some things i have noticed about lutz and treger planes:
both fly flat with not much "hanging on the prop"
both fly rather large circles
both have small amount of incidence in the stab, and even less in the wing
both fly at a low launch torque
Ivan has a very slow RPM and his plane climbs still at a low RPM when other
planes would be descending.
Also worth mentioning is that the elliptical wing has only 85% of the max
wing area allowed
the rest is still magic....
On Sat, Aug 11, 2012 at 10:39 PM, Yuan Kang Lee <ykleetx_at_gmail.com> wrote:
> **
>
>
>
> Video of Lutz Schramm 39:10 Flight
>
> Thanks to Stefan Pavelka. First 2:40 of video is Schramm processing his
> model. Note elliptical wing planform. Note huge stab. Note very little
> vertical separation between wing and stab. What does Lutz know that we
> don't?
>
> http://nffsblog.wordpress.com/2012/08/11/video-of-lutz-schramm-3910-flight/
>
>
> --- In Indoor_Construction_at_yahoogroups.com, Benjamin Saks <bensaks_at_...>
> wrote:
> >
> > lutz schramm just did a 39:10
> >
> > more to come later
> >
> > On Sat, Aug 11, 2012 at 4:51 PM, Jake Palmer <82.jake_at_...> wrote:
> >
> > > **
>
> > >
> > >
> > > The fact that he hasn't had these problems before is why I think
> something
> > > is wrong with the prop. Perhaps the joint where the the top hat is
> glued
> > > into the yoke has come loose and it's allowing the prop to flex side to
> > > side more than normal.
> > >
> > >
> > > On Sat, Aug 11, 2012 at 7:44 AM, Mark F1diddler <f1diddler_at_...>wrote:
> > >
> > >> **
>
> > >>
> > >>
> > >>
> > >>
> > >> --- In Indoor_Construction_at_yahoogroups.com, Jake Palmer <82.jake_at_>
> > >> wrote:
> > >> >
> > >> > Twice might have been coincidence, but 3 times means something must
> be
> > >> > wrong with his prop.>>
> > >>
> > >> Or fat blade prop merely needs another 1/4" or so away from the wing.
> > >> Still doesn't explain why this didn't show up before. I'm sure we'll
> hear.
> > >>
> > >>
> > >
> > >
> >
> >
> >
> > --
> > BEN SAKS
> > http://kck.st/KKfQsg
> > www.bensaks.com
> >
>
>
>
--
BEN SAKS
http://kck.st/KKfQsg
www.bensaks.com
Received on Sat Aug 11 2012 - 13:52:38 CEST