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    Principle of rotor design for horizontal axis wind turbines
    (2006) Vardar A.; Eker B.
    To increase the efficiency of wind turbines, rotor planning principles are very important for wind turbines with horizontal axis. It is not possible to expect the maximum efficiency from a wind turbine that is installed without doing the optimization processes. At this point, rotor blades aerodynamic features are very important. It is necessary to put forward the power value that can be obtained from rotor blades. It is possible to conduct power tests indoors or under natural conditions. But in both methods, real rotor blades have to be produced. And this means cost. For this reason, first miniature blades can be produced and the tests can be conducted on these miniature rotor blades. This, along with theoretic studies, will help us to have a good opinion. © 2006 Asian Network for Scientific Information.
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    Using of composite material in wind turbine blades
    (Asian Network for Scientific Information, 2006) Eker B.; Akdo?an A.; Vardar A.
    The turbines manufactured from the mid 1980s until the late 1990s were mainly constructed using standard components. After that period, special components started being designed and manufactured for turbine use only. One of the best solutions is using composite materials in wind turbine. Most composites are made up of just two materials. One material (the matrix or binder) binds together a cluster of fibers or the fragments of a much stronger material and the second material (the reinforcement) surrounds these fibers or fragment. Nowadays, many wind turbine manufacturers are taking a big interest in composite materials which many researcher of wind technology see as the materials of the future. The main concern is to get the cost down, so that composites can be used in products and applications which at the present time don't justify the cost. At the same time they want to improve the performance of the composite, such as making them more resistant to impact. In this article the using of composite material in wind turbine blades were investigated. The research was based on the theories material science and wind technology. And also some practical results were exhibited and explained. © 2006 Asian Network for Scientific Information.