Title:
DEVICE FOR SECURING OVERLAPPED COUPLING ELEMENTS
Document Type and Number:
Japanese Patent JPS5617796
Kind Code:
A
Abstract:
The wings of a hingeless helicopter rotor are secured to the head of the rotor by connecting elements of fiber compound materials. Each connecting element has at least two outer layers of fiber compound materials and an intermediate layer of +/- beta -fiber compound materials between the outer layers. The intermediate layer is bonded to the outer layers by a suitable adhesive. The intermediate layer takes up the central portion of the securing flange of the rotor head and its axial thickness increases radially inwardly. The intermediate layer has four side lobes which extend laterally out of the confines of the outer layers. These side lobes are connected by bolts to the rotor head. This structure provides a strong connection in which the outer layers are not weakened. Effects of the lead-lag movement of the rotor wings and of any torsion of the connecting elements are minimized and the fictitious hinges are located close to the rotational axis even within the zone defined by the rotor head flange.
Inventors:
KURAUSU BURUNSHIYU
FURANTSU NOOBUAKU
FURANTSU NOOBUAKU
Application Number:
JP10042180A
Publication Date:
February 19, 1981
Filing Date:
July 22, 1980
Export Citation:
Assignee:
MESSERSCHMITT BOELKOW BLOHM
International Classes:
B64C27/35; B64C27/33; (IPC1-7): B64C27/48
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