摘要:
A grid type element (1) of fiber composite structure, comprising a plurality of open polygonal cells (5) made of at least three core segments (16), said open polygonal cells (5) being stringed together alongside said ribs (16) to form a grid structure, and an essentially planar skin sheet (4), said essentially planar skin sheet (4) being attached unilaterally to the grid structure. A multipartite core (6) is provided, said core segments (6a, 6b, 6c) with respectively rectangular cross sections being formed of said multipartite core (6). Said at least three core segments (6a, 6b, 6c) are pivotable interconnected with at least two reduced cross sections (9) between two of said at least three core segments (6a, 6b, 6c) and at least one fiber composite layer (8, 7) is provided with said multipartite core (6), said at least one fiber composite layer (8, 7) sheathing at least partly said multipartite core (6). The invention is as well related to a method of manufacturing such grid type elements.
摘要:
The present invention is related to a compound helicopter (1) with a main rotor (13) providing lift, a pair of additional propulsion devices (14, 15) providing thrust and anti-torque and a fixed wing structure (16, 17, 26) on each side providing additional lift during horizontal cruise flight. The propulsion devices (14, 15) are arranged at each side of a fuselage body (2) with two tail booms (7, 8), one arranged at each side of said fuselage body (2), each of both tail booms (7, 8) having one of both propulsion devices (14, 15) arranged at its boom rear end (9). Each of the two tail booms (7, 8) houses an engine (21) and a drive shaft (24) driving the corresponding propulsion device (14, 15).
摘要:
The invention is related to a grid type fiber composite structure (1) comprising a grid of polygon cell modules (5) comprising at least three substantially u-shaped ribs made of fiber composite layer (8, 13) and a foam core (9) provided inside each cell module (5) for support of said u-shaped ribs. Said foam core (9) is along a base essentially in line with one of said flat cap sections (11, 12). At least one layer of strip (2, 3) is provided outside said flat cap sections (11, 12) and a skin sheet (4) is unilaterally attached to said cell modules (5) essentially in line with one of said flat cap sections (11, 12). The invention is as well related to a method of manufacturing such a grid type fiber composite structure (1).
摘要:
The invention relates to a compound helicopter (1) comprising a fuselage (2), at least one engine (14) and a main rotor (11) driven by said at least one engine (14). At least one pair of fixed wings are mounted in an essentially horizontal plane on a left hand and a right hand side of the fuselage (2) and horizontally oriented propulsion devices (12, 13) are mounted to each of said fixed wings, said fixed wings encompassing each a drive shaft (16) from said at least one engine (14). Each fixed wing comprises a lower main wing (18) and an upper secondary wing (19) being connected to each other within an interconnection region (22). The propulsion devices (12, 13) are arranged at said interconnection region (22) and said upper secondary wing (19) houses the drive shaft (16) from said at least one engine (14).