The invention discloses contoured composite stringers. An aircraft incorporates a rounded-hat composite stringer connected to an inner side of the skin of the aircraft to form an elongate conduit thatdefines a conduit axis, where the conduit axis includes at least one curving portion. The rounded-hat composite stringer can be manufactured by constructing a lower forming die and an upper forming die, each forming die having a length and defining a curve along at least a portion of the length of the die, cutting a pre-cured flat composite charge dimensioned to form the rounded-hat composite stringer, pressing the flat composite charge between the lower and upper forming dies to shape the composite charge into a pre-formed stringer having an inner side between curved fillet portions, contacting a forming member against the inner side of the pre-formed stringer, applying radius fillers to the curved fillet portions of the pre-formed stringer, curing the pre-formed stringer, and removing the forming member from the cured stringer.
本申请公开了一种成形复合桁条。飞机包括连接到飞机的蒙皮内侧的圆帽状复合桁条以形成限定管道轴线的伸长管道,其中,管道轴线包括至少一个弯曲部分。该圆帽状复合桁条可通过以下步骤制造:构建下成型模具和上成型模具,每个成型模具具有一定长度并沿着模具长度的至少一部分限定曲线;将预固化的平坦复合装料切割成用于形成圆帽状复合桁条的尺寸;压制位于下成型模具和上成型模具之间的平坦复合装料,以使复合装料成形为具有介于弯曲倒角部分之间的内侧的预成型桁条;使成型构件与预成型桁条的内侧接触;向预成型桁条的弯曲倒角部分施加半径填料;使预成型桁条固化;并且从固化的桁条中移除成型构件。
Contoured composite stringers
成形复合桁条
2020-07-28
Patent
Electronic Resource
Chinese
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