Abstract: The present application includes a blade-pitch control system for controlling a pitch angle of each of a plurality of blades on an aircraft rotor. A feedback lever associated with each blade is pivotally mounted to the rotating portion of a swashplate assembly. A pitch link connects an output arm of a lever to a pitch horn of a corresponding blade, and a feedback link connects the input arm of the lever to a yoke. Flapping motion of the yoke causes motion of the feedback link, and this motion causes corresponding rotation of the lever. Rotation of the lever causes motion of the pitch link, which changes the pitch angle of the attached blade. This provides for selected pitch-flap coupling between flapping motion of the yoke and pitch motion of the blades.

Abstract: A driving device for a ship is described, including a rudder propeller with a propeller shaft and with a vertical shaft which drives the propeller shaft via an angular gear unit and which is rotatable and driven by an electric driving motor, and including a lifting device for moving the rudder propeller between a retracted position within the ship and a deployed operating position outside the ship.

Abstract: Disclosed are a thruster system and a vessel including the same. The thruster system according to an exemplary embodiment of the present invention includes: a canister on which a thruster is installed, and which is movable upward and downward in a hull; a wire controller which controls a wire connected with the canister and enables the upward and downward movement of the canister; and a ballast tank which is installed in the canister and filled with water in order to offset the buoyancy that is applied to the canister.

Abstract: The present invention relates to a propulsion container (1) comprising space for a propeller driver, the propulsion container having a first end (3) and a second end (4), said second end (4) having a surface; a trunk (5) inside which the propulsion container (1) is moveably mounted, allowing the propulsion container (1) to be moved between a first position and a second position; a first sealing arrangement (6, 7) arranged to seal, in the first position of the propulsion container, a first gap between the propulsion container (1) and the trunk (5) to define a first watertight space on a second side of the first sealing arrangement, and a second sealing arranged essentially at the second end (4) of the propulsion container (1) and arrangement (8) arranged to seal, in the second position of the propulsion container, a second gap between the propulsion container (1) and the trunk (5) to define a second watertight space on a second side of the second sealing arrangement, said second sealing arrangement (8) compris

Abstract: One embodiment of a fan assembly includes a housing having a base member and a lip member extending outwardly from the base member for defining an enclosure. The fan assembly may further include a toothed track assembly, a wheel assembly, a first motor, a second motor, and a fan member. The toothed track assembly includes a toothed track member disposed within the enclosure. The wheel assembly includes a pair of toothed wheels adapted to move on the toothed track member. The first motor is operatively coupled to the wheel assembly and is capable of rotating the pair of toothed wheels. The fan member is coupled to the wheel assembly, such that the fan member moves along the toothed track member when the first motor rotates the pair of toothed wheels on the toothed track member. The second motor is operatively coupled to the fan member for rotating the fan member.

Abstract: An anti-torque mechanism which permits a full range of swashplate assembly motion. The anti-torque mechanism generally includes an anti-torque shaft and a compound bearing mounted thereto to provide five-degrees-of-freedom (spherical-linear-elastomeric) so as to permit a swashplate attachment point to move axially in response to pitch input; pivot in response to swashplate tilt; and move in/out in the radial direction.

Abstract: The present invention relates to an adjustment device for adjusting the pitch angle of the propeller blades (4) of a propeller pump (1) and a propeller pump incorporating such a device.

Abstract: A cooling fan comprising a fan housing and a plurality of blades rotatably disposed within a conduit through the fan housing. Each of the plurality of blades extends radially outward from a hub to a tip. The radial gap between the tips of the blades and the conduit defines a tip clearance. The cooling fan further comprises an tip clearance reduction system operable to control the tip clearance.

Abstract: The invention concerns a washing fluid pump (1) for windows and/or headlamp cleaning installations on motor vehicles including at least one motor, at least one pump housing (2) with at least one impeller (11) arranged therein, at least one intake (8) and at least two selectively actuable outlets (7). The washing fluid pump (1) is distinguished in that the pump housing (2) includes at least two pump chamber regions which are arranged in mutually superposed relationship, that at least two outlets (7) are associated with different pump chamber regions, and the impeller (11) is axially displaceably supported in the pump housing (2) in such a way that it can assume its operative position selectively in one pump chamber region or the other.

