Composite structures with basic fibre reinforced elements are widely used in the design of aerospace structures. In 1967, the BO 105, a product of the former helicopter division of MBB, now Eurocopter Deutschland GmbH, flew for the first time. This innovative helicopter was equipped with the first serial “hingeless” rotor system. The fibre composite blades were attached to the head with the help of the “lug” element. This allowed the simple design of the rotor, without damper element. These “lug” elements were later also used for the attachment of liquid helium tanks to satellite structures, such as ISO and HERSCHEL, operating in the low temperature range for the scientific observation of the sky. The thermal conductivity could be minimized and thus the lifetime could be extended. In this paper several load introduction elements derived from the „lug” element are described. The stress situation due to the load transfer is quite complicated and has to be calculated by a detailed analysis. The mechanical behaviour of composite materials allows the design of outstanding basic structural elements such as plates and shells having a high range of different stiffness, in plane and out of plane. These elements are often used for the attachment of vibration absorbing structures. In this paper several applications of anisotropic structures are described and possible use is shown. Furthermore outstanding possibilities of designing with composites will allow us to integrate electrical elements into the structures to improve their abilities.
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- Design of Basic Structural Composite Elements
- Springer Berlin Heidelberg
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