Positive displacement pumps are one of the many potential noise and vibration sources associated with undersea vehicles. This paper presents an approach to predict the tonals radiated from vane-type pumps mounted in undersea vehicles. The approach is based on using a numerical model of a vane pump coupled to an analytical model of the pump inlet hose and a finite element model of the hull and internal structure associated with the fluid-loaded undersea vehicle. An illustrative example is presented that demonstrates the influence of the various propagation paths and pump parameters on the overall radiated power. The basic approach can be readily extended and implemented as part of a simulation based design process for managing vehicle acoustics and vibration.
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