How about a new subject, or perhaps an old one revisited. I have always
felt 81JM is span limited (though she sure fits into a crowded hanger
nicely). Has anyone put winglets on a KR? Did it improve efficiency or low
speed performance? Do they have to be "just right" or will flat plates
help?
How
be in the
flying characteristics that you were looking for!)
M.
From: KRnet on behalf of Gary Sack via KRnet
Sent: Tuesday, November 22, 2022 11:32 PM
To: KRnet
Cc: Gary Sack
Subject: KRnet> Winglets
How about a new subject, or perhaps an old one revisite
- as if you put a big ole
> honking wingtip, you SHOULD expect changes! (but they might not be in the
> flying characteristics that you were looking for!)
>
> M.
> From: KRnet on behalf of Gary Sack via KRnet
>
> Sent: Tuesday, November 22, 2022 11:32 PM
> To: KRnet
>
On 11/23/2022 12:31 PM, larry howell via KRnet wrote:
Our Dallas EAA chapter had a NASA engineer visit our chapter with
videos, photos etc many years ago. He said most of the drag on an air
cooled airplane is engine cooling and that a tapered wing gained you
nothing until well over 200mph
Proba
That should read "Hoerner" wing tip.
Larry Flesner
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Met-Co-Aire says that its Hoerner wingtips "will add to the performance
of your aircraft." They say the Hoerner tips will increase aircraft
range by 1 to 2 percent, increase the rate of climb by 60 fpm, boost
cruising speed by 3 to 5 mph, cut takeoff distance by 15 to 20 percent,
reduce sta
Hi all,
I made my wintips with a 45 Degree instead the 90 degree tip. A bit like
hoerner tip. I bit from both sides, i like a bit of a winglet and the hoerner
tips together. With our speeds I think it is not that importand…but what do you
like? Is a big winglte easy to store? So we made our ow
---Hi Larry. On my KR, I made tips, on my home made
foam and glass wings, like the Diehl, and with the plans called for 3
Degrees washout. In doing stalls and testing, The plane would shudder
and shake, and almost slap you in the face, to let you know it was
about to stall
Thanks to all for your responses. I am awed by the quality of Stef's
workmanship. Guess I will stick with my existing Hoerner tips as it appears
I won't do much better.
On Thu, Nov 24, 2022, 9:59 AM Stef den Boer via KRnet
wrote:
> Hi all,
> I made my wintips with a 45 Degree instead the 90 deg
aerodynamics - Why is it rare for small aircraft to have winglets ...
I thought I might clarify the process I used to build Hoerner tips and
correct one misstatement I made if anyone considers building them for
simplicity.
I started by sanding the top surface of the wing with the foam exten
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