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Whisper H40 Data

Here's a graph of the Whisper H40 (formerly Whisper H900) behavior in terms of

revolutions per minute.

Here's a graph of the tip speed ratio during operation for the Whisper H40 (formerly

Whisper H900).  Tip speed ratio is the ratio between the speed of the blade tips to

the incoming wind speed.  A TSR of 10 means that the blades are spinning at 10 times

the velocity of the incoming wind.

Here's a sample Whisper H40 power curve.