Abstract: A self-guiding wind turbine made of two reinforced parallel girders whose side center of thrust is displaced from the column axis where it is supported and turns. Its dihedral-shaped two-bladed rotor is self-stabilizing since its center of thrust is behind its center of gravity and the guiding axis of the turbine, thus improving self-guiding whilst in motion. The axial thrust is controlled, whilst the head and rotor are tilting, hydraulically by counter-pressure, ensuring they do not surpass the power collected and the moments on the structure, shoe and ground. The self-guiding structure can tilt hydraulically lowering its head and rotor and facilitating its assembly and maintenance, and can remain “asleep” when not in use, thus reducing the visual impact on the environment. This turbine makes use of the force of the wind to control itself, simplifying the manufacture of large turbines connected to the network or in isolated applications.

Abstract: A helicopter blade assembly for permitting rapid forward flight in a helicopter having separate means for providing a forward impetus. The assembly has a set of rotatable blades attached to a substantially vertical mast. These blades slope downward near to their distal ends, thereby creating an inverted disk virtual air foil when the blades are rapidly rotated by the mast. In a preferred embodiment the camber of the blades and, therefore, the shape of the virtual air foil is controllable.

Abstract: A refrigerator having an improved fan which blows air towards a heat exchanger such as an evaporator. The refrigerator has a body having a refrigerating chamber, a freezing chamber, and a chilled air passage which communicates with the refrigerating and freezing chambers. An evaporator for generating a chilled air by heat-exchanging with an air is installed in the body. The evaporator has a spiral-shaped refrigerant pipe which is disposed in a longitudinal direction of the chilled air passage, and a plurality of heat exchange pins disposed around the spiral-shaped refrigerant pipe, for increasing a heat exchange area between the air and the spiral-shaped refrigerant pipe. A fan for blowing the air toward the evaporator and for circulating the chilled air into the refrigerating is installed in the chilled air passage. A motor is fixed to a wall of the body forming the chilled air passage.

Abstract: A cooling apparatus for use in a cooling system is disclosed. The cooling apparatus comprises an evaporator having a conductive pipe which is wound spirally, and a blowing device for blowing air toward the evaporator. A plurality of fins for heat exchange are disposed on the outer surface of the conductive pipe. The blowing device has a blowing motor, a fan being rotated by the blowing motor, and a fan moving device for reciprocating the fan along the blowing direction during the rotation of the fan. Since the cool air generated from the evaporator moves with being rotated by the spirally wound conductive pipe, the air flow becomes complex and thus the heat exchange efficiency becomes high. Also, since the fan is reciprocated along the blowing direction, the blowing power is varied repeatedly and the heat exchange efficiency becomes even higher.

Abstract: A propeller unit, each blade (1) being fixed to a blade foot (2) rendered integral with a hub (3) rotating around an axis but mobile with respect to the hub on translation in the direction of the axis and rotating around a second axis orthogonal to the first axis, this foot (2) being moreover rendered integral with an arch (5) in translation but free with respect to the arch on rotation; a pitch modifier is linked to the arch to translate the arch along the spin axis of the hub (3); the hub (3) and each blade foot (2) have members (8, 23) for activating the feet in rotation provoking from translation of the arch (5) the rotation of the blade feet around an axis mobile on translation in the same direction and orthogonal to the blade feet.

Abstract: An aerogenerator is provided with a rotor attached to one end of a variably orientable axis. The axis is, in turn, attached to apparatus for either using the energy produced by the rotatable rotor or apparatus for transforming the energy produced by the rotor. The apparatus includes a system for regulating the velocity of rotation of the rotor as either a function of the force of incident wind on the rotor or as a function of the value of energy which is desired to be produced by the aerogenerator. The system includes a device for automatically controlling the angular movement of the axis as well as a device for measuring the velocity of the rotation of the rotor, whereby the axis can be inclined so that a substantially constant rotational velocity is achieved.

Abstract: A fan impeller for axial flow having automatically variable-pitch blades ached to a rotatable hub for attaining maximum lift and inhibiting stall in a varying back pressure regime. The blades are attached for rotation about their axes to the hub, and are connected through a crank and link to a drive shaft. The hub is attached to the drive shaft to permit relative axial movement, but to preclude relative rotational movement. Varying back pressure moves the blades and the hub in variable blade rotation planes, causing changes in blade pitch. Springs and dash-pots, connecting the hub and shaft, act axially to give non-linear restoring forces and damping to the blade pitch changes.