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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.
Online Version

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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.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19920004743.
Accession ID: 92N13961.
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.
View MARC record | catkey: 15677961