[NSRCA-discussion] SNAPS ! AGAIN !

[Ken Thompson]

That's right...carry a little speed, BAM!!  Perfect snap every time!!....wait a minute...which way do I move the sticks again???
<g>
  ----- Original Message ----- 
  From: Richard Strickland 
  To: NSRCA 
  Sent: Saturday, February 27, 2010 10:43 AM
  Subject: Re: [NSRCA-discussion] SNAPS ! AGAIN !


  Does this mean we can actually go back and do nice looking, fast snaps like God intended?
  RS
   

------------------------------------------------------------------------------
  Date: Sat, 27 Feb 2010 20:22:06 +0400
  From: khoard at gmail.com
  To: nsrca-discussion at lists.nsrca.org
  Subject: Re: [NSRCA-discussion] SNAPS ! AGAIN !

  Why would you let something as trivial as mathematics (or physics) get in your way?


  On Sat, Feb 27, 2010 at 8:21 PM, Ron Van Putte <vanputte at cox.net> wrote:

    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.



















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  -- 

  Keith Hoard
  Collierville, TN
  khoard at gmail.com




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