The Data Driven Design Optimization Methodology (DDDOM) is a Dynamic Data Driven Application System (DDDAS)developed for engineering design optimization. The DDDOM synergizes experiment and simulation in a concurrent integrated software system to achieve better designs in a shorter time. The data obtained from experiment and simulation dynamically guide and redirect the design optimization process in real or near-real time, and therefore realize the full potential of the Dynamic Data Driven Applications Systems concept. This paper describes the DDDOM software system developed using the Perl and Perl/Tk programming languages. The paper also presents the
first results of the application of the DDDOM to the multi-objective design optimization of a submerged subsonic inlet at zero angle of attack and sideslip.