Re: 4 winged dino NOVA

[Dann Pigdon <dannj@alphalink.com.au>]

Tim Williams writes: 

> Jim Cunningham wrote: 
>
> > Also, folks seem to overlook the substantial contribution of a set of fixed 
> > trailing airfoils to increasing the thrust coefficient of the flapping wings 
> > in front of them.  The hindlimbs may have developed to enhance flapping 
> > flight rather than gliding flight.  For that purpose, there is no particular 
> > requirement for a splayed horizontal positioning of the posterior airfoils.
>  
>
> How does this accord with Chatterjee and Templin's biplane model of phugoid gliding?  Does the same principal hold for your flapping-flight scenario? 
>
>
> Chatterjee, S. & Templin, R. J. (2007). Biplane wing planform and flight performance of the feathered dinosaur _Microraptor gui_.  PNAS 104: 1576â1580.

Available free online:
http://www.pnas.org/cgi/reprint/0609975104v1.pdf 

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Dann Pigdon
GIS / Archaeologist              http://geo_cities.com/dannsdinosaurs
Melbourne, Australia             http://heretichides.soffiles.com
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