Abstract: A shock wave suppression device is configured to suppress a shock wave generated on a blade surface of a blade, the shock wave suppression device including a bump cover provided to follow the blade surface and deformable to protrude outward from the blade surface, and a displacing unit configured to displace the bump cover between a steady state to follow the blade surface and a deformed state to protrude outward from the blade surface. The bump cover has a curved shape in the deformed state configured to be a continuous surface from an upstream side to a downstream side in a flow direction of a fluid on the blade surface.

Abstract: A power generator system provides a wind or water powered wheel having pairs of radially positioned arms each having a shaft with independently rotating fins or paddles so the fins are oriented at different angles as the main shaft rotates to allow for increased power generation and reduced drag.

Abstract: The invention relates to a wind power plant, comprising a rotor that can be rotated about a vertical axis, said rotor between two horizontal bearing planes disposed at a distance on top of each other comprising a plurality of rotor blades, which are disposed distributed on a circumferential circle, can each be pivoted about a vertical pivot axis, and the pivot range of which is delimited on both sides by a stop. In such a wind power plant, an improvement in the energy yield, while simultaneously ensuring another operation, is enabled in that the width of the rotor blades is smaller than approximately ? the radius of the circumferential circle.

Abstract: The present teachings relate to a fluid mechanical converter having at least one energy-accumulator mass system that can be powered by a power drive. To provide a fluid mechanical converter, which improves overall efficiency using the simplest components, it is proposed according to the present teachings that the displacement of the driven energy accumulator-mass system is overlaid with a displacement that is caused by at least one inertial force.

Abstract: A phase control structure for crank-connecting control disk has a control disk on a helicopter body. The control disk is connected with a crank assembly pivotally connected to the body. The crank assembly includes a connecting element, a first crank and a second crank. The connecting element, the first crank, and the second crank can pivotally rotate with respect to each other. When the control disk is pulled by a first or second pulling rod, the phase thereof can be achieved using the crank assembly. This can increase the precision in the motion of the helicopter.

Abstract: A power generating system wherein a turbine is mounted on top of a tower or tethered underwater. The turbine includes a rotor having a main blade section connected to a rotor hub and an extender section. An adjusting device positions the extender section between a retracted position within the main blade section and to an extended position to expose more or less of the rotor to the fluid flow. The adjusting device includes a first web-engaging wheel anchored at a hub end of the main blade section and a second web-engaging wheel anchored at a distal end of the main blade section. A web is wound around the first and second web-engaging wheels. The extender section is attached to the web at a hub end of the extender section. A generator is connected to the turbine for generating electrical energy.

Abstract: A dispensing system (20) for drawing fuel from a storage tank (22) to a nozzle (44). The system includes an above-tank suction pump (26) which draws fuel from the tank. The fuel is discharged from the suction pump into a vertically aligned air separator (38) so as to produce a fuel stream that is substantially free of air. The fuel stream is discharged from the air separator to a flow meter (30) and the nozzle through a fuel shutoff valve (46). The open/closed state of the fuel shutoff valve is controlled by a control actuator (48) based on the differential processor across the air separator. Should this differential pressure drop below a given level, the fuel shutoff valve is closed to prevent the system from inadvertently supply a fuel stream with an unacceptably high air content. Gaseous fluid removed by the air separator is supplied to an air eliminator (40). The fuel components of this fluid stream are removed in the air eliminator and returned to the suction pump.

Abstract: A Variable Diameter Rotor (VDR) system (4) having telescoping odd and even blade assemblies (O.sub.b, E.sub.b) wherein the odd blade assemblies define a radial length R.sub.O and the even blade assemblies define a radial length R.sub.E. Each blade assembly (O.sub.b, E.sub.b) defines an internal chamber (64) for accepting a positioning mechanism (70) operative to effect telescopic translation of the blade assemblies (O.sub.b, E.sub.b) such that the radial length R.sub.E of the even blade assemblies (E.sub.b) is equal to the radial length R.sub.O of the odd blade assemblies (O.sub.b) in a first operating mode, and such that the radial length R.sub.E is between about 70% to about 95% of the length R.sub.O in a second operating mode.

Abstract: A wind drive mechanism (10), comprising a housing (16) with a wind entry opening (25) and a wind outlet opening (26). In the housing (16) a rotor (30) is arranged with a vertically extending rotor shaft (31). The rotor shaft (31) is offset from the middle and is provided with rotor rotating arms (37). The rotor rotating arms (37) are slidable relative to the rotor shaft (31). Sails (32) are fixed to the rotor shaft (31) and to the take-up shafts (35), the sails being rolled in and out during each rotation of the rotor (30) with the help of electric motors (29).

Abstract: A rotatable shaft is provided with a plurality of blades each fixed at one end to the shaft and extending radially outwardly therefrom. Each of the blades has at least one gate or opening for the passage of fluid therethrough, and a slide movable between an inner position overlapping the blade and an outer position extending radially therefrom. The slide has means for opening said gate in one position and closing said gate in the other position. A cam for selectively moving said slide between said inner and outer positions is provided on a support for the shaft.

Abstract: A wind-operated rotor, including at least one or more horizontal propellers, mounted along a vertical shaft of a generator secured upon a tower, so as to generate electrical power; a hollow cone secured in opposite directions at the outer ends of each propeller, and means to shift the propeller outwardly at their ends which catch the wind.

Abstract: A propulsion system for a water wheel of the type having a plurality of pontoons interconnected in diametrically opposed pairs by means of spokes which are slidably carried by the water wheel so that the pontoons on the downwardly moving side of the water wheel are at a larger radius than the pontoons on the upwardly moving side of the water wheel, includes a water course which flows a stream of water below the water wheel in a manner such that the pontoons are fully submersed in the water when the wheel is at the lowermost point of its travel, and a chute which is located upstream of the water course and causes the stream of water to drop substantially vertically prior to passing below the water wheel. The section between the chute and water course is shaped so that turbulence caused by the stream dropping through the chute is directed in a manner to urge the pontoons radially inwardly as they pass through the water course.

Abstract: An aircraft is provided with a wing in the form of an annulus having an airfoil shape in radial section, the wing being concentrically mounted on a vertical axle shaft which in turn is rotatably carried by a mounting on the fuselage. Rotation of the wing drives air centrifugally across the upper and lower surfaces to energize the boundary layer, enhance laminar flow, and produce lift. Vanes may be mounted on the inner portion of the surface to increase the flow and thus produce greater life. The vanes may be attached to a stabilizer ring which is eccentrically adjustable by a controlling mechanism to vary the extension of the vanes into and out of the wing at various points in the cource of rotation and thus vary the degree of lift produced. The wing may also be provided within its inner perimeter with airfoil lifting blades which produce additional lift, and the blades may be swung by a stabilizer ring to positions producing a desired thrust in a desired direction as the wing rotates.