PSN-L Email List Message

Subject: Position of magnetic damper relative to pivot
From: "Robert O. Green" rog@..........
Date: Sun, 31 May 2009 09:14:26 -0700


He Geoffrey,

I understand one wants the magnetic damping MD effect to be about a 10th 
reduction in intensity for consecutive cycles of the boom.

It seems you can have a strong MD close to the pivot or a weak MD near 
the coil end to achieve this damping effect.

With a fixed strength MD one can tune the intensity reduction by 
shifting the position of the MD along the boom.

Are there other good reasons for the position of the MD.

Rob

Geoffrey wrote:
> Isn't the velocity difference greater the further you get
> from the center of a circle on a lever arm
> and that would mean the closer to the very end
> the better the signal and the damping ?
> The free end I mean and not the fulcrum end.
> Sort of like the cause of the coreolis pseudo force
> but not exactly ? It is interesting the mass stays still
> while the fulcrum moves yet the differences are at the end
> and that's where it matters for sensing things.
>
> might be nice to have a lever 32 miles long.
>
> possibly a beam of light ( laser pointer ) makes a better lever.
>
> This ranger guy showed me how he uses a laser pointer
> to detect enemy movement after dark in the jungle.
> I was thinking seismometer rather than enemies tho.
> He also showed me how to break someone's knee with a side
> kick but I'm really not interested in the violence
> of humans but the violence of gods or devils that
> creates earthquakes. Such wonderful people
> here in the prison town called Apache Junction AZ.
> They (City Council Members) seem to be a greater danger than anything
> mother nature can throw ones way.
> I'm thinking of the possibility of visiting Socrates one day.
> Such a wonderful septic EARTH we live on in the Goldie locks zone.
> :-)
> geoff
>
>
>
>
> ----- Original Message ----- From: "Robert O. Green" 
> To: 
> Sent: Sunday, May 31, 2009 7:08 AM
> Subject: optimal position of magnetic dampter
>
>
>> Chris et al.,
>>
>> What is the thinking on the optimal position of the magnetic damper 
>> (MD) along the lower boom?
>>
>> It seem by shifting the MD position towards or away from the lower 
>> pivot one can tune the damping strength.
>>
>> Rob
>>
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