Bruce
My answer wasn't completely a joke. I've actually seen very little difference in performance for a nice straight wing compared to one that is wavy. Aki said that his Cat II glider of a few years ago had waves in the trailing edge but it still did something like 55 seconds. Some of the waves in the flaps will go away when you bend in camber. After that there are 2 main challenges:
1. How to get both wing panels in the same warp configuration and the more frustrating one -
2. Figuring out what is the correct warp configuration.
I generally wind up putting more and more camber in as a contest day progresses but I'm not convinced that this is the best approach. Also, where do you want the camber high point? When you're getting down into the Re=6 to 10k range the Kroo airfoils or the NACA 4702 start looking very good theoretically. Both of these have very rearward high points - the NACA 4702 being at 70% chord and the Kroo R6 being at around 80%. Both would probably be disastrous on a rigid wing but on a flapper they aren't that bad to deal with.
Bill Gowen
Decatur, GA USA
----- Original Message -----
From: Bruce McCrory
To: Indoor_Construction_at_yahoogroups.com
Sent: Sunday, December 18, 2005 10:00 AM
Subject: [Indoor_Construction] Re: Exclusive club
Bill,
In general, I feel pretty isolated with any interest I have. Then,
spontaneous generation comes out of the woodwork. [One of my mixed
cliche's.]
I attack new projects on a micro level. The process adds time to
agonizingly slow building, but I'm usually pretty satisfied with the
results, once completed. Gliders are not a first love, but they
certainly are complex. They are more complex than most non-glider
people think.
Bruce in Seattle
--- In Indoor_Construction_at_yahoogroups.com, "Bill Gowen"
<wdgowen_at_e...> wrote:
>
> Bruce, I think you have joined one of the smallest splinter groups
in indoor flying - low ceiling gliders. As far as I know the
membership is you, Kurt, Jerry, Chris and me!
> Bill Gowen
> Decatur, GA USA
> Bruce in Seattle
>
> (Almost close with one Cat. 1 and one Cat. 2, if the waves
would go
> away.)
>
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Received on Sun Dec 18 2005 - 07:34:42 CET
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:44 CET