[NSRCA-discussion] SNAPS ! AGAIN !

[Ron Van Putte]

Oh my!  I hope John realizes what he's stepped in here.

Ron

On Feb 27, 2010, at 9:36 AM, John Fuqua wrote:

> A full scale friend lent me a book by Alan Cassidy entitled “Better  
> Aerobatics” which had a formula for determining how many Gs to pull  
> to enter a snap.    It is very enlightening.
>
>
>
> Formula is  =  Recommended entry speed to enter snap divided by the  
> Power ON stall speed  - Squared.
>
>
>
> His example (Pits S2A) was  105/55 =1.909  (1.909)2  =3.64 Gs.     
> This means you would try to have an  instantaneous 3.64 G loading  
> if entering the “flick roll” at 105 mph.
>
>
>
> What I find fascinating about the formula is the “power on stall”  
> part of the formula.   Now translate that into our models which  
> have NO power ON stall speed.   I think this means that  
> mathematically we cannot do a snap.   Or the instantaneous Gs  
> required are impossible to obtain.
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> _______________________________________________
> NSRCA-discussion mailing list
> NSRCA-discussion at lists.nsrca.org
> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion