So the optimized airfoil presented here is propsed as the selected airfoil reference for the high-efficiency propeller of low dynamic vehicles in stratosphere. Tejnil E (1996) Computational investigation of the low speed S1223 airfoil with and without. The aerodynamic characteristic results of the optimized airfoil S1223_OPT2 meet the design requirements. NACA 0008 airfoil, Transient behavior, Incompressible flow. The airfoil S1223 was chosen over other low-Reynolds-number airfoils with known good performance at low Reynolds numbers for the constant section propeller. the wing will be negative, and more substantial for the S1223 airfoil while being the. 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. UAV, Unmanned Aerial Vehicle, Aerodynamics, Airfoil, VTOL. 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. 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. It is well known that the S1223 airfoil has better aerodynamical performance than FX63. ![]() If we work some numbers, it starts to become apparent. Two low-Reynolds high-lift UAV airfoils (S1223 and FX 63-137). 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. Obviously, the S1223 produces far more lift than any of the other airfoils, and hits its most efficient point (maximum lift for minimum drag) at a very high lift coefficient - just a shade over 1 However, this is not necessarily a good thing. T1 - Multi-objective optimization design of lowreynolds- number airfoils S1223
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