Patent ID: 6273681
Filing Date: 2001-08-14
Classification: B64C,H02N,Y02T,Y10T

Abstract:
A rotor blade flap driving apparatus comprising:a blade;a flap angularly displaceably attached to a trailing edge of the blade;an actuator housed in the blade, which expands and contracts in a spanwise direction of the blade thereof; anddisplacement magnifying means for magnifying the displacements of the actuator and transmitting the magnified displacements to the flap to angularly displace the flap in a vertical direction thereof,the displacement magnifying means including:a first displacement magnifying mechanism having:a first link disposed on one side portion of the actuator, one end of the first link being angularly displaceably coupled to one end of the actuator,a second link disposed on the one side portion of the actuator, one end of the second link being angularly displaceably coupled to another end of the actuator, another end of the second link being angularly displaceably coupled to another end of the first link,a third link disposed on the other side portion of the actuator, one end of the third link being angularly displaceably coupled to the one end of the actuator; anda fourth link disposed on the other side portion of the actuator, one end of the fourth link being angularly displaceably coupled to the other end of the actuator, another end of the fourth link being angularly displaceably coupled to another end of the third link,the first displacement magnifying mechanism being a mechanism for magnifying expansion and contraction displacements of the actuator by moving in a direction along which the coupling portion between the first and second links, and the coupling portion between the third and fourth links approach and separate from each other in accordance with expansion and contraction of the actuator; anda second displacement magnifying mechanism having an input member which is coupled to the first displacement magnifying mechanism and output rod, one end of which is coupled to the flap for magnifying a displacement of the first displacement magnifying mechanism.