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http://dx.doi.org/10.5139/JKSAS.2005.33.5.018

Aerodynamic Design Optimization of Airfoils for WIG Craft Using Response Surface Method  

Kim, Yang-Joon (울산대학교 수송시스템공학부)
Joh, Chang-Yeol (울산대학교 수송시스템공학부)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.33, no.5, 2005 , pp. 18-27 More about this Journal
Abstract
Airfoils with improved longitudinal static stability were designed for a WIG craft through aerodynamic design optimization. The response surface method is coupled with NURBS-based shape functions and Navier-Stokes flow analysis. The procedure runs in the network-distributed design framework of commercial-code based automated design capability to enhance computational efficiency and robustness.Lift maximization design maintaining similar static margin to a DHMTU airfoil successfully produced a new airfoil shape characterized by pronounced front-loading and the well-known reflexed aft-camber line. Another airfoil design of lower variation in pitching moment during take-off showed weakened front-loaded characteristics and hence decreased lift slightly. Investigations using the present design methodology on an existing optimization result based on potential flow analysis and NACA-type geometry generation demonstrated significance of carrying various geometry generations and more realistic flow analysis with optimization.
Keywords
WIG; RSM; DHMTU; Irodov's Criterion; NURBS;
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