A duct includes a rigid air-permeable tube of composite material. The duct also includes a layer of insulation coupled to an exterior surface of the rigid air-permeable tube. The duct further includes a non-rigid insulation layer in contact with the layer of insulation. The non-rigid insulation layer forms an air-impermeable duct wall.
Sound absorbing duct for environmental control system
2025-02-11
Patent
Electronic Resource
English
SOUND ABSORBING DUCT WITH FOAM-FILLED HONEYCOMB CORE FOR ENVIRONMENTAL CONTROL SYSTEM
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