Abstract: A noise reducing blanket for use in an aircraft cabin for reducing acoustic noise transmission from an aircraft airframe to a cabin interior. The blanket includes a mass barrier portion, a foam portion having at least one cavity formed in it, and a vapor barrier which is disposed about the foam portion The mass barrier portion includes a plurality of vinyl layers that are attached to one another at spaced apart locations. The spaced attachment allows the layers to move substantially independently from one another. The layers are preferably attached to one another by stitching that includes between approximately three to five stitches per inch. There are preferably at least two layers in the mass barrier portion, and, more preferably, between 2 and 4 layers in the mass barrier portion. The cavities in the foam portion are designed to increase the noise absorptive properties of the blanket.

Abstract: A cabin interior assembly for an aircraft is disclosed, the aircraft having a primary airframe structure for supporting vibrating components. The cabin interior assembly includes a shell structure located within the airframe structure. The shell structure is formed from a plurality of axially spaced bell frames. Each bell frame is unitary and extends from one side of the cabin interior, across the ceiling and down to the other side. At least two longitudinal support members are attached to and extend between each adjacent pair of the bell frames. A plurality of panels are mounted to the shell structure with the edges of adjacent panels forming a butt joint as they overlap the bell frames and longitudinal support members. Isolators are disposed between the shell structure and the airframe structure. Each isolator includes a first component mounted to a lower end of a bell frame and a second component mounted on the airframe structure.

Abstract: A heat ejection device is disclosed for a heating system. The heat ejection device is adapted to mix ambient air from an interior with bleed air from a heat source. The heat ejection device includes a housing with an inner passage, an inlet and an outlet. The inlet is adapted to channel ambient air into the housing. The outlet is adapted to channel mixed heated and ambient air out of the housing. A dispenser is located in the housing between the housing inlet and outlet and includes an inner chamber which is adapted to receive heated air from a bleed line. The dispenser has a plurality of apertures formed in it which permit air to flow from the inner chamber into the inner passage for mixing with ambient air to form a flow of mixed air. An acoustically absorptive inlet liner is mounted on an inner surface of the housing at the housing inlet. The absorptive inlet liner is adapted to direct ambient air past the dispenser to minimize turbulence and absorb noise.