Abstract: A method for making an aircraft brake disc includes: a first step of manufacturing a rotary disc preform for manufacturing a rotary disc and a fixing disc preform for manufacturing a fixing disc; and a second step of densifying the rotary disc preform such that density continuously increases from the center to the outside of the rotary disc and of densifying the fixing disc preform such that density continuously decreases from the center to the outside of the fixing disc.

Abstract: An apparatus for testing an aircraft brake disc includes: a base member having a shaft mount unit; a main shaft rotatably mounted on the shaft mount unit of the base member; a wheel assembly couple to the main shaft; a first wheel mount assembly that is disposed at a side from the base member to move in the radial direction of the wheel assembly; a first driving unit moving the first wheel mount assembly; a second wheel mount assembly that is disposed at the other side from the base member to move in the radial direction of the wheel assembly; a second driving unit moving the second wheel mount assembly; a motor assembly connected to a side of the main shaft and rotating the wheel assembly; and a first flywheel assembly separably coupled to the other side of the main shaft.

Abstract: A method of manufacturing a three dimension preform having high thermal conductivity includes: a first step of manufacturing a unidirectional carbon fabric from a heat resistant fiber; a second step of putting the unidirectional carbon fabric into an aqueous solution with carbon nanomaterials contained in a vessel; a third step of taking the unidirectional carbon fabric out of the vessel and then drying the unidirectional carbon fabric; a fourth step of repeating the second step and the third step; a fifth step of stacking the unidirectional carbon fabrics with web carbon fabrics, which are made of a heat resistant fiber, inserted between the unidirectional carbon fabrics; and a sixth step of punching the stacked unidirectional carbon fabrics and the web carbon fabrics with a needle.

Abstract: The present invention relates to a carbon-ceramic brake disc, and the present invention includes a plurality of heat dissipation holes formed in a frictional surface; a curved surface formed between the frictional surface and an inner surface of the hole dissipation hole; and a groove formed at the inner surface of the heat dissipation hole. According to the present invention, in a brake system, when brake pads press the frictional surfaces of the carbon-ceramic brake disc brake to generate braking force, frictional heat in the carbon-ceramic brake disc is effectively dissipated to the outside. That is, the carbon-ceramic brake disc is effectively cooled. Thus, the transferring of the frictional heat generated in the carbon-ceramic brake disc to a hat part is reduced, so that it is possible to minimize deformation of the carbon-ceramic brake disc and the hat part.