Objective
Project objectives
The project concerns the design, prototype production, laboratory testing and field testing of a windturbine rotor in the 46-50 m diameter range or even bigger. The special design features are a low weight blade, reduced tower trust and minimized noise emission. A test blade will be built to be laboratory tested, static as well as in fatigue at RISØ. A test set will be built to do a field test on a commercial Nordtank windturbine. During the field test loads, noise and power will be measured.
Technical approach
A new Delft University DU95-W-180 cross section will be chosen together with the well known DU25 sections. These cross sections combine a desired thick cross section with aerodynamic desirable properties such as high lift to drag ratio and reduced sensitivity for nose roughness.
The special airfoil was designed and windtunnel tested for lift over drag ratios of at least 130 at the design Reynolds number of 3.0 * 106. To reduce peak loads the maximum lift coefficient is around 1.25.
With the ECN computer code Bladeopt, the blade geometry will be generated. This code optimizes the blade geometry for maximum annual yield and lowest tower trust. With the FOCUS computer codes the structural blade design will be made. The structure and materials will be based on the standard Rotorline production method with fibre-glass polyester.
One blade will be built for laboratory strength testing at RISØ. Successively a field test on a turbine will be performed to measure the power curve, loads and noise emission.
Expected achievement and exploitation
The blade should have an annual output of a least 1250 Wh/m2 aerodynamically in a wind class II climate. For a 50 m diameter rotor this gives an aerodynamic annual yield of 2.45 Gwh.
The structural rotorblade weight should be less than 3.7 kg per m2 area, thus reducing turbine loads and blade costs. A 50 m diameter blade would weigh about 2400 kg for a bladed rotor.
The blade is expected to become commercially available at the beginning of 1998.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
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Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
1704 RN Heerhugowaard
Netherlands
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.