Abstract: A wind turbine includes a hub rotatable about an axis and a blade coupled to the hub. The blade includes an inner blade portion having a first end and a second end. The inner blade portion is coupled to the hub at the first end and extends radially outward from the hub to the second end. The blade further includes an outer blade portion having a first end and a second end. The first end of the outer blade portion is pivotably coupled to the second end of the inner blade portion.

Abstract: A wind turbine includes a hub rotatable about an axis and a blade coupled to the hub. The blade includes an inner blade portion having a first end and a second end. The inner blade portion is coupled to the hub at the first end and extends radially outward from the hub to the second end. The blade further includes an outer blade portion having a first end and a second end. The first end of the outer blade portion is pivotably coupled to the second end of the inner blade portion.

Abstract: A method for estimating life of a piston ring includes obtaining a reference profile of the piston ring. The reference profile comprises a plurality of reference fiducials. The method further includes receiving a measured profile of the piston ring. The measured profile comprises a plurality of measured fiducials. The method further includes aligning the measured profile with the reference profile based on one or more of the plurality of reference fiducials and one or more of the plurality of measured fiducials. The method also includes determining one or more wear parameters based on the aligned measured profile and the reference profile. The method also includes generating a wear model based on the one or more wear parameters. The method also includes estimating a life of the piston ring based on the wear model.

Abstract: A linear oscillation system comprising a housing, a stationary assembly, a moveable assembly and a suspension system is disclosed. The suspension system is mechanically coupled between the moveable assembly and the housing. The suspension system comprises a plurality of planar elastic members and plurality of longitudinal elastic members disposed between the plurality of planar elastic members. A first end of each of the plurality of planar elastic members is mechanically coupled to at least one of the plurality of planar elastic members. A second end of each of the plurality of longitudinal elastic members is mechanically coupled to the housing.

Abstract: Washing machine appliances and damper assemblies are provided. A damper assembly includes a cylinder defining a central longitudinal axis, the cylinder including a sidewall that defines an interior, the sidewall defining a central bore and a pocket concentrically surrounding the central bore, the sidewall including an upper shoulder and a lower shoulder that each connect the pocket and the central bore. The damper assembly further includes a piston partially disposed in the central bore and movable along the longitudinal axis relative to the cylinder. The damper assembly further includes a tube assembly concentrically surrounding the piston and at least partially disposed in the pocket, the tube assembly having a length that is less than a length of the pocket. The piston is further movable along the longitudinal axis relative to the tube assembly.

Abstract: Washing machine appliances and damper assemblies are provided. A damper assembly includes a cylinder defining a central longitudinal axis, the cylinder including a sidewall that defines an interior, the sidewall defining a central bore and a pocket concentrically surrounding the central bore, the sidewall including an upper shoulder and a lower shoulder that each connect the pocket and the central bore. The damper assembly further includes a piston partially disposed in the central bore and movable along the longitudinal axis relative to the cylinder. The damper assembly further includes a tube assembly concentrically surrounding the piston and at least partially disposed in the pocket, the tube assembly having a length that is less than a length of the pocket. The piston is further movable along the longitudinal axis relative to the tube assembly.

Abstract: A linear oscillation system comprising a housing, a stationary assembly, a moveable assembly and a suspension system is disclosed. The suspension system is mechanically coupled between the moveable assembly and the housing. The suspension system comprises a plurality of planar elastic members and plurality of longitudinal elastic members disposed between the plurality of planar elastic members. A first end of each of the plurality of planar elastic members is mechanically coupled to at least one of the plurality of planar elastic members. A second end of each of the plurality of longitudinal elastic members is mechanically coupled to the housing.

Abstract: An X-ray tube anode assembly, an X-ray tube assembly and a method for heat management to an X-ray assembly having a movable X-ray target having a target surface. The anode assembly includes a drive member arranged and disposed to provide oscillatory motion to the target assembly and a target surface that is configured to remain at a substantially fixed distance from a cathode assembly during oscillatory motion.

Abstract: An X-ray tube anode assembly, an X-ray tube assembly and a method for heat management to an X-ray assembly having a movable X-ray target having a target surface. The anode assembly includes a drive member arranged and disposed to provide oscillatory motion to the target assembly and a target surface that is configured to remain at a substantially fixed distance from a cathode assembly during oscillatory motion.