When designing complex spacecraft systems, engineers must understand how all the subsystems interrelate. Design decisions on one subsystem will impact the design and performance of all the others. This design ripple effect is difficult to capture when each subsystem engineer develops their subsystem sequentially. Starting with a baseline design, they develop a partial solution for a subsystem, then pass data to the next subsystem engineer in line. This successive approach can take a long time to converge on a solution and is often fraught with errors due to changing requirements and inconsistent system definition. A concurrent engineering method, on the other hand, is characterized by developing concepts of all the elements simultaneously. This presentation will demonstrate how engineers at The Aerospace Corporation develop space system concepts concurrently using digitally integrated tools in the Concept Design Center.