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Rotorblades for large wind turbines

Abstract

Details of the design work and manufacturing process for a running prototype production of 25 m long composite rotor blades for wind energy generators are presented. The blades are of the 'integrated spar design' type and consist of a glass fiber skin and a PVC core. A computer program (and its action tree) is used for the analysis of the multi-connected hybrid cross-section, in order to achieve optimal design specifications. Four tools are needed for the production of two blade types, including two molds, and milling, cutting and drilling jigs. The manufacturing processes for the molds, jigs and blades are discussed in detail. The final acceptance of the blade is based on a static test where the flexibility of the blade is checked by magnitude of load and deflection, and a dynamic test evaluating the natural frequencies in bending and torsion.
Publication Date:
Jan 01, 1981
Product Type:
Book
Reference Number:
EDB-83-004007
Resource Relation:
Conference: 7. European rotorcraft and powered lift aircraft forum, Garmish-Partenkirchen, Germany, F.R., 8 Sep 1981
Subject:
17 WIND ENERGY; TURBINE BLADES; COMPUTER-AIDED DESIGN; FABRICATION; WIND TURBINES; CURING; DESIGN; FIBERGLASS; MOLDING MATERIALS; PVC; TESTING; CHLORINATED ALIPHATIC HYDROCARBONS; HALOGENATED ALIPHATIC HYDROCARBONS; MACHINERY; MATERIALS; ORGANIC CHLORINE COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC HALOGEN COMPOUNDS; ORGANIC POLYMERS; POLYMERS; POLYVINYLS; TURBINES; TURBOMACHINERY; 170602* - Wind Energy Engineering- Turbine Design & Operation
OSTI ID:
6759902
Country of Origin:
Germany
Language:
English
Submitting Site:
HEDB
Size:
Pages: 18
Announcement Date:

Citation Formats

Wackerle, P M, and Hahn, M. Rotorblades for large wind turbines. Germany: N. p., 1981. Web.
Wackerle, P M, & Hahn, M. Rotorblades for large wind turbines. Germany.
Wackerle, P M, and Hahn, M. 1981. "Rotorblades for large wind turbines." Germany.
@misc{etde_6759902,
title = {Rotorblades for large wind turbines}
author = {Wackerle, P M, and Hahn, M}
abstractNote = {Details of the design work and manufacturing process for a running prototype production of 25 m long composite rotor blades for wind energy generators are presented. The blades are of the 'integrated spar design' type and consist of a glass fiber skin and a PVC core. A computer program (and its action tree) is used for the analysis of the multi-connected hybrid cross-section, in order to achieve optimal design specifications. Four tools are needed for the production of two blade types, including two molds, and milling, cutting and drilling jigs. The manufacturing processes for the molds, jigs and blades are discussed in detail. The final acceptance of the blade is based on a static test where the flexibility of the blade is checked by magnitude of load and deflection, and a dynamic test evaluating the natural frequencies in bending and torsion.}
place = {Germany}
year = {1981}
month = {Jan}
}