Preferably, said wing structure further comprises a single symmetrical airfoil having a maximum thickness and a chord length and comprising a forward section that has a symmetrical aeronautical airfoil shape that is preferably from 10 to 30 percent as wide as it is long, said forward section being followed by an elongated, thin, substantially straight trailing section that is an integral extension of said symmetrical aeronautical airfoil shape, said elongated, thin, substantially straight trailing section preferably having a length that is from 25 to 150 percent of the chord length of said symmetrical aeronautical airfoil shape, the two sections forming a concavity where they merge together. In this embodiment, hinged wing structure 12 is connected to a mast 14 and comprises leading element 20 and trailing element 22. Leading element 20 preferably pivots about mast pivot axis 28 which is guyed by spar and guy wire set 11; while trailing element 22 pivots about hinge axis or spar 26. In preferred embodiments, the oscillating motion is self sustaining and needs no mechanical assist.
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Preferably, the apparatus further comprises a trim bias element that is attached to said symmetrical airfoil in order to facilitate the oscillation. Preferably, this weight can be moved towards the center of mass of the wing structure as a way to control its oscillation. Referring to FIG. 3, a time lapse view of eight steps in the oscillation cycle of wing structure 12 is presented. Referring to FIG. 35, a sequence drawing of the steps in the oscillation of hinged wing structure 12 is presented. Referring to FIG. 6, a time lapse view of eight steps in the oscillation cycle of wing structure 12 is presented. Dolor de la parte de atras de la rodilla . In a further preferred embodiment, the invention is an apparatus for extracting power from a moving fluid stream, said apparatus comprising: a mast; a wing structure comprising a combination having one or more vertically oriented airfoil elements that are connected to said mast; and a power take-off mechanism that is driven either directly by a pivoting movement of said mast and said single symmetrical airfoil or by a pivoting movement of said single symmetrical airfoil with said mast remaining stationary; wherein said wing structure is configured to present airfoil surfaces to the moving fluid stream that generate lift first in one direction that is transverse the direction of movement of the moving stream and then in another direction that is opposite said one direction during an oscillation of said wing structure in the moving fluid stream; thereby maximizing the aerodynamic lift of said wing structure in the moving stream, which in turn maximizes the conversion of the energy of the moving stream into useful power.
Dolores Musculares Por Ansiedad
In a further preferred embodiment, the invention is an apparatus for extracting power from a moving fluid stream that is moving above a ground level, said apparatus comprising: a stationary support tower; a rotatable drive shaft operable for bidirectional rotation that is supported by said stationary support tower; a wing structure comprising at least two stand-off arms or torque arms, each of which stand-off arm or torque arm having two ends, a first end that is fixed to said drive shaft and a second end that is pivotably attached to a hinge axis or spar, and a single symmetrical airfoil that is attached to each said hinge axis or spar, said single symmetrical airfoil having a leading edge, symmetrically curved sides and a chord length; and a power take-off mechanism that is operative to convert bidirectional rotation to unidirectional rotation; wherein said wing structure is configured to oscillate back and forth in the moving fluid stream which is operative to cause said rotatable drive shaft to pivot back and forth; and wherein said pivoting movement of said rotatable drive shaft is converted by said power take-off mechanism to unidirectional rotational movement in order to provide motive power to an electricity generator.
In another preferred embodiment, the invention is a method of generating power comprising: placing an apparatus disclosed herein in a location that experiences a sustained wind; initiating the oscillating of said wing structure thereby causing said rotatable drive shaft or mast or said rotatable sleeve surrounding said mast to rotate back and forth; and converting the back and forth movement to unidirectional rotation in order to produce motive power and provide said motive power to an electricity generator. In another preferred embodiment, the invention is a method of generating power comprising: the step of placing an apparatus disclosed herein in a location that experiences a wind; the step of allowing the combination of said stand-off arms and said symmetrical airfoil to oscillate in said wind, causing said mast or said sleeve surrounding said mast to rotate back and forth; the step of converting the back and forth movement into unidirectional rotation using a power take-off mechanism that is operative to convert bidirectional rotation to unidirectional rotation; and the step of providing motive power to an electricity generator by means of said power take-off system.
