Snap rolls (long)

[wgalligan]

On the rudder correction after the snap... if it is neccessary to rudder correct after the snap to keep the proper heading is this not just an attitude of the airplane and is the attitude of the airplane NOT downgraded rather a downgrade for a missed heading.  

Wayne G.

  ----- Original Message ----- 
  From: Dean Pappas 
  To: discussion at nsrca.org 
  Sent: Tuesday, June 24, 2003 2:03 PM
  Subject: RE: Snap rolls (long)


  Try this on Eric,
  The loss of exit heading would a downgrade.
  The fact that the plane is yawed in the snap is not. (its necessary!)
  Either the plane stabilizes instantaneously by iteslf, or the pilot helps it lock back onto the original track, seamlessly.
  OPINION ALERT!
  I think that the skillful correction is not a downgrade. It has to look seamless, though.
  If the snap obviously stops and then (after a discernable pause) a goodly whack of rudder is applied, then that is a downgrade.
  Regards,
      Dean Pappas
    -----Original Message-----
    From: Henderson,Eric [mailto:Eric.Henderson at gartner.com]
    Sent: Tuesday, June 24, 2003 2:57 PM
    To: discussion at nsrca.org
    Subject: RE: Snap rolls (long)


     Although it is important to focus on the entry of a snap, a zero is more often earned on the exit of a snap. A single snap is hard to roll out of, but a snap and a half often results in a roll on the last half roll. 

    The snap will often slow down towards the end making the snap look like it is rolling out a little. Try not to misjudge that occurrence. Do look for axially on the last 200 degrees. If it is a roll, give it a goose egg. If you are not sure it is roll then score it..You don't have time to analyze the thing...

    I have shown snap rolls to pilots on my TV and they said, "That was not a snap", and then I ran the same snap in slo-mo, and it was clearly a perfect snap. This thing is hard to judge. A lot goes on in a second or less. Whatever you do, don't blink. I'm serious. You will miss the moment.

    One thing that I am not so sure about is the pilot who can kick in some rudder that straightens the snap out just as it stops. Downgrade or not??

    Eric.
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