| 摘要 |
A rotor blade attached on a hub of a fan includes a blade-part, produced essentially of a composite material of fiber reinforced plastic, and an integrated foot having at least one body for attachment of the rotor blade on the hub of the fan, and at least one reinforcement which is essentially rigid in its longitudinal direction. The reinforcement is fastened to the body and extends at least along one of the sides of the blade. The body is arranged to withstand a state of strain, acting in several axially different directions. The body also extends perpendicular to the sides of the blade, and through the foot to both sides of the blade-part, so as to form a counterweight against a tendency of the blade to turn during operation. |
