The invention relates to a wind turbine blade with at least one control surface and an actuator inside the main body of the wind turbine blade for moving the control surface, wherein the actuator comprises a fluidic muscle, a controller and a pump, and wherein the fluidic muscle is adapted to change in length and width when the pressure of the fluid within the fluidic muscle is varied.

Wind turbine blade

A method of operation for use with an augmented reality spatial interaction and navigational system includes receiving initialization information, including a target location corresponding to a point of interest in space, and a source location corresponding to a spatially enabled display. It further includes computing a curve in a screen space of the spatially enabled display between the source location and the target location, and placing a set of patterns along the curve, including illustrating the patterns in the screen space.

Augmented reality spatial interaction and navigational system

Technologies are generally described for controlling a flight path of a UAV based image capture system for solid modeling. Upon determining an initial movement path based on an estimate of a structure to be modeled, images of the structure to be modeled may be captured and surface hypotheses formed for unobserved surfaces based on the captured images. A normal vector and a viewing cone may be computed for each hypothesized surface. A set of desired locations may be determined based on the viewing cones for the entire structure to be modeled and a least impact path for the UAV determined based on the desired locations and desired flight parameters.

Automatic flight control for UAV based solid modeling

A flap is attached to a rear end of a blade so as to be angularly displaceable. Displacement magnifying means magnifies the amount of displacement from an actuator to drive the flap. An input portion to which the displacement is applied from the actuator is expandably and contractibly supported by bellows. Likewise, an output portion to which the input amount of displacement is magnified is expandably and contractibly supported by a bellows. Consequently, displacement magnifying means is realized in which, compared with a existing piston with O ring which slides on the cylinder inner wall, no deterioration in response characteristic due to high friction occurs when the actuator is displaced at high speed, and no fluid leakage due to deterioration or wear of the O ring occurs. According to this structure, a rotor blade flap driving apparatus is obtained which has displacement magnifying means with fast response and no fluid leakage.

Rotor blade flap driving apparatus

The invention relates to a wind power plant with a tower, a rotor having at least one rotor blade being substantially radially distant with respect to a rotor axis and being rotatably supported with respect to a substantially horizontal rotation axis in a portion at the top of said tower, preferably at machine nacelle rotatably supported on a rotation axis extending substantially along the gravitational direction, a sensor means associated to said rotor for generating sensor signals depending on the mechanical load of the rotor, and an analysis means, especially a data processing means, wherein at least two, preferably pair-wise mounted, sensor elements are associated to at least one, preferably to each, rotor blade of the rotor and the evaluation means is designed for determining evaluation signals representing the mechanical loads of at least one rotor blade on the basis of the sensor signals generated by the sensor elements associated to this rotor blade.

Wind turbine having sensor elements mounted on rotor blades

A flap support mechanism for attachment of a flap to a rotor blade so as to permit angular displacement with respect thereto has a tension-torsion member disposed coaxial with a hinge axis of the flap One end at the blade root side of the tension-torsion member is secured to the rotor blade The other end at the blade tip side of the tension-torsion member is secured to the flap The tension-torsion member is placed such that it passes through a narrow cavity formed at the interior of the rotor blade Such construction permits smooth flap motion in spite of a large centrifugal force

Flap support mechanism and a flap-equipped rotor blade

A flight path display apparatus provided in a cockpit of an aircraft has a head-up display unit. An image combining panel of the head-up display unit displays a flight path image projected from projecting system which is superimposed on the outside view. Computing system for calculating the image to be projected to the image combining panel calculates a display position of the target flight path based on data from storage system in which predetermined flight paths are stored and from aircraft flight data measuring system for measuring the position and attitude of the aircraft. When the display position of the target flight path is outside a display area of the image combining panel, a target mark indicative of a direction toward the flight path from the center of the display area blinks on the image combining panel. With the above construction, a flight path display apparatus which allows a pilot to keep sight on a target flight path is realized.

Flight path indicated apparatus

PROBLEM TO BE SOLVED: To enable reducting driving load of flat whicle restraining the influence of centrifugal force acting on flap, by adding a lowering moment that matches with a rear edge lowering moment according to the size of centrifugal force that occurs during the rotation of blade. SOLUTION: A flap 2 is mounted so that a rear edge of a blade 1 is cut out, and it is supported around a hinge shaft 2a in free angular displacement. Moreover, an actuator 3 drives the flap 2 based on a signal from a flight control computer to yield a linear displacement of an exit rod 3a And at the interior of the blade 1, a detection mechanism of a centrifugal force 4 and a moment undoing application mechanism 10 are installed. As for the latter, a lowering motion of dead-weight 5 acts to the border raising direction of the flap 2, and the mechanism works as an undoing moment that matches with a rear edge lowering moment that is effected corresponding to the centrifugal force. In this way, the driving load of flap can be reduced.

Flap driving device and rotor blade

A flap drive device, wherein the displacements of output parts (35, 36) of a pair of piezo actuators (25, 26) disposed spanwise are increased by a displacement increasing mechanism (27) so as to largely swingably drive a swinging arm (28), a flap (22) which is mounted at the trailing edge of a blade (21) through a connection rod (30) mounted at the tip part of the rotating arm (28) is angularly driven in vertical direction, the displacement increasing mechanism (27) is provided with an eccentric shaft (40) obtained by integrally forming a first shaft (41) and a second shaft (42) having those axes eccentric to each other, the output part (35) is connected to the first shaft (41) and the output part (36) is connected to the second shaft (42), the swinging arm (28) is fixed to the eccentric shaft (40), and the output parts (35, 36) of the actuators (25, 26) are displaced in reverse phase so that the swinging arm (28) can be swung stably, whereby the swinging arm can be swung stably so as to stably drive the flap angularly.

Eiichi Yamakawa

Papers

Rotor blade flap driving apparatus

Flap support mechanism and a flap-equipped rotor blade

Flight path indicated apparatus

Flap driving device and rotor blade

Flap drive device of rotor blade