This paper proposes a practical approach for the robust optimization method using a combination of Design of Experiments (DOE), Response Surface Methodology (RSM) and Monte Carlo Simulation (MCS). This simple practical robust design method can overcome the difficulty of the reliability calculation in terms of procedure and calculation time when compared to previous related other approach. This method was applied to the development of a new heat pipe product for the spacecraft panel, and the

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... nsion parameters of new heat pipe could be optimized with considering the total mass and the thermal robustness toward the uncontrollable variables. Consequently, the robust optimization could be performed through large numbers of direct sampling simulation by using a meta mathematical approximation equation model within a short time, and the efficiency of our practical optimization method was proved.