Displacement during snap rolls (was Why is it so quiet?)

[Amram Privat]

Hello John
Can you be so kind and explain me what do you mean: in the setup
Thanks
Amram Leshed
Israel



  ----- Original Message ----- 
  From: John Ferrell 
  To: discussion at nsrca.org 
  Sent: Wednesday, December 29, 2004 4:19 PM
  Subject: Re: Displacement during snap rolls (was Why is it so quiet?)


  As near as I can tell Somenzini's secret is in the setup, not the snap itself. 
  The only place I see to downgrade for offset is in presentation.

  I admit to being one of his fans.

  I think the question is a very good one!

  John Ferrell    
  http://DixieNC.US

    ----- Original Message ----- 
    From: Bob Pastorello 
    To: discussion at nsrca.org 
    Sent: Wednesday, December 29, 2004 6:47 AM
    Subject: Re: Displacement during snap rolls (was Why is it so quiet?)


    Good points, David, but my question is based on a LATERAL, and "Parallel" shift in the track.  Assume that I get 'lucky', and nail the line before the snap, definitively BREAK during the snap, nail the exit on the original heading/track, but shifted sideward maybe 3 feet.
        My experience is that a properly-executed snap manuever - anyplace - MUST translate some forward momentum into angular sideward momentum, thus shifting the track of the manuever.
        If this is a "downgrade", where is the criteria, how much are the downgrades, and since we're not talking about an "angular" offset, the point per 10 or 15 degree deviation rule doesn't seem to fit.
        In fact, I would argue (and I'm confident there are aerodynamicists out here who could calculate and prove it so) that NO appropriately-executed snap manuever CAN occur without offset of the original track.

        If someone does the imitation/fake "snap roll" ( the rapid, low-rudder, high-aileron, semi-stall ROLL) there ISN'T an offset, usually.  At least in the fake ones I judged LAST season.

    Bob Pastorello
    NSRCA 199  AMA 46373
    rcaerobob at cox.net
    www.rcaerobats.net
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