公开(公告)号：US20200148328A1

公开(公告)日：2020-05-14

申请号：US16680622

申请日：2019-11-12

Applicant: LEONARDO S.p.A.

Inventor： Gianni IAGULLI ,  Marco RAFFONE ,  Alberto RUSSOLILLO ,  Tommaso NANULA ,  Giuseppe TOTARO

IPC: B64C3/26 ,  B64C3/20 ,  B64C3/18

Abstract: A method for manufacturing a wing box for aircraft comprises the steps of arranging, on a curing surface, a first panel of composite material, alternately arranging, on the first panel, along a transverse direction, a rib of non-polymerized composite material and a tool comprising a central part, a bottom part and a top part, wherein the central part of each tool is interposed between said bottom part and the top part and may be extracted in a transverse direction, arranging a second panel of composite material by putting said second panel in contact with the flanges of each rib, pulling out the central part of each tool along the transverse direction and removing the top part and the bottom part of each tool, and subjecting the first panel, the second panel, and each rib to a curing process in autoclave with vacuum bag.

公开(公告)号：US20230382561A1

公开(公告)日：2023-11-30

申请号：US18034112

申请日：2021-10-27

Applicant: LEONARDO S.P.A.

Inventor： Gianni IAGULLI ,  Giuseppe TOTARO ,  Marco RAFFONE ,  Michele FRASCA

IPC: B64F5/10 ,  B64C1/06 ,  B29C70/54 ,  B29C70/76 ,  B29C70/38 ,  B29C70/44

CPC classification number: B64F5/10 ,  B64C1/064 ,  B29C70/545 ,  B29C70/543 ,  B29C70/763 ,  B29C70/38 ,  B29C70/44 ,  B29L2031/3076

Abstract: A method for manufacturing a panel for an aircraft is provided. The method includes arranging, on a curing surface, a skin of pre-preg composite material, arranging a plurality of pre-formed, uncured composite stringers, each having an open cross section with a web and a base transverse to each other so that a first base portion protrudes toward a first side and a second base portion protrudes toward a second side, arranging the stringers on the skin with the base in contact with the skin, arranging, on each stringer, a respective first mandrel to completely cover the first base portion and a respective second mandrel to completely cover the second base portion, and having the skin and the stringers undergo a co-curing process in autoclave with vacuum bag.

公开(公告)号：US20200147947A1

公开(公告)日：2020-05-14

申请号：US16680863

申请日：2019-11-12

Applicant: LEONARDO S.p.A.

Inventor： Gianni IAGULLI ,  Marco RAFFONE ,  Alberto RUSSOLILLO ,  Tommaso NANULA ,  Giuseppe TOTARO

IPC: B32B37/00 ,  B64F5/10 ,  B64C3/18 ,  B64C3/26 ,  B32B3/08 ,  B32B37/10 ,  B32B37/12 ,  B32B7/12

Abstract: A method for manufacturing a wing-box for aircraft comprises: arranging, on a curing surface, a first panel of composite material comprising a skin a plurality of longitudinal stringers, and arranging, on each stringer, a caul plate; arranging, on the first panel, pluralities of support inserts so that each support insert rests on a respective caul plate, and on the skin of the first panel, and arranging, on the first panel, a plurality of ribs of non-polymerized composite material, each rib comprising a plate, a first pair of flanges and a second pair of flanges arranged at opposed ends of the plate, and having openings on an edge of the plate, by placing the respective first pair of flanges on the first panel and the respective plurality of openings on the plurality of support inserts, and having the first panel and the plurality of ribs undergo a curing process in autoclave with vacuum bag.