ednesday, May 27, 2009 2:55 PM
Subject: Re: [WISPA] (topic change) sort of tower failure...
> Ah. Was the generator shaft spinning freely during the last two
> windstorms? A stalled (or nearly stalled ~ 15 RPM) rotor will present a
> much higher wind load to the tower than a freewheeling one
ssage -
> From: "Patrick Shoemaker"
> To: "WISPA General List"
> Sent: Wednesday, May 27, 2009 1:51 PM
> Subject: Re: [WISPA] (topic change) sort of tower failure...
>
>
>> Was the generator shaft seized? Variable pitch blades locked at the
>> shall
tting it back up about 60% stronger. Well, when it
gets back, that is.
- Original Message -
From: "Patrick Shoemaker"
To: "WISPA General List"
Sent: Wednesday, May 27, 2009 1:51 PM
Subject: Re: [WISPA] (topic change) sort of
Was the generator shaft seized? Variable pitch blades locked at the
shallowest position?
Patrick Shoemaker
Vector Data Systems LLC
shoemak...@vectordatasystems.com
office: (301) 358-1690 x36
http://www.vectordatasystems.com
rea...@muddyfrogwater.us wrote:
> Ok, so, two weeks ago, after having
Ok, so, two weeks ago, after having stood for 4.5 years, through 2, and I
mean TWO "century" wind storms, my generator tower failed on a very normal
normal windy spring day.
We took it the rest of the way down, cut it apart, looking for the cause of
failure.
And found none. No rust, no break
