Weight of Ice

Bob Gardner wrote:
Maybe I'm not old enough either. I can't remember weight as ever having been
a consideration. Those leading edge profiles showing clear, rime, and mixed
have been around since the early 60s to my personal knowledge.

HOWEVER, I have a book from the 1920s that talks about "ice barnacles."

Bob

I wondered if perhaps some of the ultra low wing loading of the older
planes (like the J-3) didn't have nearly the aerodynamic effect as a
result of ice as a higher loading wing today does. Essentially, perhaps
today we have a lack of excess lift available?
In my younger days, I flew the J-3 after only doing a 1/2 ass job of
defrosting it. I never noticed any problems. Just thinking out loud.

-Robert

Other problems with the weight of ice that accumulates on
the ground and is not completely removed... I was shown
pictures of a CE 210 [old, strut braced] which crashed near
Tulsa about 30 years ago. It seems that all the ice was
removed except for some small amounts on the ailerons. When
the plane go to cruise speed flutter began and it wrenched
both out wing panels into scrap metal.



"Robert M. Gary" wrote in message
ps.com...
|
| Bob Gardner wrote:
| Maybe I'm not old enough either. I can't remember weight
as ever having been
| a consideration. Those leading edge profiles showing
clear, rime, and mixed
| have been around since the early 60s to my personal
knowledge.
|
| HOWEVER, I have a book from the 1920s that talks about
"ice barnacles."
|
| Bob
|
| I wondered if perhaps some of the ultra low wing loading
of the older
| planes (like the J-3) didn't have nearly the aerodynamic
effect as a
| result of ice as a higher loading wing today does.
Essentially, perhaps
| today we have a lack of excess lift available?
| In my younger days, I flew the J-3 after only doing a 1/2
ass job of
| defrosting it. I never noticed any problems. Just thinking
out loud.
|
| -Robert
|

gwengler wrote:
I roughly calculated that the weight of 1 in. of ice on all forward
surfaces on my T182 (fixed gear) is about 250 lbs. Anyone cares to
comment on this?
Gerd (ATPL)


Get rid of that fat ass mother-in-law in the back seat and
you can compensate for icing it looks like

More than just the weight is involved. Remember, ice can kill you four
ways:


1. Ice DECREASES LIFT by changing shape of airfoil
2. Ice DECREASES THRUST by accumulating on your props or turbine
inlets
3. Ice INCREASES WEIGHT, for obvious reasons.
4. Ice INCREASES DRAG, parasitic.

Bad, bad, bad, and bad.

Stay out of it, and if you get in, get out while you still have
controllability and climb capability.

But of course, you knew that



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