Weight of Ice

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)

It isn't the weight, it is the lack of aerodynamic shape.




--
James H. Macklin
ATP,CFI,A&P

"gwengler" wrote in message
oups.com...
|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)
|

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?

Just that the change in shape of the airfoil is probably more important
than the weight.

Jose
--
"Never trust anything that can think for itself, if you can't see where
it keeps its brain." (chapter 10 of book 3 - Harry Potter).
for Email, make the obvious change in the address.

Just that the change in shape of the airfoil is probably more important
than the weight.

That is correct, but at some time, the weight itself becomes an issue,
too. I was just curious about the weight. There are some interesting
pictures here comparing a Cessna wing with a TKS equipped Cirrus wing:
http://www.ferryflights.org/Ferryflights-icing.htm

Gerd

You are long past dead when the weight becomes an issue.
At least in a little plane. The shape of the ice buildup can
be really ugly.

Worse problems: Shape of the wing drag
Tail plane stalling in landing
configuration.

Airplanes with the spar in the front seat tend to carry ice
better-- the ugly shape interferes less with the wing lift.

Trust me on this. Bill Hale BPPP instructor

gwengler wrote:
Just that the change in shape of the airfoil is probably more important
than the weight.

That is correct, but at some time, the weight itself becomes an issue,
too. I was just curious about the weight. There are some interesting
pictures here comparing a Cessna wing with a TKS equipped Cirrus wing:
http://www.ferryflights.org/Ferryflights-icing.htm

Gerd

Another swing at a dead horse...weight is a minor factor. If you could carry
another passenger, you could carry as much weight in the form of ice as in
your worst nightmares.

Bob Gardner

"gwengler" wrote in message
oups.com...
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)

Also, rime is full of air and may be 1/2 the weight of clear
ice. It is the spoiler effect of the ice that causes the
problem.


"Bob Gardner" wrote in message
. ..
| Another swing at a dead horse...weight is a minor factor.
If you could carry
| another passenger, you could carry as much weight in the
form of ice as in
| your worst nightmares.
|
| Bob Gardner
|
| "gwengler" wrote in message
|
oups.com...
| 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)
|
|
|

Bob Gardner wrote:
Another swing at a dead horse...weight is a minor factor. If you could carry
another passenger, you could carry as much weight in the form of ice as in
your worst nightmares.

I guess I'm not old enough. However, was there really ever a time when
students were taught that its the weight of the ice that kills?

-Robert, CFII

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

"Robert M. Gary" wrote in message
ups.com...

Bob Gardner wrote:
Another swing at a dead horse...weight is a minor factor. If you could
carry
another passenger, you could carry as much weight in the form of ice as
in
your worst nightmares.

I guess I'm not old enough. However, was there really ever a time when
students were taught that its the weight of the ice that kills?

-Robert, CFII

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)


Frost on the wing weighs next to nothing, probably a few ounces.