Good points to ponder. The electronics should be OK-- their temperature specs run
much, much colder that any sane (or insane) person would (or should).
In an alternate incarnation several years ago I did astrophotography. Built a large
telescope and made hour-long time exposures of stars, nebulae and galaxies in
mid-winter. The colder, the better. Many design considerations-- and demensional
tolerances-- were predicated on the "working temperature" (worst case, -20 degF) vs
room temperature. For example, aluminum has a large coefficient of expansion and has
a huge dimensional change as the temperature drops. It is possible to warp a mirror
or crack a lens in an aluminum cell. Press-fitted parts can fall apart if the
aluminum "shrinks" too much with temperature. The tube is a kevlar-carbon-epoxy
composite, and oddly, the dimensions-- length-- stays constant until +11 degF, when it
suddenly "shortens" by .020" (over 32 inches). Never have figured that one out.
It does matter.
--Bill
http://www.mindspring.com/~woharris/top.htm
On Thu, 30 Nov 2000 13:41:05 -0700 Greg Nuspel <[EMAIL PROTECTED]> wrote:
There is also the strength of materials to consider. Some things may get too
brittle for that hard frozen ground. Some tapes may lose their adhesive
qualities as well. Good time to be inside building.
----- Original Message -----
From: "Bob Rice" <[EMAIL PROTECTED]>
To: "'RCSE'" <[EMAIL PROTECTED]>
Sent: Thursday, November 30, 2000 1:28 PM
Subject: [RCSE] Winter Cold
> A more interesting question in regard to cold weather flying
>
> "What is the temperature specification for the electronics?"
>
> Bob Rice
> Rocky Mountain Soaring Assn.
> Denver CO USA
>
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