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The Windflow turbine design has been optimized for New Zealand conditions. These conditions demand tolerance for strong gusty winds, and yet relative light weight for ease of installation in our steep remote hills. Self Teetering Rotor Wind is not steady, and gusts do not tend to occur uniformly over the entire rotor disk. This can cause excessive torsional loads on the turbine, for example if a strong gust occurs on the upper half of the rotor only. In the Windflow design the two rotor blades are rigidly attached to each other at the hub, but are allowed some play in the connection from the hub to the main shaft. This allows the ‘disk’ formed by the spinning blades to deflect in the event of asymmetric gusts. More clever still, this deflection causes the pitch of each blade to adjust slightly, somewhat counteracting the gust.
| Vibration Analysis of the Windflow Turbine Gearbox |
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