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Re: Science feather strength debate



On Tue, Nov 16th, 2010 at 2:45 AM, Mike Habib<habib@jhmi.edu>  wrote:

It is also worth noting that the inboard wing is more involved in weight 
support of the animal,
while the outboard wing is more involved in the production of the thrust 
component of lift (note
that in flying animals thrust is just a forward component of the lift, which is 
itself just the
component of fluid force perpendicular to flow).

Without a complete wing inboard, there is a significant loss of weight support, 
as a result.
There is also a substantial increase in induced drag, as the inboard wing then 
represents a
second, broad, "wingtip" around which a downwash can form.  This further 
changes the flow on
the
wing because it tends to shut down spanwise flow, which then weakens certain 
forms of vortex
stabilization on the wing.

On 11/15/2010 4:23 PM, Dann Pigdon wrote:

If the tail was also generating lift, could it have partially compensated for a 
lack of tertials?

And further, could the inboard wing gaps have actually created 'energetic air' the tail could harvest?