Re: Bat Flapping

[jrc <jrccea@bellsouth.net>]

All wings with sharp leading edges flying at a non-zero angle of attack do 
this.  It is particularly useful for membrane wings because it helps keep 
the pressure jump between the upper and lower surfaces established.
JimC

----- Original Message ----- 
From: "Richard W. Travsky" <rtravsky@uwyo.edu>
To: <dinosaur@usc.edu>
Sent: Monday, March 03, 2008 9:54 AM
Subject: Bat Flapping


> http://www.nature.com/news/2008/080228/full/news.2008.633.html
>
> the sharp edge at the front of their wings cuts through the air in such a 
> way as to create a vortex on top of the wing,