Aimed at the application of CFD in the conceptual design of joined-wing aircraft, a method is presented for generating the input data for the CFD software MGAERO quickly and automatically. Two key issues concerned in this paper are as follows: (1) geometric description of the joined-wing aircraft configurations with a relatively small number of parameters; (2) development of a code to generate the input file of MGAERO based on these geometric parameters. Two applicational examples demonstrate that the metho...