62results about How to "Reduce design load" patented technology

A horizontal axis wind turbine includes: a rotor having a hub and at least two or more blades; a nacelle for pivotally supporting the rotor through a rotating shaft connected to the hub; a tower for supporting the nacelle; and an independent pitch control unit capable of independently controlling pitch angles of the blades, respectively, wherein the independent pitch control units control the pitch angles so that all the blades are made in a full feather position in case of a wind speed not less than a predetermined value, and subsequently controls the pitch angles of the respective blades so as to be sequentially reversed one by one, and further subsequently, carries out control so that the wind turbine idles in an all-blade negative feather position where the pitch angles of all the blades are reversed.

A multiplexed torque brake (MTB) system for preventing the accumulation of torsional forces at a center drive and thereby significantly reducing the design load requirements for trough frames of a corresponding solar concentrator assembly (SCA). In one embodiment, an MTB system for an SCA having a plurality of solar reflector frames spaced along a length of the SCA includes a plurality of brake mechanisms arranged at locations spaced apart from each other along the length of the SCA, each of the brake mechanisms coupled to a corresponding one of a plurality of supporting pylons and configured to constrain the solar reflector frames from rotating when subjected to torsional loads, the brake mechanisms adapted to transfer the torsional loads to the corresponding supporting pylons.

A computer implemented method, apparatus, and computer usable program product for symmetric and anti-symmetric control of aircraft flight control surfaces to reduce wing-body loads. Commands are sent to symmetrically deploy outboard control surfaces to shift wing air-loads inboard based on airplane state and speed brake deployment. Surface rate retraction on a wing with peak loads is limited to reduce maximum loads due to wheel checkback accompanied by utilization of opposite wing control surfaces to retain roll characteristics. Airloads are shifted inboard on a swept wing to move the center of pressure forward, thereby reducing the tail load required to perform a positive gravity maneuver. In a negative gravity maneuver, speed brakes are retracted, thereby reducing the positive tail load and reducing the aft body design loads. High gain feedback commands are filtered from wing structural modes above one hertz by a set of linear and non-linear filters.

Disclosed a horizontal axis wind turbine including: a rotor; a nacelle; a tower; an independent pitch control device; and a yaw control device, wherein the horizontal axis wind turbine is an up-wind type one including a waiting mode, wherein (1) the independent pitch control device performs a first step of changing all the blades to be in feathering states when the wind speed exceeds the predetermined value, a second step of changing the blades to be in reverse feathering states one by one sequentially, and a third step of holding all the blades in the reverse feathering states, and (2) the yaw control device controls a yaw brake to take a braking value allowing the yaw rotation when the wind speed exceeds the predetermined value, wherein the rotor is allowed to swing a leeward of the tower by executing the control operations (1) and (2) as the waiting mode.

A complex-operation input device having an operable knob held in a rotatable and slidable manner includes a rotation sensor that detects rotation of the operable knob on the basis of displacement of a second detected portion, and a slide sensor that detects sliding of the operable knob on the basis of displacement of a first detected portion. The direction in which the second detected portion moves with the sliding of the operable knob is substantially orthogonal to a rotation axis about which the operable knob rotates. The slide sensor is disposed such that, when the operable knob is slid, the slide sensor detects the sliding before the rotation sensor detects the displacement of the second detected portion.

A non-aqueous electrolyte secondary battery includes an electrode assembly formed by winding positive and negative electrodes, and an insulating layer together. Each of the electrodes has a core sheet and mixture layers formed on both sides of the sheet. The insulating layer electrically insulates the electrodes. At least one of the electrodes includes a core-exposed portion continuous parallel to the winding direction. Each of the mixture layers has an inclined weight region where the amount of mixture per unit area decreases toward the core-exposed portion, and a constant weight region in which the amount of mixture per unit area is constant. The inclined weight region has a width of not more than 0.2 of the width of the mixture layers and has an average mixture density of not less than 40% and not more than 99% of the mixture density of the constant weight region.

An electrical cable has a plurality of generally rectangular cross-section conductors superposed in a stack, the stack surrounded by a polymer jacket. The stack may be provided with a lubrication layer provided between at least two of the conductors. Conductors of the stack may have a thickness that is greater proximate the middle of the stack than at the top and bottom of the stack and / or a width that is less at the top and the bottom than at the middle. Further stacks may also be provided parallel and coplanar with the first stack, also surrounded by the polymer jacket.

A pad return spring for a caliper body. The caliper body has an elongated element connecting bridge connecting a first elongated wheel-side element to a second elongated wheel-side element and having a middle connecting bridge defining an outer middle bridge side, an inner middle bridge side, a middle bridge disc inlet side, and an opposite middle bridge disc outlet side. The pad return spring has a first and a second pad retraction elements, each defining a middle stretch, a first side stretch influencing the first pad, and an opposite second side stretch influencing the second pad to move the first and second pads away from the first and second braking surfaces at the end of a braking action, and an elongated connecting element connecting the first and second pad retraction elements to each other, and an anchoring device to removably restrain the pad return spring to the middle connecting bridge.

A pad return spring (50) for a disc brake caliper body adapted to straddle a brake disc, said brake disc comprising a first braking surface of brake disc and an opposite second braking surface of brake disc, said caliper body comprising: a first elongated wheel-side element comprising an outer caliper side of first elongated element and an inner caliper side of first elongated element, wherein said outer caliper side of first elongated element is adapted to face a vehicle wheel and wherein at least one portion of the inner caliper side of first elongated element is adapted to face said first braking surface of brake disc by means of a first pad); a second elongated opposite wheel-side element comprising an outer caliper side of second elongated element and an inner caliper side of second elongated element, wherein at least one portion of the inner caliper side of second elongated element is adapted to face said second braking surface of brake disc by means of a second opposite pad; - said first elongated wheel-side element comprises at least one thrust means seat adapted to receive thrust means which are suitable for influencing the first pad against said first braking surface of brake disc; at least said second elongated opposite wheel-side element comprises at least two portions each defining a connecting seat adapted to connect the caliper body to a support element for supporting the caliper on the vehicle; said caliper body comprises at least one elongated element connecting bridge adapted to connect said first elongated wheel-side element to said second elongated opposite wheel-side element so as to be suitable for straddling said brake disc; said at least one elongated element connecting bridge comprises a middle connecting bridge which extends according to the axial direction and defines an outer middle bridge side externally facing the caliper body, an inner middle bridge side internally facing the caliper body, opposite to the outer middle bridge side, a middle bridge disc inlet side, a middle bridge disc outlet side, opposite to the middle bridge disc inlet side; said pad return spring (50) comprising a first pad retraction element (61) and a second pad retraction element (62), each of said first pad retraction element (61) and second pad retraction element (62) defining a middle stretch (58 59), a first side stretch (54, 55) adapted to influence said first pad, and an opposite second side stretch (56, 57) adapted to influence said second pad to move said first pad and said second opposite pad away from said first braking surface of brake disc and from said opposite second braking surface of brake disc at the end of a braking action; wherein said first pad retraction element (61) and said second pad retraction element (62) are shaped as a folded band and consist of a plurality of overlapping sandwiched sheet layers (61' 62'); said spring comprising an elongated connecting element (63) which connects the first pad retraction element (61) and the second pad retraction element (62) to each other at said middle stretch (58, 59); said spring comprising anchoring means (51, 52, 53) adapted to removably restrain said pad return spring (50) to said middle connecting bridge (18).