The methods for predicting the whole aerodynamic coefficients of the hypersonic vehicle from some low cost numerical simulation were suggested. The methods utilize the information about the interference between three main components of the hypersonic vehicle; the fuselage, the main wing, and the vertical tail fin. The information about the interference was researched through the follow three steps. At first, the aerodynamic characteristics of each component were investigated individually. Secondarily, those of combined case of two components were researched. To put it concretely, the combinations of the main wing and the fuselage, and the vertical tail fin and the fuselage were investigated. Finally, the total interference analysis, where the whole three components were combined, was carried out and the effect of the interference is revealed by comparing previous two steps' results. Two prediction methods were practiced and compared. One method utilizes the result of individual component analysis, and another method utilizes that of combined case of two components. If a precise prediction of the aerodynamic coefficients is demanded, not the individual component analysis but the combined component analysis should be carried out at least.