초록 ▼

A balancing of aerodynamic optimization and structural optimization provides a wind turbine airfoil having substantially improved performance characteristics. Mathematic modeling yields maximum aerodynamic criteria that are coupled with a structural analysis to modify the optimum aerodynamic design

A balancing of aerodynamic optimization and structural optimization provides a wind turbine airfoil having substantially improved performance characteristics. Mathematic modeling yields maximum aerodynamic criteria that are coupled with a structural analysis to modify the optimum aerodynamic design into a balanced, substantially optimized airfoil configuration. The resulting airfoils have substantial performance impact on GAEP. The airfoil is based on the theoretical optimum aerodynamic structure modified as required to maximize structural integrity. The method for maximizing airfoil performance permits the design of airfoils of predictable performance while achieving necessary structural integrity. A family of airfoils having operational and structural characteristics with substantially enhanced performance capability includes thickness-to-chord ratios ranging from 14% to 45%.

대표청구항 ▼

A balancing of aerodynamic optimization and structural optimization provides a wind turbine airfoil having substantially improved performance characteristics. Mathematic modeling yields maximum aerodynamic criteria that are coupled with a structural analysis to modify the optimum aerodynamic design

A balancing of aerodynamic optimization and structural optimization provides a wind turbine airfoil having substantially improved performance characteristics. Mathematic modeling yields maximum aerodynamic criteria that are coupled with a structural analysis to modify the optimum aerodynamic design into a balanced, substantially optimized airfoil configuration. The resulting airfoils have substantial performance impact on GAEP. The airfoil is based on the theoretical optimum aerodynamic structure modified as required to maximize structural integrity. The method for maximizing airfoil performance permits the design of airfoils of predictable performance while achieving necessary structural integrity. A family of airfoils having operational and structural characteristics with substantially enhanced performance capability includes thickness-to-chord ratios ranging from 14% to 45%. d, and bottom stand each having a right end portion and a left end portion; a right hinge connector and a left hinge connector respectively installed at the right and left end portions of the monitor stand unit, said right and left hinge connectors adapted for permitting said display unit to be rotated in a vertical plane normal to the monitor stand unit; and means for allowing the monitor stand unit to be opened and closed completely, when the display unit is swung in the vertical plane normal to the monitor stand unit, between a complete opening of the monitor stand unit and a complete closure thereof, respectively, and for allowing the display unit to be fixed and released at one or more positions between a complete opening of the monitor stand unit and a complete closure thereof, where a complete closure of the monitor stand unit occurs when the display unit is substantially coplanar to the top and bottom stands, and a complete opening occurs when the display unit is substantially perpendicular to the top and bottom stands; wherein the hinge connectors are adapted to permit insertion of a back side of said stand unit into a receiving groove part of said display unit when the stand unit is closed, whereby the display unit is capable of being hung on a wall. 3. A liquid crystal display (LCD) monitor stand unit adapted for supporting a display unit including an LCD monitor, said monitor stand unit comprising: a generally planar top stand and a generally planar bottom stand, adapted for supporting the display unit in cooperation with one another and with the monitor stand unit, said monitor stand unit, top stand and bottom stand each having a right end portion and a left end portion; a right hinge connector and a left hinge connector respectively installed at the right and left end portions of the monitor stand unit, said right and left hinge connectors adapted for permitting said display unit to be swung in a vertical plane normal to the monitor stand unit; and means for allowing the monitor stand unit to be opened and closed completely, when the display unit is rotated in the vertical plane normal to the monitor stand unit, between a complete opening of the monitor stand unit and a complete closure thereof, respectively, and for allowing the display unit to be fixed and released at one or more positions between a complete opening of the monitor stand unit and a complete closure thereof, where a complete closure of the monitor stand unit occurs when the display unit is substantially coplanar to the top and bottom stands, and a complete opening occurs when the display unit is substantially perpendicular to the top and bottom stands; wherein the hinge connectors comprise: a longitudinally extended bracket having a generally L-shaped cross-section, said bracket comprising a horizontal plate and, normal thereto, a vertical plate, said vertical plate containing a shaft hole; a rotatable shaft, normal to the vertical plate and passing through the shaft hole, said rotatable shaft having a proximal end and a distal end; a rotating bar longitudinally extending normal to the rotatable shaft, said rotating bar attached at an end thereof to the rotatable shaft at the distal end thereof, said rotating bar adapted to be connected to said display unit; a stopping hole forming a circular arc in the vertical plate of the bracket, located below said rotatable shaft; and a stop bar, said stop bar comprising means for causing the rotatable shaft to rotate only between first and second predetermined locations. 4. The LCD monitor stand unit of claim 3, wherein said stop bar comprises a vertical part connected to said rotatable shaft and a horizontal part, located at the lower portion of the vertical part and inserted into a circular arc groove of the bracket, whereby the rotatable shaft is rotatable only between a first end and a second end of the circular arc groove. 5. The LCD monitor stand unit of claim 3, wherein a stop c