Recent work in Dynamic Interface simulation is described whereby a real-time free wake module was coupled to a lower-order ship airwake model. A novel physics-based computational method of representing the unsteady airwake of Navy ships is modeled using vortex doublet elements shed from sharp edges of the ship superstructure, and the approaching rotorcraft is described by a panel-based fuselage model and freely distorting wake analysis. The airwake model representation provides an appropriately detailed level of fidelity to capture handling qualities features of importance to shipboard rotary-wing aircraft operations, while maintaining high (and eventually real-time) computation throughput. This approach promises to revolutionize “dynamic interface” simulation by combining physics-based models of helicopter flight dynamics, rotorcraft free wake representations, unsteady ship airwake generation, and, optionally, ship motion dynamics. The resulting simulation environment, when eventually run in real-time, may be used to quantify operational shipboard approach envelopes without the considerable time and expense of at-sea testing.