Acoustic damping materials for aerospace environmental systems encompass sound-attenuating compounds, viscoelastic sheets, constrained-layer damping (CLD) laminates, and mass-loaded barriers engineered to dissipate airborne and structure-borne noise within cabin and systems enclosures, utilising materials such as butyl rubber, bitumen composites, and thermoplastic elastomers qualified to FAR/CS 25 flammability requirements.
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