Abstract: Joining arrangement for the lateral boxes (11, 11?) of a horizontal tail stabilizer with a central tubular box and manufacturing method for said box. The boxes (11, 11?) are joined using an intermediate joining part (31) that comprises a central box (33, 63, 73), upper (35, 35?) and lower (37, 37?) lateral flaps, fitting plates (A) for the trimming device and fitting plates (B) for the pivoting device, the join being made with rivets between the skins (15, 15?; 17, 17?) of the lateral boxes (11, 11?) and said flaps (35; 35?; 37; 37?). The method for manufacturing the intermediate joining part (31) comprises steps to: a) Provide preforms suitable for forming said part (31); b) Form and cure the part (31) made from said preforms using an RTM method.

Abstract: A riveted union arrangement between parts of composite material in which, in the area of the union, at least one of the parts (11) is a strengthened directionally part whose lay-up comprises ply packets (13, 13?, 13?) with the optimum direction for carrying out the load transmission in the union inserted between at least one continuous ply (15) along said union area, where each of those ply packets (13, 13?, 13?) has a different length, so that said directionally strengthened part (11) be structured in the area of the union in stretches (17, 17?, 17?) with a different number of ply packets (13, 13?, 13?).

Abstract: Joining arrangement for the lateral boxes (11, 11?) of a horizontal tail stabiliser with a central tubular box and manufacturing method for said box. The boxes (11, 11?) are joined using an intermediate joining part (31) that comprises a central box (33, 63, 73), upper (35, 35?) and lower (37, 37?) lateral flaps, fitting plates (A) for the trimming device and fitting plates (B) for the pivoting device, the join being made with rivets between the skins (15, 15?; 17, 17?) of the lateral boxes (11, 11?) and said flaps (35; 35?; 37; 37?). The method for manufacturing the intermediate joining part (31) comprises steps to: a) Provide preforms suitable for forming said part (31); b) Form and cure the part (31) made from said preforms using an RTM method.

Abstract: Joining arrangement for two boxes (11, 11?) of composite material with an intermediate part (31) and method for manufacturing said intermediate part (31). The joint is effected using rivets between the skins (15, 15?; 17, 17?) of said boxes (11, 11?) and the upper and lower flanges (33, 35) of said T-shaped part (31). The manufacturing method includes the following steps: a) Providing two C-shaped preforms (41, 41?), configured such that their central sections (43, 43?) are parallel with one another and their upper and lower flanges (55, 55?; 57, 57?) are approximately parallel to the end zones of said skins (15, 15?; 17?, 15?); b) Providing two flat preforms (45, 47) to reinforce the flanges (35, 37); c) Forming and curing the part (31) made from said preforms (41, 41?, 45, 47) using an RTM method.