Re: [ATM] Mirror Lateral Supports

[Andy Saulietis <iss@pvtnetworks.net>]

Mike Byorick writes,


>Most interestingly, the mirror is laterally supported from the BACK
>surface.
>
>
>-A lateral force pad (invar) that is glued to the segment with a
>silicone RTV. It works for the lateral shear force from the support for
>the horizontal gravity component of the segment lateral weight.
>
>RTV is used (or proposed) both for attachment of the mirror to the axial
>support system (the 'cell') and to the lateral supports.  Maybe now
>those pesky slings can be tossed (slung?).

I see the priciple..but what is a 'lateral force pad'??
Sounds like there's some sort of actuator attached to the
bipods that pushes up un the CG plane of the mirror, the
amount of force being dependent on the elevation angle.

Also, the locations and geometry of the bi-pods were
determined by FEM analysis for that particular case
(the hex mirror segment).

Both of these seem to show that this technology is a bit
beyond that available to ATM's, so maybe the slings won't go away
after all?



>Mike Byorick
>SW New Mexico

I'm in the Sacramento mtns near Cloudcroft..where are you??


Andy Saulietis
ISS Enterprises
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