| 摘要 |
A method of making an at least substantially hollow aerofoil having a separately manufactured root (18) comprising the steps of welding at least two metal sheets (10,12,16) together about their edges (14), manufacturing a root (18) having a surface (20) shaped to receive an end of said joined metal sheets (10,12,16), welding said end of the joined metal sheets (10,12,16) to said surface (20) of the root (18) to form an assembly, and then holding the assembly in holding means via said metal sheets (10,12,16), and heating the assembly to convert the weld joints to diffusion bonds. |
