The aerodynamic characteristic results of the optimized airfoil S1223_OPT2 meet the design requirements. The paper is having a hierarchical multi-objective optimization on the basis of the high-lift airfoil S1223 by combing direct search optimization algorithm EXTREM and airfoil flow field solver XFOIL to automatically and quick calculate aerodynamic performance function of airfoil by computer. Wortmann FX 63-137 and Selig S1223 are high lift low Reynolds Number Airfoils which have widespread applications in heavy lift cargo planes and student projects like FSAE. Initially designed as an airfoil for air working conditions. In this paper comparative analysis has been done on S1223, S819, S8037 and S1223 RTL airfoils at low- mach number. Max Cl (Coefficient of lift) is supposed to be 2.3 at angle of attack 15. The problem is the lift curve (Coefficient of lift vs angle of attack) is way off from Experimental curve).
So the optimized airfoil presented here is propsed as the selected airfoil reference for the high-efficiency propeller of low dynamic vehicles in stratosphere.ĪB - For the design of a high-performance propeller for low-dynamic aircraft in Near Space, it is very important to have low-Reynolds-number airfoils which are supposed to have high liftdrag ratio at cruising attack angle along with a good property of stall characteristics. This commitment is achieved by selecting the S1223 foil 35, which belongs to the high lift low Reynolds profiles class (see Fig. airfoil can produce useful lift at zero angle of attack, that is why non-symmetrical airfoil has been used for the analysis in this paper. Currently, I am doing a CFD validation cases on 2D airfoil at low Reynolds number (Range 50,000 to 200,000). To model a NACA 4412airfoil and S1223 airfoils. OBJECTIVE The purpose of this study was to conduct computational fluid dynamics analysis of NACA 4412 and S1223 airfoils with below mentioned objectives. The paper is having a hierarchical multi-objective optimization on the basis of the high-lift airfoil S1223 by combing direct search optimization algorithm EXTREM and airfoil flow field solver XFOIL to automatically and quick calculate aerodynamic performance function of airfoil by computer. S1223 is an airfoil used in heavy lift cargo planes 2. N2 - For the design of a high-performance propeller for low-dynamic aircraft in Near Space, it is very important to have low-Reynolds-number airfoils which are supposed to have high liftdrag ratio at cruising attack angle along with a good property of stall characteristics. T1 - Multi-objective optimization design of lowreynolds- number airfoils S1223
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