Abstract: A shaped material (1, 1?), for example a disk for a disk brake, preferably a ventilated disk, includes a plurality of layers of material (6) in a spiral shape, overlapping along a development axis (X). Each layer of material (6) it is formed by a fabric (2) predominantly or exclusively made of carbon fibres (8), at least part of the layers being impregnated by an impregnating agent. A method is for the manufacture of a shaped material.

Abstract: Shaped material (1), in particular a disc for a disc brake includes layers (2, 4, 6) of carbon fibers stacked in a construction direction (X). Each layer (2, 4, 6) has segments (8, 10) placed side by side and joined together to form the layer, the segments of a layer (2, 4, 6) include radial segments (8) and transverse segments (10). In each layer (2, 4, 6) of carbon fibers, the number of transverse segments (10) is greater than the number of radial segments (8). A method manufactures a shaped material.

Abstract: A shaped material (1, 1?), for example a disk for a disk brake, preferably a ventilated disk, includes a plurality of layers of material (6) in a spiral shape, overlapping along a development axis (X). Each layer of material (6) it is formed by a fabric (2) predominantly or exclusively made of carbon fibres (8), at least part of the layers being impregnated by an impregnating agent. A method is for the manufacture of a shaped material.

Abstract: Shaped material (1), in particular a disc for a disc brake includes layers (2, 4, 6) of carbon fibers stacked in a construction direction (X). Each layer (2, 4, 6) has segments (8, 10) placed side by side and joined together to form the layer, the segments of a layer (2, 4, 6) include radial segments (8) and transverse segments (10). In each layer (2, 4, 6) of carbon fibers, the number of transverse segments (10) is greater than the number of radial segments (8). A method manufactures a shaped material.

Abstract: A lightning suppression system comprising a directional coupler, a quarter-wavelength stub, a first cylindrical capacitor, a second cylindrical capacitor and a lightning suppression circuit. Each of the cylindrical capacitors has an inner conductor element, an outer conductive tube and a dielectric material. Direction coupler acts to block direct current and low frequency signals from passing therethrough. The quarter-wavelength stub comprises a helicoid and acts to reflect radio frequency signals back to the transmission line while allowing direct current and low frequency signals to flow therethrough. First cylindrical capacitor and second cylindrical capacitor combine to form a low pass filter which allows direct current and low frequency signals to flow through while blocking other signals. The lightning suppression circuit suppresses high voltage direct current and low frequency signals such as those produced by near lightning strikes.

Abstract: A method for increasing the directivity and adaptation of directive microwave couplers formed of two spaced apart lines, in which the length of each line is reduced to a value of less than one quarter of the operating wavelength. Capacitance is added to the coupler to counter the reduction of capacitance resulting from the shortened lines. The capacitance is added by: (1) increasing the surface area of the shortened lines by adding lateral pads; and (2) providing a dielectric bridge across the pads.