Aerojet Rocketdyne, Inc. will develop, validate, and integrate a systems model for a rotating detonation combustor into an overall systems model of a power plant and define the path to configurations that exceed 65 percent combined-cycle efficiency. The RDE system presents an opportunity for potential performance improvement because of the similarity of the detonation process to constant volume combustion. This program will begin by developing and validating a system simulation tool for integration into a power plant systems model. Results will be implemented into the power plant systems model to define the path to configurations that exceed 65 percent combined cycle efficiency.