초록 ▼

In the manufacture of a noise attenuation panel for an aeroengine nacelle an adhesive film is applied to a front face of a cellular component of the panel. The adhesive film is caused to reticulate to the ends of the walls of the cells at the front face of the cellular component. A perforate facing

In the manufacture of a noise attenuation panel for an aeroengine nacelle an adhesive film is applied to a front face of a cellular component of the panel. The adhesive film is caused to reticulate to the ends of the walls of the cells at the front face of the cellular component. A perforate facing component of the panel is bonded to the front face of the cellular component by adhesive flow from the cell walls to the facing component. To avoid unpredictable adhesive flow giving rise to cosmetic spots on the front face of the facing component the two components are brought together with the interposition of an adhesive flow control sheet and the reticulated adhesive caused to bond the two components together by adhesive flow under the control of the adhesive flow control sheet.

대표청구항 ▼

1. A method of manufacturing a noise attenuation panel having:a cellular component part which has a front face, a rear face and wall portions which extend from the front face to the rear face and which provide bounding surfaces for a multiplicity of cells which extend from the front face to the rear

1. A method of manufacturing a noise attenuation panel having:a cellular component part which has a front face, a rear face and wall portions which extend from the front face to the rear face and which provide bounding surfaces for a multiplicity of cells which extend from the front face to the rear face, and a facing component part which: has a front face and a rear face, extends across the ends of the cells of the cellular component part at the front face thereof with the rear face of the facing component part adjacent the front face of the cellular component part, is formed with a multiplicity of apertures which provide gaseous fluid communication between the cells of the cellular component part and the front face of the facing component part for the attenuation of noise generated by gaseous fluid flow over the surface of the front face of the facing component part, the method comprising: bonding the facing component part to the cellular component part by the steps of: applying an adhesive film to the front face of the cellular component part causing the film to reticulate to the ends of the walls of the cells at the front face of the cellular component part, introducing an adhesive flow control sheet between the front face of the cellular component part and the rear face of the facing component part, bringing the two component parts together, with the interposition of the adhesive flow control sheet, and causing the reticulated adhesive on the ends of the wall portions of the cells of the cellular component part to bond the two component parts together with adhesive flow to the facing component part under the control of the adhesive flow control sheet.