As the global space industry expands, rockets are being launched from a greater number of spaceports with a rapidly increasing cadence. Because of the growth in the number of spaceports, the cadence increase, and efforts at vehicle optimization to reduce weight and cost, noise has the potential to create harmful impacts – from vehicle vibroacoustic loading to expanded environmental footprint. This paper provides a brief overview of current Australian spaceport and launch vehicle development, which involves near-term plans for small-payload orbital launches. Bounds on overall sound power level from these rockets is described, as well as maximum overall sound pressure level using two different models. One of these models, RUMBLE, is used to show maximum predicted levels at the Great Barrier Reef. Eventual refinement and validation of these predictions will aid in assessing potential noise impacts on vehicles, structures, communities, and threatened and endangered species.

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