渦格子法に基づく3次元メンブレンセールの空力特性解析

概要

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This paper presents a numerical method based upon the Vortex Lattice Method for analyzing areo-dynamic characteristics of three dimensional membrane sails. The numerical method has been constructed with two principal algorithms, that is, the aero-dynamic analisis algorithm of the Vortex Lattice Method and the sail deformation calculating algorithm of the Finite Element Method (the shallow shell linear theory). A series of numerical calculations are executed for rigid wings (rectangular wing, delta wing, circular arc wing and tapered wing) and a three domensional membrane triangular sail by using the numerical method. In order to investigate the estimating accuracy of aerodynamic characteristics, the numerical results of rigid wings are compared with calculated results and experimental results by literatures, and then the usefulness of the numerical method is discussed for a three domensional membrane triangular sail in any conditions.
1994-03-29