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US 8,696,317 B2Granted
Wind turbine blade
AssigneeBlade Dynamics Limited
InventorPaul Rudling
Life of this patent
Estimating the term…
Abstract
A spar (30) for a wind turbine blade. The spar comprises a plurality (typically three or more) beams (33) arranged side-by-side. Each beam has a longitudinal web (32), a flange (31) at either longitudinal edge. The spar may be made up of a number of modules connected to one another primarily via overlapping shear webs.
Claims17
A modular wind turbine blade, comprising:
- a root at one end for connection to a hub,
- a spar extending from the root towards a tip at the opposite end, and
- at least two skin panels which are supported by the spar and which form a closed blade section, wherein the spar comprises a plurality of spar units arranged end to end along the length of the spar, and wherein the spar comprises a plurality of beams arranged side by side, each beam having at least one longitudinal web with a flange at either longitudinal edge, wherein the plurality of spar units are joined end to end by the plurality of beams of one spar unit being connected to the plurality of beams of the adjacent spar unit, and wherein the number of beams arranged side by side decreases towards the tip.
A modular spar for a wind turbine blade, the modular spar comprising:
- a plurality of spar units arranged end to end, wherein each spar unit comprises, at least in the region adjacent to an adjacent unit, a plurality of beams arranged side by side and a plurality of shear webs overlapping with the adjacent spar unit, the units being primarily connected together via the overlapping shear webs, and wherein the number of beams arranged side by side decreases towards a tip of the modular spar.
Dependencies are inferred from the claim text.