Except for integral fuel tanks, where warm fuel is in
contact with the skin, the aluminum skin will be below
freezing in a matter of less than a minute. The warm hanger
will have the airplane ice free and all the weep holes
should drain, but if there is snow falling, spray it with
glycol with a rich enough mixture to keep the surface ice
free for the expected take-off delay.

Even better, don't take-off in the blizzard, wait for the
snow to stop and the taxi and runways to be plowed.



"Peter R." wrote in message
...
|A question for those of you more adept at chemistry/physics
than I: How
| fast does the aluminum skin of the standard single engine
GA aircraft take
| to cool to surrounding air temperatures? For example, how
long would it
| take for the skin to cool from a heated hangar at 65
degrees F to outside
| air at 20 degrees F?
|
| This is my first winter where my airplane sits at my
destination airport
| (Buffalo, NY) all week in a heated hangar. The problem I
just inherited
| is that if I desire to depart during a lake effect
snowfall event, falling
| snow could melt on the wings and fuselage and then turn to
ice.
|
| --
| Peter