Referring to Fig. 31, another preferred embodiment of system 10 is illustrated that operates as a flapping wind power generator on the basis of hinged wing structure 12 flapping in the wind. Referring to Fig. 33, a top view cross section of another preferred embodiment of the hinged wing structure of Fig. The large wind surface of the wind fins in accordance with this embodiment of the invention, compared to the much smaller wind surface areas of wind turbine blades, creates greater responsiveness to wind force, allowing the new system to function effectively at lower wind speeds than existing wind turbines. 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 at the blade root 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 Danϊeus-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.
- Hemisferectomía funcional
- Condimentos picantes
- El jugo de ½ limón
- Vasoconstricción: Estrechamiento de vasos sanguíneos
- Esperar al menos 2 horas después de la última comida para acostarlo
- Micción irregular
- Fases del Proceso Terapéutico
- Tener miedo, aunque el peligro no sea real (esté solo en mi pensamiento)
In an age of fossil fuel depletion and high energy prices, wind power is a preferred choice for those wishing to power society in a sustainable manner and in a manner which does not cause harm to our environment. Maintenance is greatly simplified and less costly, because the Wind Fin is a much simpler system than both (1) conventional horizontal-axis wind turbines (HAWTs), where the fan-like rotor is located at the top of a tower, and (2) vertical-axis wind turbines (VAWTs), where the rotor blades revolve around a vertically aligned axle. In preferred embodiments, the invention comprises three major components: (1) a mast, which both anchors the structure and also serves as a pivot axis for the vertical, hinged wind fin; the mast can be guyed for stability or can be free standing; (2) a vertical, hinged fin, attached to the mast by a sleeve, which allows the fin to swing freely about the mast; these aerodynamic wing elements automatically orient downwind and respond readily to wind with an oscillating motion; the fin’s oscillating action is self-sustaining in the wind and needs no mechanical assist and is self-starting; fins can be constructed in several different ways; for example, they can be built-up like an aircraft wing with a skin made of fiberglass or other durable membrane that conforms to symmetrical wing ribs, or constructed of a rigid material within a frame; because these fins are not subject to the enormous, alternating, bending stresses of wind turbine blades, they can be less complex and much less costly to manufacture; fins also can easily be designed in many different color schemes and patterns, making them more visually appealing than wind turbines and able to fit less obtrusively into both built and natural environments; and (3) a power- extraction system that is attached to the mast so that it is not affected by the wind direction; the reciprocating motion of the hinged fin drives a concentric shaft that turns two stacked, opposing, overrunning clutches; these clutches convert oscillating motion to continuous motion and, in turn, drive a bevel gear that turns a generator, producing electricity.
Dolor De Estomago
The second theoretical Wind Fin system designed for modeling consisted of a fiberglass fin measuring 20 ft. The visual advantages of this new technology will allow it to overcome public objections to wind power on aesthetic grounds. In addition, some embodiments have the potential to eliminate lethality to birds and bats caused by wind-power systems, overcome public objections to the aesthetics of wind-power structures, and improve public acceptance of wind-power generation. In another preferred embodiment, moveable weights (not shown) are included in at least some sections of body 20. These weights are move in a controlled manner along a pathway transverse to mast 14, which would be horizontal in the embodiments shown. Crema para el dolor lumbar . Thus, the following drawings and description are to be regarded as illustrative in nature and not restrictive. Figs. 35 and 36 are sequence drawings of the steps in an oscillation of preferred embodiments of the invention.
Dolor Espalda Pecho
Fig. 25 A and 25B are elevation views of embodiments of the invention constructed of fabric-like material attached to an articulated framework. Figs. 19 A, 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. Another obj ect of preferred embodiments of the invention is to be more aesthetically pleasing than wind turbines. In addition, some embodiments of the oscillating wind fms are expected be far less noisy than wind turbines. Initial testing, however, indicates that this new technology also is much more affordable and cost-effective than wind turbines. It compares data pertaining to these companies’ leading IkW products, Bergey’s XL.l Wind Turbine and Southwest Windpower’s Whisper 200 Wind Turbine (formerly the H80), to the above-described IkW computer model of the Wind Fin. 46A and 46B that indicates weight distribution of the theoretical system under study.
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 fluttering of said leading element and said trailing element which causes said sleeve to move back and forth; converting the back and forth movement into rotation of said drive shaft to produce motive power; and providing said motive power to a generator.
Figs. 2OA, 2OB, 2OC and 2OD are plan views of a preferred three element embodiment of the invention having a linkwork arrangement, with the elements shown at a different stage of an oscillation sequence in each view. This large vertical extent (although system 10 could be reoriented to have a large horizontal extent) permits the generation of a reasonable amount of power, with the back and forth fluttering motion used to rotate a power-takeoff mechanism as is well known in the mechanical arts. This generates the most powerful stroke during the first half-cycle to drive a power extraction mechanism. Dolor en parte de atras de la rodilla . Preferably, the apparatus of further comprises: a linkwork mechanism that links said first airfoil portion to said third airfoil portion.