Abstract
This paper describes the implementation of acoustic modeling for design purposes by incrementally increasing model fidelity and validating the accuracy of the model while predicting the noise of sources under various conditions. An International Space Station (ISS) US Lab mockup and an Orion Crew Module (CM) acoustic mockup were used for modeling validation. The latest configuration of the CM acoustic mockup and corresponding model include a ventilation system mockup and an ECLSS (Environmental Control and Life Support System) wall, associated closeout panels, and the gaps between ECLSS wall and mockup wall. The effects of sealing the gaps and applying sound absorptive treatment to the ECLSS wall were thoroughly modeled and validated.
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