초록 ▼

A rotor and a method for the production thereof which incorporates the inherently strong, highly damped, yet light weight characteristics of fiber reinforced plastic composites, Achieving with a minimal amount of added weight in the form of high density material a significant reduction in the vibrat

A rotor and a method for the production thereof which incorporates the inherently strong, highly damped, yet light weight characteristics of fiber reinforced plastic composites, Achieving with a minimal amount of added weight in the form of high density material a significant reduction in the vibratory response of the rotor due to hydrodynamic flow excitation, by selectively tailoring the mass distribution therein as by adding the high density material at selected locations of the rotor.

대표청구항 ▼

A high damping light weight mass loaded composite rotor comprising: a. a hub having an axis and adapted for rotation about the axis; b. at least one blade extending from said hub, said blade having a composite portion being made of a multidimensionally braided multiple fiber reinforcement wherein th

A high damping light weight mass loaded composite rotor comprising: a. a hub having an axis and adapted for rotation about the axis; b. at least one blade extending from said hub, said blade having a composite portion being made of a multidimensionally braided multiple fiber reinforcement wherein the individual fiber yarns of said multidimensionally braided multiple fiber reinforcement interact in a through-the-thickness helical type entanglement of individual fiber yarns to form a multidimensionally braided composite skeletal shape such that said multidimensionally braided multiple fiber reinforcement lacks planes of delamination, a rubber material insert portion totally encompassed by said multidimensionally braided multiple fiber reinforcement, and a high density material portion wherein said high density material is utilized and located in localized high vibration active regions of said blade; and c. a matrix resin to impregnate said multidimensionally braided multiple fiber reinforcement and to rigidly bind the multidimensionally braided multiple fiber reinforcement, the rubber material insert and the high density material, whereby the mass distribution with the high damping lightweight mass loaded composite rotor is tailored to reduce vibratory response of said blade to flow excitation.