Patent ID: 7851040
Filing Date: 2010-12-14
Classification: B29C,B29K,B64C,Y02T,Y10T

Abstract:
1. A method for making a balanced laminate composite structure comprised of a central part having a longitudinal axis coincident with a central axis of the composite structure and establishing a central lamination junction zone defining a central coordinate system COORD C, and left and right component parts joined to the central part at the central lamination zone and having respective longitudinal axes establishing equal angles with respect to the longitudinal axis of the central junction zone and establishing left and right lamination zones defining left and right coordinate systems COORD L and COORD R, respectively, the method comprising: (i) laying up 0° composite material plies relative to the central coordinate system COORD C of the central lamination junction zone so as to achieve +(90°−θ°/2) plies relative to the left and right coordinate systems COORD L and COORD R of the left and right two parts, respectively, and (ii) laying up +(180°−θ°) and −(180°−θ°) plies relative to the central coordinate system COORD C of the central laminate junction zone so as to achieve −(90°−θ°/2) plies relative to the left and right coordinate systems COORD L and COORD R of the left and right parts, respectively.