| 摘要 |
<p>Hollow fan blades (30) for turbo fan gas turbine engines (10) are formed of two separate detail halves (30a,30b). Each detail half (30a,30b) has a plurality of cavities (40) machined out to reduce weight and form ribs (42). The ribs (42) extend continuously and without intersecting one another in order to facilitate machining. The ribs extend in different directions in different regions (A,B,C) of the detail half. In at least one region (C), the ribs extend in a serpentine pattern, such that concatenated rib segments (42b) are substantially perpendicular to one another, thereby providing stiffness in multiple directions.</p> |
