Hi,
How does the use of AS504* wings affect CG range.
The wings having a different profile, presumably have a different centre
of lift - my guess from looking at the profiles is that the centre of lift
moves aft.
So what is the impact on CG and is there a different practical CG range
for aircraf
This is true, you have to move the center aft to get more laminar flow.
Jeff vikensairfoil on the VK-30 had laminar flow back to 70% chord and it
would make the KR-1 more stable.
Sincerely
Jim
On Mon, 7 Nov 2005 14:56:59 - (GMT) writes:
> Hi,
>
> How does the use of AS504* wings affect CG ran
> How does the use of AS504* wings affect CG range.
It's close enough to the old wing that you don't need to worry about it.
There are several flying now, with no problems. I don't remember the exact
location of the center of lift, but if I can find it I'll send it to you.
Mark Langford, Hunts
The center of lift of any airfoil, will move around
with changes in AoA, it's not a fixed point on the
airfoil.
Designers typically use the term Aerodynamic Center
which is a fixed point on the wing, usually the C/4,
or 1/4 chord point when doing initial design work.
Denny ...
--- Mark Langford
Ahh, except for symmetrical airfoils from what I
understand. Apparently it never changes.
> The center of lift of any airfoil, will move around
> with changes in AoA, it's not a fixed point on the
> airfoil.
-
Matthew Elder
Orangeburg, SC
http:
I would like to see that reference, I would be
surprised if the center of lift didn't move some with
changes in AoA.
Denny ...
--- Matthew Elder wrote:
>
> Ahh, except for symmetrical airfoils from what I
> understand. Apparently it never changes.
>
>
> > The center of lift of any airfoil,
At 01:27 PM 11/7/2005, you wrote:
>I would like to see that reference, I would be
>surprised if the center of lift didn't move some with
>changes in AoA.
These last few posts have mixed a number of different aero terms.
The 1/4 chord location is located 0.25 times the chord back from the
leading
Thank you Don, very nice post.
--- Donald Reid wrote:
> At 01:27 PM 11/7/2005, you wrote:
> >I would like to see that reference, I would be
> >surprised if the center of lift didn't move some
> with
> >changes in AoA.
>
> These last few posts have mixed a number of
> different aero terms.
>
>
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