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发明授权
CN104185738B 动叶片和风扇 失效 - 权利终止

动叶片和风扇
摘要：
动叶片主体(37)具备沿叶片厚度方向(TD)设置的多个第1复合材料片材群(51)以及多个第2复合材料片材群(53)。各第1复合材料片材群(51)具有从叶片厚度中心(TC)侧向背面(39)侧重叠的多个复合材料片材(49)。各第2复合材料片材群(53)具有从叶片厚度中心(TC)侧向腹面(41)侧重叠的复合材料片材(49)。将各片材群(51、53)中的多个复合材料片材(49)的增强纤维的取向方向进行合成后的方向(CD)相对于翼展方向(SD)向后缘侧倾斜20～45度。
摘要（英）：

A rotor blade main body (37) includes multiple first composite sheet groups (51) and multiple second composite sheet groups (53) which are provided in a blade thickness direction (TD). Each first composite sheet group (51) includes multiple composite sheets (49) which are stacked one on another from a blade thickness center (TC) side toward a dorsal surface (39). Each second composite sheet group (53) includes multiple composite sheets (49) which are stacked one on another from the blade thickness center (TC) side toward a ventral surface (41). A composite direction (CD) of orientation directions of fibers in the multiple composite sheets (49) in each of the sheet groups (51, 53) inclines by 20 degrees to 45 degrees from a span direction (SD).

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