Dolor Neuropático Periférico
FIGS. 25A and 25B are elevation views of embodiments of the invention constructed of a rigid sheet of lightweight material within an articulated framework. FIG. 50 is a schematic elevation view of another preferred embodiment of the invention. BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS The features of the invention will be better understood by reference to the accompanying drawings which illustrate presently preferred embodiments of the invention. FIGS. 19A, 19B and 19C are three perspective views, at three different points in an oscillation, of a preferred six element of the invention having a geared arrangement. In a preferred embodiment, embodiments of mechanism 12 having more than two elements are constrained to adopt a preferred airfoil shape. Said fin 23 preferably has a symmetrical aeronautical airfoil shape for its leading section that is preferably from 10 to 30 percent as wide as it is long, a concave middle section, and an elongated, thin, substantially straight trailing section.
In another preferred embodiment, the wing structure’s airfoil elements comprise a plurality of stacked elements. Referring to FIG. 8, another embodiment of the articulated wing structure 12 of FIG. Referring to FIG. 34, a top view cross section of another preferred embodiment of the single body wing structure of FIG. Maintenance is greatly simplified and less costly, because the wind fin is a much simpler system than both (1) conventional horizontal-axis wind turbines, where the fan-like rotor is located at the top of a tower, and (2) vertical-axis wind turbines, where the rotor blades revolve around a vertically aligned axle. State-of-the-art wind turbines (as well as older wind turbines) have a number of major technical drawbacks that make them expensive to manufacture as well as maintain: (1) they require designs that must overcome great forces at the blade root, including bending in two axes and large torsional loads; they must also resist very large centrifugal forces as well as loading fluctuations caused by wind shadowing from the tower or local ground effect; (2) the towers that support wind turbines must resist high overturning moments at their base due to the very high forces concentrated at the center of the rotor; because of the large rotor blade size in larger systems, towers cannot be guyed; this requires the towers to be constructed of very strong and expensive materials, contributing substantially to the overall system cost; (3) the high-rotation tip speeds of smaller and older large-scale turbines presents a lethal threat to birds and bats; much of the public objection to wind turbines is based on the perception that they contribute to a high death rate for these animals; in addition, many wind turbines are perceived to be noisy; (4) high-lift-capable service equipment is often required for maintenance of the motor/generators that are necessarily located at the top of the wind-turbine towers in horizontal-axis wind turbine systems; (5) in order to withstand very high winds, turbine blades in modern conventional horizontal-axis wind turbine systems must be allowed to feather by rotating the blades approximately 90 degrees along their longitudinal axes, which requires complex and expensive gearing; in Darrieus-type vertical-axis wind turbine systems, the blades cannot be feathered and powerful mechanical brakes or other speed control devices must be employed, increasing the expense of manufacture; (6) Darrieus-type systems are not self-starting and require motors to get the blades rotating at a functional speed; and (7) turbines must be fairly widely spaced to minimize side-by-side and tandem interference with neighboring installations.
Dolor Neuropatico Curso
Preliminary wind-tunnel tests and computer modeling have shown that preferred embodiments of the disclosed technology are expected to be comparable if not superior in performance to current state-of-the-art wind turbines of comparable size-at approximately half the system cost. This is a significant improvement in performance over state-of-the-art wind turbines of comparable size. A selection of shapes based upon desired lift/drag characteristics for given wind speeds is made, and this preferably determines the shape of a single fin system or a multiple element system.
Dolor Sordo Profundo Y Continuo
The downwind orientation of the oscillating wind fins, combined with their relatively short range of movement and lower speeds than wind turbine blades, prevents this new technology from being lethal to birds and bats. Referring to FIGS. 24A-24H and 52, preferred embodiments of wind power generator 10 are illustrated. Referring to FIG. 31, another preferred embodiment of system 10 is illustrated that operates as a wind power generator on the basis of hinged wing structure 12 oscillating in the wind.
Dolor Neuropático Crónico
Referring to FIG. Dolor en la corva de la rodilla . 41, cross sections of different embodiments of wing structure 12 are illustrated. FIG. 2C is a cross sectional view of the trailing edge of a preferred embodiment of the wing structure of the invention, the trailing edge comprising a permanent trim bias member. 2A, stand-off arm 15 is shown fixed to sleeve 13 and pivotably attached to fin 23. FIG. This research suggests that the wind fin technology will be technically and economically feasible for use at many different scales, from small-scale distributed wind systems up to large, utility-scale systems. In preferred embodiments, system 10 generates power without posing the danger to birds or bats that a traditional horizontal-axis wind turbine poses. The term “linear” means that an output is a constant multiple of an input. 7 and that is one of a large family of airfoils (referenced in the software VisualFoil V.4.1 by Hanley Innovations of Ocala, Fla., 34483, the disclosure of which is incorporated by reference as if fully set forth herein).