Re: [Jsbsim-devel] Aitfoils at high alpha

[Jon S B. <js...@ha...>]

On Wed, 21 Jul 2004 18:03:02 -0500
  "Ron Freimuth" <ron...@at...> wrote:
>
>     I think the shape of the CL curve is important in modeling spins 
> (also
>Cm vs alpha).  I suspect CL  gets stuck a bit past the bottom of the 
>dip at
>20 degs in a stall/spin.  Something has to keep Alpha relatively 
>constant
>since a spin tends to stay in a constant state.

Ron:

Given what you know about simulation, let me state these questions to 
you (and anyone else that wants to answer):

1) What do you think is the value of providing some modeling of high 
alpha lift/drag characteristics - even if the data is sort of generic, 
providing perhaps (at best) only "plausible" dynamics?

2) Do you have any insight or suggestions about modeling high alpha 
lift/drag characteristics, given the use of the JSBSim coefficient 
buildup method?

Jon