Very low Reynolds number airfoil

[speedy573]

For special purpose i am looking for an airfoil section for use in a winglet.
The design Reynolds number is around 10000.

Any ideas?

Mike

[Ollie]

Use airfoils near zero thickness. For airfoils meant for flying inverted, pick zero camber. For duration use 3 to 4% camber. Use a Logarithmic Spiral curve.

[speedy573]

Thank you Ollie!

Have a hint where to get more information about this subject?

Mike

[Ollie]

Ask an hummingbird or dragonfly. They have lots of experience. ;)
http://www.eurekalert.org/pub_releases/2005-06/nsf-ucc062205.php
http://www.ftexploring.com/askdrg/askdrgalapagos.html

No good data from wind tunnel. I don't have any data from a good computer program.

It helps if you can use wing loading next to zero and power source next to zero, assuming no flapping. It helps if you don't sneeze and don't destroy the microfilm model. IMO
http://www.indoorduration.com/BuildingF1D.htm
http://groups.yahoo.com/group/indoor/message/1188?viscount=100

A Logarithmic Spiral curve just looks nice. ;)

[speedy573]

lol!!!

Thanks a lot

Mike