Spiroid Winglets...

[sisu1a]

Anyone know any more about them than this article does: http://tinyurl.com/yc4dnjr

-Paul

[Andy[_1_]]

On Mar 9, 9:54*pm, sisu1a > wrote:
> Anyone know any more about them than this article does:http://tinyurl.com/yc4dnjr
>
> -Paul

Never seen one before but it looks like a mini version of the joined
wing concept.

Andy (GY)

[Albert G]

On Mar 9, 11:54*pm, sisu1a > wrote:
> Anyone know any more about them than this article does:http://tinyurl.com/yc4dnjr
>
> -Paul

I have long maintained that the function of winglets is to provide a
convenient handle for the wing runner. This new version seems to
offer a considerable improvement in grip for that purpose.

Al

[kd6veb]

Hi Gang
I know it looks like a joke but before the "Ha Ha" go and google
search "Spiroids". There are quite a large number of references there
and in particular check out the URL below. Winglets are being used on
virtually all the new large commercial aircraft. Why? Probably not for
decoration. Then what? Maybe an increase in performance (HA Ha)?
Aren't there supposed to be wingtip vortices that reduce the
efficiency of wings? Isn't the reason for high aspect wings to reduce
the OVERALL effects of wingtip vortices? Did any of you know Mother
Nature has for millions of years figured out the problems with wing
tip vortices and came up with 2 solutions. For large land based
raptors She came up with low aspect ratio wings with multiple winglets
(feathers) at the wing tips These feathers do not overlap one another.
For the large oceanic birds who very rarely land on terra firma She
selected high aspect ratio wings. Why? High aspect wings are more
likely to be broken by a screwed up landing on land than on water.
Now spiroids would be really tough for Mother Nature to duplicate
for birds. This is analogous to the wheel in nature. There are almost
no examples of where Mother Nature uses wheels. However we could
barely exist without the wheel. There are reasons for this. I will let
you go figure out why!
So I am going to make a prediction. With the huge increases in
computer power becoming available and the ever more high cost of fuels
there is a major effort in the aircraft industry to improve aircraft
efficiencies. This will result in a review of wing losses. One of the
largest wing losses is caused by wing tip vortices. So guess what? We
may see some creative innovations appearing (Ha Ha).
Dave
http://www.flightglobal.com/blogs/flightblogger/2008/06/spiroid-wingtip-technology-the.html

On Mar 9, 11:54 pm, sisu1a > wrote:

> Anyone know any more about them than this article does:http://tinyurl.com/yc4dnjr

> -Paul

I have long maintained that the function of winglets is to provide a
convenient handle for the wing runner. This new version seems to
offer a considerable improvement in grip for that purpose.

Al