| 摘要 |
1512276 Moulded inserts SOC NATIONALE INDUSTRIELLE AEROSPATIALE 24 Nov 1975 [26 Nov 1974] 48241/75 Heading B5A A thin-walled, hollow, composite structure such as a helicopter fuselage 26 is made by locating a plurality of rigid, heat-conducting, reinforcing elements forming two or more independent sub-frames 20 and 23 &c. adjacent internal walls of a rotatable mould (Fig. 1, not shown), said elements following substantially the contours of the internal walls of the mould, introducing a synthetic, plastics, moulding material into the mould and heating and rotating the mould to cause the material to form a relatively thin shell extending between and interconnecting the sub-frames formed by the reinforcing elements. |
