| 摘要 |
A light-weight panel, e.g. for aircraft, is manufactured by preparing a panel preform having a pair of surface members or skins (11, 12, 29, 30, 55, 56, 62, 64) separated and supported by an internal core in which spaces or interconnected pores provide vents to an edge of the panel, the wall surface members and the core comprising fibrous material, which may be carbon fibre, and using a pyrolysis process such as CVD to form a pyrolytic matrix around the fibres within the fibrous material, there being a flow of gas through the vents during the pyrolysis process. <IMAGE> |
