[NSRCA-discussion] SNAPS ! AGAIN !

[John Fuqua]

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.    

 

 

 

 

 

 

 

 

 

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