was implemented in order to efficiently compute design sensitivities without remeshing the grid. Two effective design procedures producing converged designs in approximately 10 global iterations were developed: interchanging the role of the objective function and constraint and the direct lift maximization with move limits which were fixed absolute values of the design variables.
- Collection:
- NASA Technical Reports Server (NTRS) Collection.
- Note:
- Document ID: 19920004743., Accession ID: 92N13961., and Pennsylvania State Univ., Third International Conference on Inverse Design Concepts and Optimization in Engineering Sciences (ICIDES-3); p 445-456.
- Terms of Use and Reproduction:
- No Copyright.
- Access Online:
- hdl.handle.net
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