composites propeller

[Philippe]

Hello,

about carbon fiber blades:
what is the blades resistance of sand abrasion, rain and gravel impacts?

Is carbon fiber leading edge acceptable?
Is metalic leading edge mandatory?


thanks
--
Philippe Vessaire ҿӬ

[Dude]

I have seen metal edges as well as what looked like a urethane edge
(Sensenich).

If you wrap the leading edge CF may work, but I have never seen it
personally. I do know that the trailing edge is sometimes a seem, and it
can be brittle.



"Philippe" > wrote in message
...
> Hello,
>
> about carbon fiber blades:
> what is the blades resistance of sand abrasion, rain and gravel impacts?
>
> Is carbon fiber leading edge acceptable?
> Is metalic leading edge mandatory?
>
>
> thanks
> --
> Philippe Vessaire ҿӬ
>

[Badwater Bill]

On Mon, 19 Jul 2004 07:16:26 +0200, Philippe >
wrote:

>Hello,
>
>about carbon fiber blades:
>what is the blades resistance of sand abrasion, rain and gravel impacts?
>
>Is carbon fiber leading edge acceptable?
>Is metalic leading edge mandatory?
>
>
>thanks

Go to the Aero composites propeller web site and read about it. My
new prop uses an alloy that's harder than stainless. The alloy is a
nickel alloy. It's covered by a layer or two of carbon fabric and
glued in. The prop is all white and from the outside you'd never know
the leading edge was all metal. Of course I don't have any time on it
yet because I haven't built the airplane, but I'm told they work great
with small rock impacts.

BWB