Wind turbine blade planforms with twisted and tapered tips

The present invention relates to wind turbine blade planforms with twisted and tapered tips. More particularly, a blade (10) for a wind turbine (2) includes a total backward twist (shown as figure 6, paragraghs 31 to 32) of between approximately 6 degrees and approximately 15 degrees between an oute...

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Bibliographische Detailangaben
Hauptverfasser:	HERR STEFAN, GERBER BRANDON S, STANDISH KEVIN J, KINZIE KEVIN W, KOEGLER KLAUS, PETITJEAN BENOIT P
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING HEATING LIGHTING MACHINES OR ENGINES FOR LIQUIDS MECHANICAL ENGINEERING OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR PRODUCING MECHANICAL POWER WEAPONS WIND MOTORS WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
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Beschreibung
Zusammenfassung:	The present invention relates to wind turbine blade planforms with twisted and tapered tips. More particularly, a blade (10) for a wind turbine (2) includes a total backward twist (shown as figure 6, paragraghs 31 to 32) of between approximately 6 degrees and approximately 15 degrees between an outer approximately 1 percent to 10 percent of a rotor radius of the blade; and an approximate planform distribution (shown as figure 10, paragraghs 40 to 41), where ''r/R'' is an approximate normalized distance outward from a center of rotation of the blade along a span of the blade; and ''c/R(LE)'' and ''c/R(TE)'' are approximate relative positions of a leading (LE) and trailing edge (TE) of a chord ''c'' expressed as a percentage of a distance outward from the center of rotation at each r/R.