Patent ID: 11959398
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Other special machines (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 0:
1. A composite blade which is formed by using a composite material containing reinforcing fibers and a resin, and has a positive pressure surface and a negative pressure surface, the composite blade comprising:
a pressure-side part which is a part on a positive pressure surface side in a blade thickness direction, which is a direction joining the positive pressure surface and the negative pressure surface;
a suction-side part which is a part on a negative pressure surface side in the blade thickness direction; and
a metal shield portion provided on a leading edge side which is an upstream side in a circulation direction in which a fluid circulates, wherein
the metal shield portion includes a main body portion provided on the leading edge side, and an embedded portion provided on a trailing edge side which is a downstream side of the main body portion in the circulation direction and provided between the pressure-side part and the suction-side part, and
a plate thickness of the metal shield portion in the blade thickness direction decreases from the main body portion toward the embedded portion, wherein
the main body portion has an outer surface part which is an outer surface side and an inner part which is a part on an inner side of the outer surface part, and
in the metal shield portion, at least the outer surface part has a solid structure and at least the embedded portion has a lattice structure.