Abstract
This paper deals with the generation of a grid for a finite difference calculation of flows around an aircraft in Cartesian coordinates. The main equations governing the generation are plane and line equations in the three-dimensional field. The external form of the aircraft is shaped from a large number of small triangular planes. The grid is formed by three groups of lines perpendicularly intersecting each other. The quantitave relation between the external form of the aircraft and points of the grid is obtained by algedraic treatment of the plane and line equations. In the same manner, views of the aircraft are drawn using these equations.
