Alan Petrillo wrote:
Morgans wrote:

wrote


The other possibility would be to stick a radiator in each wing root
and funnel ram air through the radiator into the wing cavity. The
warmed air would then be the heating element. I wonder if that would be
sufficient to prevent gelling and also provide some minor wing heat
without all the complexity.


You really need to take some physics and thermodynamics. Right now, you
need to buy a vowel.

I'm only kinda kidding. What you are proposing isn't being done, because it
won't work. Sorry.

Well, again, has anyone done the engineering on this?

As I understand it, what he's talking about is simply using underwing
radiators and ducting the exhaust air from the radiators through the
interior of the wings before allowing it to flow out of exhaust ports.
I can see how it might work, the question is how well it would work.
Would it provide enough heat to the wing skin to keep ice from adhering
to it?


AP

Thanks Allan,

One of the remaining issues of course is that it is my understanding
that it typically isn't the wing ice that kills you. It is the ice on
the elevator and horizontal stab. Doh! You end up trimming out the
effect of the ice until there is no more trim left and... Bonzai!

I only have 250 hours, and have never experienced icing personally.

Given that cabin heaters are only a foot or two of exhaust pipe, I to
have to second guess Jims assessment of the situation. Though I do
remember being a little frosty at 10K MSL in the winter in my M20E, I
did at least get _some_ heat.

1. With a liquid cooled engine you _have_ to have an auxillary heat
sync of some kind.

2. If waste heat can be used to improve safety or performance it should
be.

3. Using biodiesel presents additional safety hazards related
specifically to loss of thermal energy that _have_ to be engineered out
for the fuel to become suitable for aviation use.

From where I stand all of that kind of goes together.

Wait... let me get my rain coat. I hear Jim comming.

-Matt