Transporters with different shroud configurations were chosen

and aerodynamic characteristics were analyzed. Kriging surrogate model was introduced and established with aerodynamic characteristic parameters. The surrogate model with adequate analysis precision was used to replace CFD analysis in optimization process.Single-objective optimization with the minimum resistance coefficient and the maximum longitudinal pressure center coefficient of transporter and multi-objective optimization considering these two objects were implemented under the conditions of Mach number of 3

angle-of-attack of 3 degrees and flight altitude of 8km.The optimization results indicate that the conflict exists between two objects. To take account of decreasing the resistance and enhancing the longitudinal stability

multi-objective optimization is necessary and the method based on surrogate model is efficient and credible.Optimization design obtains desired configuration of transporter

where the resistance coefficient is decreased by 1.95%

and the longitudinal pressure center coefficient is increased by 5.93%.