Autorotation

"The OTHER Kevin in San Diego" skiddz "AT" adelphia "DOT" net wrote in
message ...
On Thu, 8 Sep 2005 16:35:41 +0100, "Beav"
wrote:


"Steve R" wrote in message
.. .
Which angle are you asking for?

Do you want to know what the blades actual AoA (angle of attack) is or
do
you want to know what the blades angle of incidence is?

My guess would be he wants the angle as measured on the ground like we'd
do
on an RC heli. So incidence, not AoA.

I'm willing to bet he's an RC flyer too coz they're the only ones who want
to know that info :-))

As it happens, I'd be interested in knowing what the incidence angle is
with
the lever fully lowered and the heli sat on the floor. I know it's nothing
like as negative as we can usefully make use of on RC machines, but
there's
probably an optimum static setting for each type of heli.

I'd be interested in seeing this data measured at various points along
the blade to get an idea of the twist various manufacturers employ to
avoid tip stalls...

I'm under the illusion that a twisted blade is twisted to allow lift to be
generated more evenly along the blade as opposed to most of it being created
by the outer 1/3rd. Could be ******** mind, but it makes sense to me.


--
Beav

Reply to "beavis dot original at ntlworld dot com" (with the obvious
changes)